tpierron@b2b2c.ca (2004-09-14 at 1610.13 -0400):

If no, I'm extremely motivated to write that plugin (or help people that are writing one). But, well, it could be fine if we can avoid redundant project.

None I know, I raised the topic some time ago.

Another suggestion about this lib: fake motion blur. That is one of the reason I checked it, wanted a quick way to get motion blur given a sequence of images (for example, a 3d rendering). One of that lib's capabilities is interpolating between two similar images. With that new group of images and via composition, you can get acceptable blurs in really few time (compared to 3d apps that do it by rendering again and again, I mean). I did a quick test, but only works with gray images (so RGB would mean separation, three passes and joining, if the lib has no method for RGB, the demo app did not).

From my POV, some kind of wrapper to write multiple plugins would be

indeed interesting (I can think of some tasks that could use it: noise cleaner, hole filler, motion blurer, texture maker, zoomer/scaler...).

Thanks in advance for any effort you do about cimg and gimp.

GSR

Thierry Pierron writes:
> That library has a very efficient algorithm for restoring > lossy-compression image format.

Hmm, do you maybe mean effective and not efficient?

The application of this that I would be most interested in is denoising. I tried the pde_TschumperleDeriche2D example program on the parrot image with some Gaussian noise added, and it is rather slow. It would probably take way too long to filter out noise from a realistical size (megapixels) digital camera image?

Also, the result has an eerie "artistic" or "oilpaintingish" look to it. But I am sure all denoising algorithms always have some artefacts.

But anyway, sure, it is very interesting. It wouldn't be hard at all to make a GIMP plug-in using the CImg library.

For those too lazy to try it our themselves, below are (links to) the original parrot image, with added noise, and after 170 iterations (whoch took 25 minutes on my aging 450 MHz P3, scale appropriately for modern machines).

http://www.iki.fi/tml/parrot_original.png http://www.iki.fi/tml/parrot_output_000000.png http://www.iki.fi/tml/parrot_output_000170.png

--tml