At 07:31 PM 5/22/2006, Rudi Verago [vlain] wrote:
Is there any way to detect if a pdf is color or black/white?
FIRST, you have to define what you mean by "color" and what you mean by "black & white"? For example, if I have an object described in RGB with the value [ 1 1 1 ] - is that color or black and white? What about CMYK [ 0 0 0 0.5 ]? Or Spot Black? etc. How about images or gradiants?
Remember that are there eleven(!!) different ways to represent colors in a PDF - and each object can use a different method. Then you have the specific value(s) in each colorspace. Then issues like smooth shadings, images, etc.
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