[Lift] Re: Resizing images

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

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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 c...@munat.com 
 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
 
  

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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 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 c...@munat.com
  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 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 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 c...@munat.com
  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 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 lypa...@gmail.comwrote:


 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 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 c...@munat.com
   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 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 c...@munat.com
 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 group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to 
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[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 c...@munat.com 
 mailto:c...@munat.com 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
 lypa...@gmail.com mailto:lypa...@gmail.com
   mailto:lypa...@gmail.com 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
 jlcane...@gmail.com mailto:jlcane...@gmail.com
   mailto:jlcane...@gmail.com 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
 mailto:c...@munat.com mailto:c...@munat.com 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
   c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com mailto:c...@munat.com
  mailto:c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com 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 mailto:jlcane...@gmail.com
 mailto:jlcane...@gmail.com mailto:jlcane...@gmail.com

 


[Lift] Re: Resizing images

2009-04-16 Thread Charles F. Munat

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

dependency
   groupIdjavax.media/groupId
   artifactIdjai_core/artifactId
   version1.1.2_01/version
/dependency

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 c...@munat.com 
 mailto:c...@munat.com 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 c...@munat.com
 mailto:c...@munat.com
   mailto:c...@munat.com mailto:c...@munat.com 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
   lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com 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
   jlcane...@gmail.com mailto:jlcane...@gmail.com
 mailto:jlcane...@gmail.com mailto:jlcane...@gmail.com
 mailto:jlcane...@gmail.com
 mailto:jlcane...@gmail.com mailto:jlcane...@gmail.com
 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
 mailto:c...@munat.com
   mailto:c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com mailto:c...@munat.com
  
   The Georgia Association of Editors? That's good to
 know.
  
   (Unfortunately, the app is already built and
 running on
  

[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 c...@munat.com wrote:


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

 dependency
   groupIdjavax.media/groupId
   artifactIdjai_core/artifactId
   version1.1.2_01/version
 /dependency

 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 c...@munat.com
  mailto:c...@munat.com 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 c...@munat.com
  mailto:c...@munat.com
mailto:c...@munat.com mailto:c...@munat.com 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
lypa...@gmail.com mailto:lypa...@gmail.com
  mailto:lypa...@gmail.com mailto:lypa...@gmail.com
  mailto:lypa...@gmail.com mailto:lypa...@gmail.com
  mailto:lypa...@gmail.com 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
jlcane...@gmail.com mailto:jlcane...@gmail.com
  mailto:jlcane...@gmail.com mailto:jlcane...@gmail.com
  mailto:jlcane...@gmail.com
  mailto:jlcane...@gmail.com mailto:jlcane...@gmail.com
  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
  mailto:c...@munat.com
mailto:c...@munat.com mailto:c...@munat.com
  

[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 c...@munat.com 
 mailto:c...@munat.com wrote:
 
 
 I'm down with that. I tried adding this to my pom:
 
 dependency
   groupIdjavax.media/groupId
   artifactIdjai_core/artifactId
   version1.1.2_01/version
 /dependency
 
 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 c...@munat.com
 mailto:c...@munat.com
   mailto:c...@munat.com mailto:c...@munat.com 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
 c...@munat.com mailto:c...@munat.com
   mailto:c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com mailto:c...@munat.com
 mailto:c...@munat.com mailto:c...@munat.com 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
 lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com
   mailto:lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com
   mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com
   mailto:lypa...@gmail.com mailto:lypa...@gmail.com
 mailto:lypa...@gmail.com mailto:lypa...@gmail.com wrote: