What kind of figure? I'll assume you're dealing with raster images. What kind of image format are you using? Do you mean *completely* black/white or *mostly* black/white?* Do you care about alpha channels (i.e. transparency)?

As a wild stab in the dark I'd suggest GD's getPixel() and rgb() methods.

*) and I note that greyscale images that are *mostly white* usually have *figures* that are mostly black.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Figure difference by Joost
in thread Figure difference by Devasundaram

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