Re: [Gimp-developer] A GSoC Purpose: Improve the Performance of SIOX

[Gerald Friedland]

Hi,

Jenny, nice to meet you!

I agree with Sven that implementing the "Detail Refinement Brush" as
described on
the http://siox.org website would be something that could be done
immediately, i.e.
without performing extensive computer vision research and would
contribute significantly to the
improvement of the SIOX tool. Once it is done, there is still room for
research, e.g. how to
automate the detail refinement brush further and also HCI issues.

I am glad to respond to any questions by email and could be a mentor
as far as conceptual
questions (as opposed to GIMP code structure) are concerned.

Gerald

On Sat, Mar 14, 2009 at 5:05 AM, Sven Neumann  wrote:
> Hi,
>
> On Sat, 2009-03-14 at 19:41 +0800, Jenny wrote:
>
>> I didn't read the code of SIOX and GIMP yet, and be not sure if the
>> features in this page  has been
>> implemented in GIMP's current development version.
>
> The Detail Refinement Brush that is mentioned on this page has not been
> implemented yet.
>
>> And I'm still not
>> sure if Gerald want to be a mentor in this GSoC Season.
>
> I have forwarded your mail to him and asked him if he'd be interested to
> help us having a GSoC project on SIOX. Please give him some time to
> respond. He is probably quite busy in his new job at the International
> Computer Science Institute (ICSI) in Berkeley.
>
>
> Sven
>
>
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-- 
Dr. Gerald Friedland
International Computer Science Institute
1947 Center Street, Suite 600
CA-94704 Berkeley, USA
Office: +1/510/666-2987
Mobile: +1/510/529-6514
http://www.gerald-friedland.org
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Re: [Gimp-developer] A GSoC Purpose: Improve the Performance of SIOX

[Sven Neumann]

Hi,

On Sat, 2009-03-14 at 19:41 +0800, Jenny wrote:

> I didn't read the code of SIOX and GIMP yet, and be not sure if the
> features in this page  has been
> implemented in GIMP's current development version.

The Detail Refinement Brush that is mentioned on this page has not been
implemented yet.

> And I'm still not
> sure if Gerald want to be a mentor in this GSoC Season.

I have forwarded your mail to him and asked him if he'd be interested to
help us having a GSoC project on SIOX. Please give him some time to
respond. He is probably quite busy in his new job at the International
Computer Science Institute (ICSI) in Berkeley.


Sven


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Re: [Gimp-developer] A GSoC Purpose: Improve the Performance of SIOX

[Jenny]

Hi,

On Sat, Mar 14, 2009 at 6:50 PM, Sven Neumann  wrote:
>
> SIOX can by definition only extract things from a background if the
> foreground color is sufficiently different. After all that is how the
> algorithm decides what to separate. So what you suggest here sounds more
> like adding a different separation algorithm and not like improving
> SIOX. But of course I might just have misunderstood you.
>
> The SIOX tool has several areas where it is lacking. The most notable is
> that it does a binary separation. Either a pixel is foreground or it is
> background. This causes jaggy edges and makes it necessary to do manual
> post-processing on the selection. The SIOX team around Gerald has
> suggested several improvements that would help to improve this. Their
> papers describe a refinement brush that should be used on the selection
> boundary to improve the results. It would be nice if this could be added
> to the GIMP SIOX tool.


Thank you for your feedback. I have only read some papers about how
SIOX extract thing, and didn't sure the real lack point of SIOX. Your
suggestion is very helpful. :)

I didn't read the code of SIOX and GIMP yet, and be not sure if the
features in this page  has been
implemented in GIMP's current development version. If not, is it a
good a GSoC project of implementing these features? And I'm still not
sure if Gerald want to be a mentor in this GSoC Season.

BTW, I have idled on the IRC channel #gimp for days, where I'm glad if
anyone could give me suggestions, or just talk :)


Cheers,
Jenny
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Re: [Gimp-developer] A GSoC Purpose: Improve the Performance of SIOX

[Sven Neumann]

Hi,

On Sat, 2009-03-14 at 11:52 +0800, Jenny wrote:

> My name is Ding Jie, and Jenny is my English name. I'm a first-grade
> post-graduate student, major in Image Processing, and very interested
> in algorithms of this field.
> 
> Thanks for neo's suggestion, I found SIOX is very interesting. I have
> read some paper about SIOX written by Gerald, and feel SIOX have
> potential to improve.
> 
> Firstly, SIOX performs not good when dealing with gray images.
> Secondly, it isn't good at extracting things from a background whose
> color is similar to foreground. I'm wondering is it possible to use
> some new approaches side-by-side, and make the final output as the
> combination of all those approaches' output.

SIOX can by definition only extract things from a background if the
foreground color is sufficiently different. After all that is how the
algorithm decides what to separate. So what you suggest here sounds more
like adding a different separation algorithm and not like improving
SIOX. But of course I might just have misunderstood you.

The SIOX tool has several areas where it is lacking. The most notable is
that it does a binary separation. Either a pixel is foreground or it is
background. This causes jaggy edges and makes it necessary to do manual
post-processing on the selection. The SIOX team around Gerald has
suggested several improvements that would help to improve this. Their
papers describe a refinement brush that should be used on the selection
boundary to improve the results. It would be nice if this could be added
to the GIMP SIOX tool.


Sven


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