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more writing stuff

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Joseph Redmon
2015-09-22 17:34:48 -07:00
parent 2a1025b6f0
commit a9e16d914a
3 changed files with 16 additions and 0 deletions
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10
src/image.c
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@ -494,6 +494,16 @@ image grayscale_image(image im)
return gray;
}
image threshold_image(image im, float thresh)
{
int i;
image t = make_image(im.w, im.h, im.c);
for(i = 0; i < im.w*im.h*im.c; ++i){
t.data[i] = im.data[i]>0 ? 1 : 0;
}
return t;
}
image blend_image(image fore, image back, float alpha)
{
assert(fore.w == back.w && fore.h == back.h && fore.c == back.c);