Retinex PDE

This program transforms an image according to the PDE implementation of the Retinex theory.

Please select an image. It may be slightly resized for an efficient FFT.
Very large images will be downsized.
Retinex PDE will run with the threshold value t=4; you can run it again later with another value.

Only upload suitable images. See the copyright and other conditions for details.
The maximum allowed file size is 1024Kb. TIFF, JPEG, PNG, GIF, PNM (and other standard formats) are recognized.
We may re-use the uploaded files for further analysis.

You can also try these proposed images.