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

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

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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