green_dood

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Hi i have some question about manipulation of images.

The situation is that we have a plain bitmap image (bmp). We want to

1.-convert it to black & white (monochrome)
2.-Get instead of the common black & white image, a ... hmmm how can i call it "binarized" image , you know having a bidimentional array of 0's and 1's , so we can apply some personalized algorithms.

I have accomplished the first step with imagemagick (mogrify -monochrome file) but i would like to know if there is a program or recommended approach to convert each one of those black/white pixes into 0's and 1's


Sorry about my english, not native.

kotnik

Dood, bmp is pretty simple.

green_dood

Thanks!! I'm checking it out. Im telling what happens next.

kotnik

Ok, do tell.

green_dood

Ok, basically i need to find a way to access this RGBQUAD array in a monochrome bitmap and check the lower and higher parts of all the bytes... with this info I could decide to turn each byte into a pair of 0 or 1 right?

kotnik

Here's the php way to convert a picture to monochrome: http://www.captchakiller.com/php-convert-monochrome