Image signature (saliency compute)

I add matlab files here. Zhonghua and Guilin, you can try this out and
see if saliency can be used for positive and negative points
generations.

Zhonghua, there is a image_signature_compute.txt file which contains the
exact computation. Only one line, check if you can transfer it to c
code. I am not sure your problem which platform you will use, octave? C?
or ...

Xing