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How do I combine two monochrome images?

I need to write anaglyph images program . Let's say I have two monochrome images: red one and cyan one. How can I combine them into one to make an anaglyph image?

Please give me some advice. Thanks.

P / s: I am using C # program language.

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3 answers


If the images are RGB, use the Darken blend mode. If they are CMYK use Lighten blending mode.

To darken, take a smaller value (Math.Min ()) of each channel. For ease, take the top one (Math.Max ​​()).



//Darken pseudocode
for(int y=0;y<CompositionBitmap.Height;y++)
    for(int x=0;x<CompositionBitmap.Width;x++){
        CompositionBitmap[x,y].R=Math.Min(RedBitmap[x,y].R,CyanBitmap[x,y].R);
        CompositionBitmap[x,y].G=Math.Min(RedBitmap[x,y].G,CyanBitmap[x,y].G);
        CompositionBitmap[x,y].B=Math.Min(RedBitmap[x,y].B,CyanBitmap[x,y].B);
    }
}
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One approach is to use the ImageMagick composite utility to overlay images. This method requires no programming.



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maybe set them to 50% alpha then offset and copy them using drawing surface

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