Jpegs are in my understanding, store rectangular sections of the image ( If I remember stored coefficients), so I guess you could do edge detection as the compressed data represents some sort of semblance to what is encoded, but GIF's are just LWZ encoded chunks. I don't see any way you could determine what's in it without decompressing.

-Lee

"To be civilized is to deny one's nature."

In reply to Re: Re: Re: GIF Image Processing by shotgunefx
in thread GIF Image Processing by gri6507

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