Changing the alpha property on all whitespace in an image

Question

I have an image, that will have white pixels in and around other pixels, and i need all of the whitespace to be transparent. how would i process the image reasonably fast? (unsafe code perhaps? i dont know how to do that..)

score 0 · Answer 1 · answered Jan 17 '11 at 05:21

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A post in this thread shows you how to access the pixeldata

answered Jan 17 '11 at 05:21

Emond

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score 0 · Accepted Answer · edited May 23 '17 at 12:18

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Here is a link to similar question answered on Stackoverflow.

Making every pixel of an image having a specific color transparent

edited May 23 '17 at 12:18

Community

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answered Jan 17 '11 at 05:29

Shekhar_Pro

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Changing the alpha property on all whitespace in an image

2 Answers2