[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

Dang. Right after I just downloaded and installed the jars... which I 
found here:

https://jai.dev.java.net/binary-builds.html#Release_builds

Will check out the geotools repository.

Chas.

Timothy Perrett wrote:
> 
> Charles,
> 
> One google finds me a repo here:
> 
> http://maven.geotools.fr/repository/
> 
> Add that to your pom.xml and away you go.
> 
> Tim
> 
> On 16/04/2009 22:54, "Charles F. Munat"  wrote:
> 
>> I'm down with that. I tried adding this to my pom:
>>
>> 
>>javax.media
>>jai_core
>>1.1.2_01
>> 
>>
>> But I got this:
>>
>> Failed to resolve artifact.
>>
>> Missing:
>> --
>> 1) javax.media:jai_core:jar:1.1.2_01
>>
>> Anyone know how to pull this in via Maven?
>>
>> Chas.
>>
>> Derek Chen-Becker wrote:
>>> If you use JAI there are three implementations: one is pure java code
>>> and will run anywhere. There are two more versions that use JNI to
>>> provide "optimized" versions of some of the ops. We found that using the
>>> native (MMX, I think) code under Linux and Windows was significantly
>>> slower (order of magnitude or more) than just using the impl without
>>> native libraries. I can dig up timing results if you want, but for
>>> something as simple as scaling I think it would be better to just use
>>> the pure java version.
>>>
>>> Derek
>>>
>>> On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat >> > wrote:
>>>
>>>
>>> What do you mean by "pure java implementation" vs. "optimized native
>>> code"?
>>>
>>> Chas.
>>>
>>> Derek Chen-Becker wrote:
 Yes, I take back my recommendation for it. I didn't realize just
>>> how bad
 it was, but here's a good article on it:


>>> 
>>> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstanc
>>> e.html
 JAI works well, but adds a dependency. One note on performance:
>>> We have
 found in our testing that the pure java impl of JAI actually
>>> outperforms
 the "optimized" native code by quite a bit for most common operations
 like scaling, transforms, crops, etc.

 Derek

 On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat >> 
 >> wrote:


 This is very helpful. I'm glad to hear that others are doing
>>> this. I
 read, however, that getScaledInstance is slow. Probably not a
>>> huge issue
 since uploaded images will be infrequent...

 Thanks for the help!

 Chas.

 Derek Chen-Becker wrote:
> Jai or just Java2D would work. I use JAI a lot at work
>>> (wrote a
> large-scale image rendering and compositing application),
>>> so if
 you run
> into issues there just ask.  JAI can be somewhat heavy if
>>> you have
> simple requirements, so you could also just use the
> Image.getScaledInstance method, which is far simpler. For
>>> example:
> import java.awt.{Image,Tookit}
>
> val imageData : Array[Byte] = ...
>
> val scaled =
>

>>> 
>>> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
> height, Image.SCALE_SMOOTH)
>
> The final param controls which algorithm to use for
>>> scaling, so
 you can
> use several as defined on the java.awt.Image class.
>
> Derek
>
> On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
 mailto:lypa...@gmail.com>
>>> >
> 
>>> 
> i used jai in the past, a quick google let me to
>

>>> 
>>> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-
>>> using-java-better-way.html
> On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
 mailto:jlcane...@gmail.com>
>>> >
> >>  >> > Imagemagick is said to be very efficient for image
>>> processing.
>> http://www.imagemagick.org/script/api.php#java
>>
>> If you develop with MacOSX, some people had some
>>> compile
 issues
> with JMagick
>> and have prefered a more direct solution using "exec" :
>>

>>> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>> Jean-Luc
>>
>>
>> 2009/4/16 Charles F. Munat >> 
 >
>>> 
>>> >> The Georgia Association of Editors? That's good to
>>> know.
>>> (Unfortunately, the app is already built an

[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

Yeah, I'm pretty sure it's not. Weirdly, it's listed, but when you drill 
down, there's no jar there. But it's not clear whether it's already 
available on the system. And finding the damn jar is provide (as always) 
to be nearly impossible. I'll post if I find it.

Chas.

Derek Chen-Becker wrote:
> I don't know that it's in maven. A lot of sun libraries aren't 
> distributable via Maven due to licensing.
> 
> Derek
> 
> On Thu, Apr 16, 2009 at 4:54 PM, Charles F. Munat  > wrote:
> 
> 
> I'm down with that. I tried adding this to my pom:
> 
> 
>   javax.media
>   jai_core
>   1.1.2_01
> 
> 
> But I got this:
> 
> Failed to resolve artifact.
> 
> Missing:
> --
> 1) javax.media:jai_core:jar:1.1.2_01
> 
> Anyone know how to pull this in via Maven?
> 
> Chas.
> 
> Derek Chen-Becker wrote:
>  > If you use JAI there are three implementations: one is pure java code
>  > and will run anywhere. There are two more versions that use JNI to
>  > provide "optimized" versions of some of the ops. We found that
> using the
>  > native (MMX, I think) code under Linux and Windows was significantly
>  > slower (order of magnitude or more) than just using the impl without
>  > native libraries. I can dig up timing results if you want, but for
>  > something as simple as scaling I think it would be better to just use
>  > the pure java version.
>  >
>  > Derek
>  >
>  > On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat  
>  > >> wrote:
>  >
>  >
>  > What do you mean by "pure java implementation" vs. "optimized
> native
>  > code"?
>  >
>  > Chas.
>  >
>  > Derek Chen-Becker wrote:
>  >  > Yes, I take back my recommendation for it. I didn't
> realize just
>  > how bad
>  >  > it was, but here's a good article on it:
>  >  >
>  >  >
>  >
> 
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
>  >  >
>  >  > JAI works well, but adds a dependency. One note on
> performance:
>  > We have
>  >  > found in our testing that the pure java impl of JAI actually
>  > outperforms
>  >  > the "optimized" native code by quite a bit for most common
> operations
>  >  > like scaling, transforms, crops, etc.
>  >  >
>  >  > Derek
>  >  >
>  >  > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat
> mailto:c...@munat.com>
>  > >
>  >  > 
>   >  >
>  >  >
>  >  > This is very helpful. I'm glad to hear that others are
> doing
>  > this. I
>  >  > read, however, that getScaledInstance is slow.
> Probably not a
>  > huge issue
>  >  > since uploaded images will be infrequent...
>  >  >
>  >  > Thanks for the help!
>  >  >
>  >  > Chas.
>  >  >
>  >  > Derek Chen-Becker wrote:
>  >  >  > Jai or just Java2D would work. I use JAI a lot at work
>  > (wrote a
>  >  >  > large-scale image rendering and compositing
> application),
>  > so if
>  >  > you run
>  >  >  > into issues there just ask.  JAI can be somewhat
> heavy if
>  > you have
>  >  >  > simple requirements, so you could also just use the
>  >  >  > Image.getScaledInstance method, which is far
> simpler. For
>  > example:
>  >  >  >
>  >  >  > import java.awt.{Image,Tookit}
>  >  >  >
>  >  >  > val imageData : Array[Byte] = ...
>  >  >  >
>  >  >  > val scaled =
>  >  >  >
>  >  >
>  >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
>  >  >  > height, Image.SCALE_SMOOTH)
>  >  >  >
>  >  >  > The final param controls which algorithm to use for
>  > scaling, so
>  >  > you can
>  >  >  > use several as defined on the java.awt.Image class.
>  >  >  >
>  >  >  > Derek
>  >  >  >
>  >  >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
>  >  > mailto:lypa...@gmail.com>
> >
>  > 
> >>
>  >  >  >

[Lift] Re: Resizing images

2009-04-16 Thread Timothy Perrett 


Charles,

One google finds me a repo here:

http://maven.geotools.fr/repository/

Add that to your pom.xml and away you go.

Tim

On 16/04/2009 22:54, "Charles F. Munat"  wrote:

> 
> I'm down with that. I tried adding this to my pom:
> 
> 
>javax.media
>jai_core
>1.1.2_01
> 
> 
> But I got this:
> 
> Failed to resolve artifact.
> 
> Missing:
> --
> 1) javax.media:jai_core:jar:1.1.2_01
> 
> Anyone know how to pull this in via Maven?
> 
> Chas.
> 
> Derek Chen-Becker wrote:
>> If you use JAI there are three implementations: one is pure java code
>> and will run anywhere. There are two more versions that use JNI to
>> provide "optimized" versions of some of the ops. We found that using the
>> native (MMX, I think) code under Linux and Windows was significantly
>> slower (order of magnitude or more) than just using the impl without
>> native libraries. I can dig up timing results if you want, but for
>> something as simple as scaling I think it would be better to just use
>> the pure java version.
>> 
>> Derek
>> 
>> On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat > > wrote:
>> 
>> 
>> What do you mean by "pure java implementation" vs. "optimized native
>> code"?
>> 
>> Chas.
>> 
>> Derek Chen-Becker wrote:
>>> Yes, I take back my recommendation for it. I didn't realize just
>> how bad
>>> it was, but here's a good article on it:
>>> 
>>> 
>> 
>> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstanc
>> e.html
>>> 
>>> JAI works well, but adds a dependency. One note on performance:
>> We have
>>> found in our testing that the pure java impl of JAI actually
>> outperforms
>>> the "optimized" native code by quite a bit for most common operations
>>> like scaling, transforms, crops, etc.
>>> 
>>> Derek
>>> 
>>> On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat > 
>>> >> wrote:
>>> 
>>> 
>>> This is very helpful. I'm glad to hear that others are doing
>> this. I
>>> read, however, that getScaledInstance is slow. Probably not a
>> huge issue
>>> since uploaded images will be infrequent...
>>> 
>>> Thanks for the help!
>>> 
>>> Chas.
>>> 
>>> Derek Chen-Becker wrote:
 Jai or just Java2D would work. I use JAI a lot at work
>> (wrote a
 large-scale image rendering and compositing application),
>> so if
>>> you run
 into issues there just ask.  JAI can be somewhat heavy if
>> you have
 simple requirements, so you could also just use the
 Image.getScaledInstance method, which is far simpler. For
>> example:
 
 import java.awt.{Image,Tookit}
 
 val imageData : Array[Byte] = ...
 
 val scaled =
 
>>>
>> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
 height, Image.SCALE_SMOOTH)
 
 The final param controls which algorithm to use for
>> scaling, so
>>> you can
 use several as defined on the java.awt.Image class.
 
 Derek
 
 On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
>>> mailto:lypa...@gmail.com>
>> >
 
>> >>
>> 
>> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-
>> using-java-better-way.html
 
 On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
>>> mailto:jlcane...@gmail.com>
>> >
 >  >  Imagemagick is said to be very efficient for image
>> processing.
> http://www.imagemagick.org/script/api.php#java
> 
> If you develop with MacOSX, some people had some
>> compile
>>> issues
 with JMagick
> and have prefered a more direct solution using "exec" :
> 
 
>>>
>> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> 
> Jean-Luc
> 
> 
> 2009/4/16 Charles F. Munat > 
>>> >
>> 
>> > 
>> The Georgia Association of Editors? That's good to
>> know.
>> 
>> (Unfortunately, the app is already built and
>> running on
>>> my own
 server
>> and I have no time to play with GAE right now. But I'm
>>> getting
 more and
>> more curious about it.)
>> 
>> It's funny. I would think that lots of people would be
>>> resizing
 uploaded
>> images in

[Lift] Re: Resizing images

2009-04-16 Thread Derek Chen-Becker 
I don't know that it's in maven. A lot of sun libraries aren't distributable
via Maven due to licensing.

Derek

On Thu, Apr 16, 2009 at 4:54 PM, Charles F. Munat  wrote:

>
> I'm down with that. I tried adding this to my pom:
>
> 
>   javax.media
>   jai_core
>   1.1.2_01
> 
>
> But I got this:
>
> Failed to resolve artifact.
>
> Missing:
> --
> 1) javax.media:jai_core:jar:1.1.2_01
>
> Anyone know how to pull this in via Maven?
>
> Chas.
>
> Derek Chen-Becker wrote:
> > If you use JAI there are three implementations: one is pure java code
> > and will run anywhere. There are two more versions that use JNI to
> > provide "optimized" versions of some of the ops. We found that using the
> > native (MMX, I think) code under Linux and Windows was significantly
> > slower (order of magnitude or more) than just using the impl without
> > native libraries. I can dig up timing results if you want, but for
> > something as simple as scaling I think it would be better to just use
> > the pure java version.
> >
> > Derek
> >
> > On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat  > > wrote:
> >
> >
> > What do you mean by "pure java implementation" vs. "optimized native
> > code"?
> >
> > Chas.
> >
> > Derek Chen-Becker wrote:
> >  > Yes, I take back my recommendation for it. I didn't realize just
> > how bad
> >  > it was, but here's a good article on it:
> >  >
> >  >
> >
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
> >  >
> >  > JAI works well, but adds a dependency. One note on performance:
> > We have
> >  > found in our testing that the pure java impl of JAI actually
> > outperforms
> >  > the "optimized" native code by quite a bit for most common
> operations
> >  > like scaling, transforms, crops, etc.
> >  >
> >  > Derek
> >  >
> >  > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  > 
> >  > >> wrote:
> >  >
> >  >
> >  > This is very helpful. I'm glad to hear that others are doing
> > this. I
> >  > read, however, that getScaledInstance is slow. Probably not a
> > huge issue
> >  > since uploaded images will be infrequent...
> >  >
> >  > Thanks for the help!
> >  >
> >  > Chas.
> >  >
> >  > Derek Chen-Becker wrote:
> >  >  > Jai or just Java2D would work. I use JAI a lot at work
> > (wrote a
> >  >  > large-scale image rendering and compositing application),
> > so if
> >  > you run
> >  >  > into issues there just ask.  JAI can be somewhat heavy if
> > you have
> >  >  > simple requirements, so you could also just use the
> >  >  > Image.getScaledInstance method, which is far simpler. For
> > example:
> >  >  >
> >  >  > import java.awt.{Image,Tookit}
> >  >  >
> >  >  > val imageData : Array[Byte] = ...
> >  >  >
> >  >  > val scaled =
> >  >  >
> >  >
> >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
> >  >  > height, Image.SCALE_SMOOTH)
> >  >  >
> >  >  > The final param controls which algorithm to use for
> > scaling, so
> >  > you can
> >  >  > use several as defined on the java.awt.Image class.
> >  >  >
> >  >  > Derek
> >  >  >
> >  >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
> >  > mailto:lypa...@gmail.com>
> > >
> >  >  > 
> >  >  >  >
> >  >  >
> >  >  > i used jai in the past, a quick google let me to
> >  >  >
> >  >
> >
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> >  >  >
> >  >  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
> >  > mailto:jlcane...@gmail.com>
> > >
> >  >  >  >   >  >  >  >  > Imagemagick is said to be very efficient for image
> > processing.
> >  >  >  > http://www.imagemagick.org/script/api.php#java
> >  >  >  >
> >  >  >  > If you develop with MacOSX, some people had some
> > compile
> >  > issues
> >  >  > with JMagick
> >  >  >  > and have prefered a more direct solution using
> "exec" :
> >  >  >  >
> >  >  >
> >  >
> >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> >

[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

I'm down with that. I tried adding this to my pom:


   javax.media
   jai_core
   1.1.2_01


But I got this:

Failed to resolve artifact.

Missing:
--
1) javax.media:jai_core:jar:1.1.2_01

Anyone know how to pull this in via Maven?

Chas.

Derek Chen-Becker wrote:
> If you use JAI there are three implementations: one is pure java code 
> and will run anywhere. There are two more versions that use JNI to 
> provide "optimized" versions of some of the ops. We found that using the 
> native (MMX, I think) code under Linux and Windows was significantly 
> slower (order of magnitude or more) than just using the impl without 
> native libraries. I can dig up timing results if you want, but for 
> something as simple as scaling I think it would be better to just use 
> the pure java version.
> 
> Derek
> 
> On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat  > wrote:
> 
> 
> What do you mean by "pure java implementation" vs. "optimized native
> code"?
> 
> Chas.
> 
> Derek Chen-Becker wrote:
>  > Yes, I take back my recommendation for it. I didn't realize just
> how bad
>  > it was, but here's a good article on it:
>  >
>  >
> 
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
>  >
>  > JAI works well, but adds a dependency. One note on performance:
> We have
>  > found in our testing that the pure java impl of JAI actually
> outperforms
>  > the "optimized" native code by quite a bit for most common operations
>  > like scaling, transforms, crops, etc.
>  >
>  > Derek
>  >
>  > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  
>  > >> wrote:
>  >
>  >
>  > This is very helpful. I'm glad to hear that others are doing
> this. I
>  > read, however, that getScaledInstance is slow. Probably not a
> huge issue
>  > since uploaded images will be infrequent...
>  >
>  > Thanks for the help!
>  >
>  > Chas.
>  >
>  > Derek Chen-Becker wrote:
>  >  > Jai or just Java2D would work. I use JAI a lot at work
> (wrote a
>  >  > large-scale image rendering and compositing application),
> so if
>  > you run
>  >  > into issues there just ask.  JAI can be somewhat heavy if
> you have
>  >  > simple requirements, so you could also just use the
>  >  > Image.getScaledInstance method, which is far simpler. For
> example:
>  >  >
>  >  > import java.awt.{Image,Tookit}
>  >  >
>  >  > val imageData : Array[Byte] = ...
>  >  >
>  >  > val scaled =
>  >  >
>  >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
>  >  > height, Image.SCALE_SMOOTH)
>  >  >
>  >  > The final param controls which algorithm to use for
> scaling, so
>  > you can
>  >  > use several as defined on the java.awt.Image class.
>  >  >
>  >  > Derek
>  >  >
>  >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
>  > mailto:lypa...@gmail.com>
> >
>  >  > 
>   >  >
>  >  >
>  >  > i used jai in the past, a quick google let me to
>  >  >
>  >
> 
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
>  >  >
>  >  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
>  > mailto:jlcane...@gmail.com>
> >
>  >  >      >  >  > Imagemagick is said to be very efficient for image
> processing.
>  >  >  > http://www.imagemagick.org/script/api.php#java
>  >  >  >
>  >  >  > If you develop with MacOSX, some people had some
> compile
>  > issues
>  >  > with JMagick
>  >  >  > and have prefered a more direct solution using "exec" :
>  >  >  >
>  >  >
>  >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>  >  >  >
>  >  >  > Jean-Luc
>  >  >  >
>  >  >  >
>  >  >  > 2009/4/16 Charles F. Munat  
>  > >
> 
>   >  >  >>
>  >  >  >> The

[Lift] Re: Resizing images

2009-04-16 Thread Derek Chen-Becker 
I hadn't thought of that, but that could be part of it. Also, it seemed like
JIT was doing a very good job of optimizing hotspots, and there appeared to
be a peformance hit for shuttling the data back and forth via JNI.

Derek

On Thu, Apr 16, 2009 at 3:48 PM, David Pollak  wrote:

>
>
> On Thu, Apr 16, 2009 at 1:08 PM, Charles F. Munat  wrote:
>
>>
>> What do you mean by "pure java implementation"
>
>
> My understanding is that the pure java stuff calls the local window system
> so it uses the graphics accelerator.
>
>
>> vs. "optimized native code"?
>>
>> Chas.
>>
>> Derek Chen-Becker wrote:
>> > Yes, I take back my recommendation for it. I didn't realize just how bad
>> > it was, but here's a good article on it:
>> >
>> >
>> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
>> >
>> > JAI works well, but adds a dependency. One note on performance: We have
>> > found in our testing that the pure java impl of JAI actually outperforms
>> > the "optimized" native code by quite a bit for most common operations
>> > like scaling, transforms, crops, etc.
>> >
>> > Derek
>> >
>> > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat > > > wrote:
>> >
>> >
>> > This is very helpful. I'm glad to hear that others are doing this. I
>> > read, however, that getScaledInstance is slow. Probably not a huge
>> issue
>> > since uploaded images will be infrequent...
>> >
>> > Thanks for the help!
>> >
>> > Chas.
>> >
>> > Derek Chen-Becker wrote:
>> >  > Jai or just Java2D would work. I use JAI a lot at work (wrote a
>> >  > large-scale image rendering and compositing application), so if
>> > you run
>> >  > into issues there just ask.  JAI can be somewhat heavy if you
>> have
>> >  > simple requirements, so you could also just use the
>> >  > Image.getScaledInstance method, which is far simpler. For
>> example:
>> >  >
>> >  > import java.awt.{Image,Tookit}
>> >  >
>> >  > val imageData : Array[Byte] = ...
>> >  >
>> >  > val scaled =
>> >  >
>> >
>> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
>> >  > height, Image.SCALE_SMOOTH)
>> >  >
>> >  > The final param controls which algorithm to use for scaling, so
>> > you can
>> >  > use several as defined on the java.awt.Image class.
>> >  >
>> >  > Derek
>> >  >
>> >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
>> > mailto:lypa...@gmail.com>
>> >  > >> wrote:
>> >  >
>> >  >
>> >  > i used jai in the past, a quick google let me to
>> >  >
>> >
>> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
>> >  >
>> >  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
>> > mailto:jlcane...@gmail.com>
>> >  > >>
>> wrote:
>> >  >  > Imagemagick is said to be very efficient for image
>> processing.
>> >  >  > http://www.imagemagick.org/script/api.php#java
>> >  >  >
>> >  >  > If you develop with MacOSX, some people had some compile
>> > issues
>> >  > with JMagick
>> >  >  > and have prefered a more direct solution using "exec" :
>> >  >  >
>> >  >
>> >
>> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>> >  >  >
>> >  >  > Jean-Luc
>> >  >  >
>> >  >  >
>> >  >  > 2009/4/16 Charles F. Munat > >   c...@munat.com>>>
>> >  >  >>
>> >  >  >> The Georgia Association of Editors? That's good to know.
>> >  >  >>
>> >  >  >> (Unfortunately, the app is already built and running on
>> > my own
>> >  > server
>> >  >  >> and I have no time to play with GAE right now. But I'm
>> > getting
>> >  > more and
>> >  >  >> more curious about it.)
>> >  >  >>
>> >  >  >> It's funny. I would think that lots of people would be
>> > resizing
>> >  > uploaded
>> >  >  >> images in Java, but I've asked this question before and
>> > got nothing.
>> >  >  >> Ruby/Rails folks do this sort of thing all the time with
>> > RMagick
>> >  > (and
>> >  >  >> half a dozen other tools). What the heck do Java
>> > developers do?
>> >  >  >>
>> >  >  >> Thanks, Viktor!
>> >  >  >>
>> >  >  >> Chas.
>> >  >  >>
>> >  >  >> Viktor Klang wrote:
>> >  >  >> >
>> >  >  >> >
>> >  >  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
>> >  > mailto:c...@munat.com>
>> > >
>> >  >  >> > 
>> >

[Lift] Re: Resizing images

2009-04-16 Thread David Pollak 
On Thu, Apr 16, 2009 at 1:08 PM, Charles F. Munat  wrote:

>
> What do you mean by "pure java implementation"


My understanding is that the pure java stuff calls the local window system
so it uses the graphics accelerator.


> vs. "optimized native code"?
>
> Chas.
>
> Derek Chen-Becker wrote:
> > Yes, I take back my recommendation for it. I didn't realize just how bad
> > it was, but here's a good article on it:
> >
> >
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
> >
> > JAI works well, but adds a dependency. One note on performance: We have
> > found in our testing that the pure java impl of JAI actually outperforms
> > the "optimized" native code by quite a bit for most common operations
> > like scaling, transforms, crops, etc.
> >
> > Derek
> >
> > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  > > wrote:
> >
> >
> > This is very helpful. I'm glad to hear that others are doing this. I
> > read, however, that getScaledInstance is slow. Probably not a huge
> issue
> > since uploaded images will be infrequent...
> >
> > Thanks for the help!
> >
> > Chas.
> >
> > Derek Chen-Becker wrote:
> >  > Jai or just Java2D would work. I use JAI a lot at work (wrote a
> >  > large-scale image rendering and compositing application), so if
> > you run
> >  > into issues there just ask.  JAI can be somewhat heavy if you have
> >  > simple requirements, so you could also just use the
> >  > Image.getScaledInstance method, which is far simpler. For example:
> >  >
> >  > import java.awt.{Image,Tookit}
> >  >
> >  > val imageData : Array[Byte] = ...
> >  >
> >  > val scaled =
> >  >
> >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
> >  > height, Image.SCALE_SMOOTH)
> >  >
> >  > The final param controls which algorithm to use for scaling, so
> > you can
> >  > use several as defined on the java.awt.Image class.
> >  >
> >  > Derek
> >  >
> >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
> > mailto:lypa...@gmail.com>
> >  > >> wrote:
> >  >
> >  >
> >  > i used jai in the past, a quick google let me to
> >  >
> >
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> >  >
> >  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
> > mailto:jlcane...@gmail.com>
> >  > >>
> wrote:
> >  >  > Imagemagick is said to be very efficient for image
> processing.
> >  >  > http://www.imagemagick.org/script/api.php#java
> >  >  >
> >  >  > If you develop with MacOSX, some people had some compile
> > issues
> >  > with JMagick
> >  >  > and have prefered a more direct solution using "exec" :
> >  >  >
> >  >
> >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> >  >  >
> >  >  > Jean-Luc
> >  >  >
> >  >  >
> >  >  > 2009/4/16 Charles F. Munat  >  >>
> >  >  >>
> >  >  >> The Georgia Association of Editors? That's good to know.
> >  >  >>
> >  >  >> (Unfortunately, the app is already built and running on
> > my own
> >  > server
> >  >  >> and I have no time to play with GAE right now. But I'm
> > getting
> >  > more and
> >  >  >> more curious about it.)
> >  >  >>
> >  >  >> It's funny. I would think that lots of people would be
> > resizing
> >  > uploaded
> >  >  >> images in Java, but I've asked this question before and
> > got nothing.
> >  >  >> Ruby/Rails folks do this sort of thing all the time with
> > RMagick
> >  > (and
> >  >  >> half a dozen other tools). What the heck do Java
> > developers do?
> >  >  >>
> >  >  >> Thanks, Viktor!
> >  >  >>
> >  >  >> Chas.
> >  >  >>
> >  >  >> Viktor Klang wrote:
> >  >  >> >
> >  >  >> >
> >  >  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
> >  > mailto:c...@munat.com>
> > >
> >  >  >> > 
> >  >  >  >> >
> >  >  >> >
> >  >  >> > Has anyone here done anything with Lift in which
> > uploaded
> >  > images are
> >  >  >> > resized (or otherwise manipulated) before saving?
> > If so,
> >  > how did you
> >  >  >> > do
> >  >  >> > it? Any recommendations for libraries?
> >  >  >> >
> >  >

[Lift] Re: Resizing images

2009-04-16 Thread Derek Chen-Becker 
If you use JAI there are three implementations: one is pure java code and
will run anywhere. There are two more versions that use JNI to provide
"optimized" versions of some of the ops. We found that using the native
(MMX, I think) code under Linux and Windows was significantly slower (order
of magnitude or more) than just using the impl without native libraries. I
can dig up timing results if you want, but for something as simple as
scaling I think it would be better to just use the pure java version.

Derek

On Thu, Apr 16, 2009 at 3:08 PM, Charles F. Munat  wrote:

>
> What do you mean by "pure java implementation" vs. "optimized native code"?
>
> Chas.
>
> Derek Chen-Becker wrote:
> > Yes, I take back my recommendation for it. I didn't realize just how bad
> > it was, but here's a good article on it:
> >
> >
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
> >
> > JAI works well, but adds a dependency. One note on performance: We have
> > found in our testing that the pure java impl of JAI actually outperforms
> > the "optimized" native code by quite a bit for most common operations
> > like scaling, transforms, crops, etc.
> >
> > Derek
> >
> > On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  > > wrote:
> >
> >
> > This is very helpful. I'm glad to hear that others are doing this. I
> > read, however, that getScaledInstance is slow. Probably not a huge
> issue
> > since uploaded images will be infrequent...
> >
> > Thanks for the help!
> >
> > Chas.
> >
> > Derek Chen-Becker wrote:
> >  > Jai or just Java2D would work. I use JAI a lot at work (wrote a
> >  > large-scale image rendering and compositing application), so if
> > you run
> >  > into issues there just ask.  JAI can be somewhat heavy if you have
> >  > simple requirements, so you could also just use the
> >  > Image.getScaledInstance method, which is far simpler. For example:
> >  >
> >  > import java.awt.{Image,Tookit}
> >  >
> >  > val imageData : Array[Byte] = ...
> >  >
> >  > val scaled =
> >  >
> >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
> >  > height, Image.SCALE_SMOOTH)
> >  >
> >  > The final param controls which algorithm to use for scaling, so
> > you can
> >  > use several as defined on the java.awt.Image class.
> >  >
> >  > Derek
> >  >
> >  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
> > mailto:lypa...@gmail.com>
> >  > >> wrote:
> >  >
> >  >
> >  > i used jai in the past, a quick google let me to
> >  >
> >
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> >  >
> >  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
> > mailto:jlcane...@gmail.com>
> >  > >>
> wrote:
> >  >  > Imagemagick is said to be very efficient for image
> processing.
> >  >  > http://www.imagemagick.org/script/api.php#java
> >  >  >
> >  >  > If you develop with MacOSX, some people had some compile
> > issues
> >  > with JMagick
> >  >  > and have prefered a more direct solution using "exec" :
> >  >  >
> >  >
> >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> >  >  >
> >  >  > Jean-Luc
> >  >  >
> >  >  >
> >  >  > 2009/4/16 Charles F. Munat  >  >>
> >  >  >>
> >  >  >> The Georgia Association of Editors? That's good to know.
> >  >  >>
> >  >  >> (Unfortunately, the app is already built and running on
> > my own
> >  > server
> >  >  >> and I have no time to play with GAE right now. But I'm
> > getting
> >  > more and
> >  >  >> more curious about it.)
> >  >  >>
> >  >  >> It's funny. I would think that lots of people would be
> > resizing
> >  > uploaded
> >  >  >> images in Java, but I've asked this question before and
> > got nothing.
> >  >  >> Ruby/Rails folks do this sort of thing all the time with
> > RMagick
> >  > (and
> >  >  >> half a dozen other tools). What the heck do Java
> > developers do?
> >  >  >>
> >  >  >> Thanks, Viktor!
> >  >  >>
> >  >  >> Chas.
> >  >  >>
> >  >  >> Viktor Klang wrote:
> >  >  >> >
> >  >  >> >
> >  >  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
> >  > mailto:c...@munat.com>
> > >
> >  >  >> > 
> >

[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

What do you mean by "pure java implementation" vs. "optimized native code"?

Chas.

Derek Chen-Becker wrote:
> Yes, I take back my recommendation for it. I didn't realize just how bad 
> it was, but here's a good article on it:
> 
> http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html
> 
> JAI works well, but adds a dependency. One note on performance: We have 
> found in our testing that the pure java impl of JAI actually outperforms 
> the "optimized" native code by quite a bit for most common operations 
> like scaling, transforms, crops, etc.
> 
> Derek
> 
> On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  > wrote:
> 
> 
> This is very helpful. I'm glad to hear that others are doing this. I
> read, however, that getScaledInstance is slow. Probably not a huge issue
> since uploaded images will be infrequent...
> 
> Thanks for the help!
> 
> Chas.
> 
> Derek Chen-Becker wrote:
>  > Jai or just Java2D would work. I use JAI a lot at work (wrote a
>  > large-scale image rendering and compositing application), so if
> you run
>  > into issues there just ask.  JAI can be somewhat heavy if you have
>  > simple requirements, so you could also just use the
>  > Image.getScaledInstance method, which is far simpler. For example:
>  >
>  > import java.awt.{Image,Tookit}
>  >
>  > val imageData : Array[Byte] = ...
>  >
>  > val scaled =
>  >
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
>  > height, Image.SCALE_SMOOTH)
>  >
>  > The final param controls which algorithm to use for scaling, so
> you can
>  > use several as defined on the java.awt.Image class.
>  >
>  > Derek
>  >
>  > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett
> mailto:lypa...@gmail.com>
>  > >> wrote:
>  >
>  >
>  > i used jai in the past, a quick google let me to
>  >
> 
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
>  >
>  > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc
> mailto:jlcane...@gmail.com>
>  > >> wrote:
>  >  > Imagemagick is said to be very efficient for image processing.
>  >  > http://www.imagemagick.org/script/api.php#java
>  >  >
>  >  > If you develop with MacOSX, some people had some compile
> issues
>  > with JMagick
>  >  > and have prefered a more direct solution using "exec" :
>  >  >
>  >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>  >  >
>  >  > Jean-Luc
>  >  >
>  >  >
>  >  > 2009/4/16 Charles F. Munat   >>
>  >  >>
>  >  >> The Georgia Association of Editors? That's good to know.
>  >  >>
>  >  >> (Unfortunately, the app is already built and running on
> my own
>  > server
>  >  >> and I have no time to play with GAE right now. But I'm
> getting
>  > more and
>  >  >> more curious about it.)
>  >  >>
>  >  >> It's funny. I would think that lots of people would be
> resizing
>  > uploaded
>  >  >> images in Java, but I've asked this question before and
> got nothing.
>  >  >> Ruby/Rails folks do this sort of thing all the time with
> RMagick
>  > (and
>  >  >> half a dozen other tools). What the heck do Java
> developers do?
>  >  >>
>  >  >> Thanks, Viktor!
>  >  >>
>  >  >> Chas.
>  >  >>
>  >  >> Viktor Klang wrote:
>  >  >> >
>  >  >> >
>  >  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
>  > mailto:c...@munat.com>
> >
>  >  >> > 
>   >  >> >
>  >  >> >
>  >  >> > Has anyone here done anything with Lift in which
> uploaded
>  > images are
>  >  >> > resized (or otherwise manipulated) before saving?
> If so,
>  > how did you
>  >  >> > do
>  >  >> > it? Any recommendations for libraries?
>  >  >> >
>  >  >> >
>  >  >> > GAE offers that kind of functionality.
>  >  >> >
>  >  >> >
>  >  >> >
>  >  >> >
>  >  >> > Thanks!
>  >  >> >
>  >  >> > Chas.
>  >  >> >
>  >  >> >
>  >  >> >
>  >  >> >
>  >  >> >
>  >  >> > --
>  >  >> > Viktor Klang
>  >  >> > Senior

[Lift] Re: Resizing images

2009-04-16 Thread Derek Chen-Becker 
Yes, I take back my recommendation for it. I didn't realize just how bad it
was, but here's a good article on it:

http://today.java.net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html

JAI works well, but adds a dependency. One note on performance: We have
found in our testing that the pure java impl of JAI actually outperforms the
"optimized" native code by quite a bit for most common operations like
scaling, transforms, crops, etc.

Derek

On Thu, Apr 16, 2009 at 1:43 PM, Charles F. Munat  wrote:

>
> This is very helpful. I'm glad to hear that others are doing this. I
> read, however, that getScaledInstance is slow. Probably not a huge issue
> since uploaded images will be infrequent...
>
> Thanks for the help!
>
> Chas.
>
> Derek Chen-Becker wrote:
> > Jai or just Java2D would work. I use JAI a lot at work (wrote a
> > large-scale image rendering and compositing application), so if you run
> > into issues there just ask.  JAI can be somewhat heavy if you have
> > simple requirements, so you could also just use the
> > Image.getScaledInstance method, which is far simpler. For example:
> >
> > import java.awt.{Image,Tookit}
> >
> > val imageData : Array[Byte] = ...
> >
> > val scaled =
> > Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
> > height, Image.SCALE_SMOOTH)
> >
> > The final param controls which algorithm to use for scaling, so you can
> > use several as defined on the java.awt.Image class.
> >
> > Derek
> >
> > On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett  > > wrote:
> >
> >
> > i used jai in the past, a quick google let me to
> >
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> >
> > On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc  > > wrote:
> >  > Imagemagick is said to be very efficient for image processing.
> >  > http://www.imagemagick.org/script/api.php#java
> >  >
> >  > If you develop with MacOSX, some people had some compile issues
> > with JMagick
> >  > and have prefered a more direct solution using "exec" :
> >  >
> >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> >  >
> >  > Jean-Luc
> >  >
> >  >
> >  > 2009/4/16 Charles F. Munat mailto:c...@munat.com
> >>
> >  >>
> >  >> The Georgia Association of Editors? That's good to know.
> >  >>
> >  >> (Unfortunately, the app is already built and running on my own
> > server
> >  >> and I have no time to play with GAE right now. But I'm getting
> > more and
> >  >> more curious about it.)
> >  >>
> >  >> It's funny. I would think that lots of people would be resizing
> > uploaded
> >  >> images in Java, but I've asked this question before and got
> nothing.
> >  >> Ruby/Rails folks do this sort of thing all the time with RMagick
> > (and
> >  >> half a dozen other tools). What the heck do Java developers do?
> >  >>
> >  >> Thanks, Viktor!
> >  >>
> >  >> Chas.
> >  >>
> >  >> Viktor Klang wrote:
> >  >> >
> >  >> >
> >  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
> > mailto:c...@munat.com>
> >  >> > >> wrote:
> >  >> >
> >  >> >
> >  >> > Has anyone here done anything with Lift in which uploaded
> > images are
> >  >> > resized (or otherwise manipulated) before saving? If so,
> > how did you
> >  >> > do
> >  >> > it? Any recommendations for libraries?
> >  >> >
> >  >> >
> >  >> > GAE offers that kind of functionality.
> >  >> >
> >  >> >
> >  >> >
> >  >> >
> >  >> > Thanks!
> >  >> >
> >  >> > Chas.
> >  >> >
> >  >> >
> >  >> >
> >  >> >
> >  >> >
> >  >> > --
> >  >> > Viktor Klang
> >  >> > Senior Systems Analyst
> >  >> >
> >  >> > >
> >  >>
> >  >>
> >  >
> >  >
> >  >
> >  > --
> >  > Jean-Luc Canela
> >  > jlcane...@gmail.com 
> >  >
> >  > >
> >  >
> >
> >
> >
> >
> > >
>
> >
>

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[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

This is very helpful. I'm glad to hear that others are doing this. I 
read, however, that getScaledInstance is slow. Probably not a huge issue 
since uploaded images will be infrequent...

Thanks for the help!

Chas.

Derek Chen-Becker wrote:
> Jai or just Java2D would work. I use JAI a lot at work (wrote a 
> large-scale image rendering and compositing application), so if you run 
> into issues there just ask.  JAI can be somewhat heavy if you have 
> simple requirements, so you could also just use the 
> Image.getScaledInstance method, which is far simpler. For example:
> 
> import java.awt.{Image,Tookit}
> 
> val imageData : Array[Byte] = ...
> 
> val scaled = 
> Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width, 
> height, Image.SCALE_SMOOTH)
> 
> The final param controls which algorithm to use for scaling, so you can 
> use several as defined on the java.awt.Image class.
> 
> Derek
> 
> On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett  > wrote:
> 
> 
> i used jai in the past, a quick google let me to
> 
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> 
> On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc  > wrote:
>  > Imagemagick is said to be very efficient for image processing.
>  > http://www.imagemagick.org/script/api.php#java
>  >
>  > If you develop with MacOSX, some people had some compile issues
> with JMagick
>  > and have prefered a more direct solution using "exec" :
>  >
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>  >
>  > Jean-Luc
>  >
>  >
>  > 2009/4/16 Charles F. Munat mailto:c...@munat.com>>
>  >>
>  >> The Georgia Association of Editors? That's good to know.
>  >>
>  >> (Unfortunately, the app is already built and running on my own
> server
>  >> and I have no time to play with GAE right now. But I'm getting
> more and
>  >> more curious about it.)
>  >>
>  >> It's funny. I would think that lots of people would be resizing
> uploaded
>  >> images in Java, but I've asked this question before and got nothing.
>  >> Ruby/Rails folks do this sort of thing all the time with RMagick
> (and
>  >> half a dozen other tools). What the heck do Java developers do?
>  >>
>  >> Thanks, Viktor!
>  >>
>  >> Chas.
>  >>
>  >> Viktor Klang wrote:
>  >> >
>  >> >
>  >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat
> mailto:c...@munat.com>
>  >> > >> wrote:
>  >> >
>  >> >
>  >> > Has anyone here done anything with Lift in which uploaded
> images are
>  >> > resized (or otherwise manipulated) before saving? If so,
> how did you
>  >> > do
>  >> > it? Any recommendations for libraries?
>  >> >
>  >> >
>  >> > GAE offers that kind of functionality.
>  >> >
>  >> >
>  >> >
>  >> >
>  >> > Thanks!
>  >> >
>  >> > Chas.
>  >> >
>  >> >
>  >> >
>  >> >
>  >> >
>  >> > --
>  >> > Viktor Klang
>  >> > Senior Systems Analyst
>  >> >
>  >> > >
>  >>
>  >>
>  >
>  >
>  >
>  > --
>  > Jean-Luc Canela
>  > jlcane...@gmail.com 
>  >
>  > >
>  >
> 
> 
> 
> 
> > 

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[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

Thanks! I tried JAI before but couldn't get it to work in Scala. I'm a 
much better Scala programmer now, though, so maybe I'll give it another 
look. Do you think it has any advantages of the other methods mentioned 
(imageio and jmagick)?

Have you actually made it work in Lift?

Chas.

Alexander Kellett wrote:
> i used jai in the past, a quick google let me to
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
> 
> On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc  wrote:
>> Imagemagick is said to be very efficient for image processing.
>> http://www.imagemagick.org/script/api.php#java
>>
>> If you develop with MacOSX, some people had some compile issues with JMagick
>> and have prefered a more direct solution using "exec" :
>> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>>
>> Jean-Luc
>>
>>
>> 2009/4/16 Charles F. Munat 
>>> The Georgia Association of Editors? That's good to know.
>>>
>>> (Unfortunately, the app is already built and running on my own server
>>> and I have no time to play with GAE right now. But I'm getting more and
>>> more curious about it.)
>>>
>>> It's funny. I would think that lots of people would be resizing uploaded
>>> images in Java, but I've asked this question before and got nothing.
>>> Ruby/Rails folks do this sort of thing all the time with RMagick (and
>>> half a dozen other tools). What the heck do Java developers do?
>>>
>>> Thanks, Viktor!
>>>
>>> Chas.
>>>
>>> Viktor Klang wrote:

 On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat >>> > wrote:


 Has anyone here done anything with Lift in which uploaded images are
 resized (or otherwise manipulated) before saving? If so, how did you
 do
 it? Any recommendations for libraries?


 GAE offers that kind of functionality.




 Thanks!

 Chas.





 --
 Viktor Klang
 Senior Systems Analyst

>>>
>>
>>
>> --
>> Jean-Luc Canela
>> jlcane...@gmail.com
>>
> 
> > 

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[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

I develop on a Mac, but deploy to Linux. I didn't know there was a 
JMagick. Thanks! I'll look into it.

Chas.

Jean-Luc wrote:
> Imagemagick is said to be very efficient for image processing.
> http://www.imagemagick.org/script/api.php#java
> 
> If you develop with MacOSX, some people had some compile issues with 
> JMagick and have prefered a more direct solution using "exec" : 
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> 
> Jean-Luc
> 
> 
> 2009/4/16 Charles F. Munat mailto:c...@munat.com>>
> 
> 
> The Georgia Association of Editors? That's good to know.
> 
> (Unfortunately, the app is already built and running on my own server
> and I have no time to play with GAE right now. But I'm getting more and
> more curious about it.)
> 
> It's funny. I would think that lots of people would be resizing uploaded
> images in Java, but I've asked this question before and got nothing.
> Ruby/Rails folks do this sort of thing all the time with RMagick (and
> half a dozen other tools). What the heck do Java developers do?
> 
> Thanks, Viktor!
> 
> Chas.
> 
> Viktor Klang wrote:
>  >
>  >
>  > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat  
>  > >> wrote:
>  >
>  >
>  > Has anyone here done anything with Lift in which uploaded
> images are
>  > resized (or otherwise manipulated) before saving? If so, how
> did you do
>  > it? Any recommendations for libraries?
>  >
>  >
>  > GAE offers that kind of functionality.
>  >
>  >
>  >
>  >
>  > Thanks!
>  >
>  > Chas.
>  >
>  >
>  >
>  >
>  >
>  > --
>  > Viktor Klang
>  > Senior Systems Analyst
>  >
>  > >
> 
> 
> 
> 
> 
> -- 
> Jean-Luc Canela
> jlcane...@gmail.com 
> 
> > 

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[Lift] Re: Resizing images

2009-04-16 Thread Derek Chen-Becker 
Jai or just Java2D would work. I use JAI a lot at work (wrote a large-scale
image rendering and compositing application), so if you run into issues
there just ask.  JAI can be somewhat heavy if you have simple requirements,
so you could also just use the Image.getScaledInstance method, which is far
simpler. For example:

import java.awt.{Image,Tookit}

val imageData : Array[Byte] = ...

val scaled =
Toolkit.getDefaultToolkit.createImage(imageData).getScaledUInstace(width,
height, Image.SCALE_SMOOTH)

The final param controls which algorithm to use for scaling, so you can use
several as defined on the java.awt.Image class.

Derek

On Thu, Apr 16, 2009 at 5:59 AM, Alexander Kellett wrote:

>
> i used jai in the past, a quick google let me to
>
> http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html
>
> On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc  wrote:
> > Imagemagick is said to be very efficient for image processing.
> > http://www.imagemagick.org/script/api.php#java
> >
> > If you develop with MacOSX, some people had some compile issues with
> JMagick
> > and have prefered a more direct solution using "exec" :
> > http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
> >
> > Jean-Luc
> >
> >
> > 2009/4/16 Charles F. Munat 
> >>
> >> The Georgia Association of Editors? That's good to know.
> >>
> >> (Unfortunately, the app is already built and running on my own server
> >> and I have no time to play with GAE right now. But I'm getting more and
> >> more curious about it.)
> >>
> >> It's funny. I would think that lots of people would be resizing uploaded
> >> images in Java, but I've asked this question before and got nothing.
> >> Ruby/Rails folks do this sort of thing all the time with RMagick (and
> >> half a dozen other tools). What the heck do Java developers do?
> >>
> >> Thanks, Viktor!
> >>
> >> Chas.
> >>
> >> Viktor Klang wrote:
> >> >
> >> >
> >> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat  >> > > wrote:
> >> >
> >> >
> >> > Has anyone here done anything with Lift in which uploaded images
> are
> >> > resized (or otherwise manipulated) before saving? If so, how did
> you
> >> > do
> >> > it? Any recommendations for libraries?
> >> >
> >> >
> >> > GAE offers that kind of functionality.
> >> >
> >> >
> >> >
> >> >
> >> > Thanks!
> >> >
> >> > Chas.
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> > Viktor Klang
> >> > Senior Systems Analyst
> >> >
> >> > >
> >>
> >>
> >
> >
> >
> > --
> > Jean-Luc Canela
> > jlcane...@gmail.com
> >
> > >
> >
>
> >
>

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[Lift] Re: Resizing images

2009-04-16 Thread Alexander Kellett 

i used jai in the past, a quick google let me to
http://www.digitalsanctuary.com/tech-blog/java/how-to-resize-uploaded-images-using-java-better-way.html

On Thu, Apr 16, 2009 at 11:10 AM, Jean-Luc  wrote:
> Imagemagick is said to be very efficient for image processing.
> http://www.imagemagick.org/script/api.php#java
>
> If you develop with MacOSX, some people had some compile issues with JMagick
> and have prefered a more direct solution using "exec" :
> http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/
>
> Jean-Luc
>
>
> 2009/4/16 Charles F. Munat 
>>
>> The Georgia Association of Editors? That's good to know.
>>
>> (Unfortunately, the app is already built and running on my own server
>> and I have no time to play with GAE right now. But I'm getting more and
>> more curious about it.)
>>
>> It's funny. I would think that lots of people would be resizing uploaded
>> images in Java, but I've asked this question before and got nothing.
>> Ruby/Rails folks do this sort of thing all the time with RMagick (and
>> half a dozen other tools). What the heck do Java developers do?
>>
>> Thanks, Viktor!
>>
>> Chas.
>>
>> Viktor Klang wrote:
>> >
>> >
>> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat > > > wrote:
>> >
>> >
>> >     Has anyone here done anything with Lift in which uploaded images are
>> >     resized (or otherwise manipulated) before saving? If so, how did you
>> > do
>> >     it? Any recommendations for libraries?
>> >
>> >
>> > GAE offers that kind of functionality.
>> >
>> >
>> >
>> >
>> >     Thanks!
>> >
>> >     Chas.
>> >
>> >
>> >
>> >
>> >
>> > --
>> > Viktor Klang
>> > Senior Systems Analyst
>> >
>> > >
>>
>>
>
>
>
> --
> Jean-Luc Canela
> jlcane...@gmail.com
>
> >
>

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[Lift] Re: Resizing images

2009-04-16 Thread Jean-Luc 
Imagemagick is said to be very efficient for image processing.
http://www.imagemagick.org/script/api.php#java

If you develop with MacOSX, some people had some compile issues with JMagick
and have prefered a more direct solution using "exec" :
http://www.darcynorman.net/2005/03/15/jai-vs-imagemagick-image-resizing/

Jean-Luc


2009/4/16 Charles F. Munat 

>
> The Georgia Association of Editors? That's good to know.
>
> (Unfortunately, the app is already built and running on my own server
> and I have no time to play with GAE right now. But I'm getting more and
> more curious about it.)
>
> It's funny. I would think that lots of people would be resizing uploaded
> images in Java, but I've asked this question before and got nothing.
> Ruby/Rails folks do this sort of thing all the time with RMagick (and
> half a dozen other tools). What the heck do Java developers do?
>
> Thanks, Viktor!
>
> Chas.
>
> Viktor Klang wrote:
> >
> >
> > On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat  > > wrote:
> >
> >
> > Has anyone here done anything with Lift in which uploaded images are
> > resized (or otherwise manipulated) before saving? If so, how did you
> do
> > it? Any recommendations for libraries?
> >
> >
> > GAE offers that kind of functionality.
> >
> >
> >
> >
> > Thanks!
> >
> > Chas.
> >
> >
> >
> >
> >
> > --
> > Viktor Klang
> > Senior Systems Analyst
> >
> > >
>
> >
>


-- 
Jean-Luc Canela
jlcane...@gmail.com

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[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat 

The Georgia Association of Editors? That's good to know.

(Unfortunately, the app is already built and running on my own server 
and I have no time to play with GAE right now. But I'm getting more and 
more curious about it.)

It's funny. I would think that lots of people would be resizing uploaded 
images in Java, but I've asked this question before and got nothing. 
Ruby/Rails folks do this sort of thing all the time with RMagick (and 
half a dozen other tools). What the heck do Java developers do?

Thanks, Viktor!

Chas.

Viktor Klang wrote:
> 
> 
> On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat  > wrote:
> 
> 
> Has anyone here done anything with Lift in which uploaded images are
> resized (or otherwise manipulated) before saving? If so, how did you do
> it? Any recommendations for libraries?
> 
> 
> GAE offers that kind of functionality.
>  
> 
> 
> 
> Thanks!
> 
> Chas.
> 
> 
> 
> 
> 
> -- 
> Viktor Klang
> Senior Systems Analyst
> 
> > 

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[Lift] Re: Resizing images

2009-04-16 Thread Viktor Klang 
On Thu, Apr 16, 2009 at 7:36 AM, Charles F. Munat  wrote:

>
> Has anyone here done anything with Lift in which uploaded images are
> resized (or otherwise manipulated) before saving? If so, how did you do
> it? Any recommendations for libraries?


GAE offers that kind of functionality.


>
>
> Thanks!
>
> Chas.
>
> >
>


-- 
Viktor Klang
Senior Systems Analyst

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