Question

I am able with an BufferedImage to obtain the RGB values for every pixel of a 640×640 image, the output looks like this:

[...]
Pixel :(640, 634) RGB: 166 94 82
Pixel :(640, 635) RGB: 166 94 80
Pixel :(640, 636) RGB: 163 91 77
Pixel :(640, 637) RGB: 157 88 73
Pixel :(640, 638) RGB: 157 88 73
Pixel :(640, 639) RGB: 159 90 74
Pixel :(640, 640) RGB: 158 89 73
This image has 69197 colors.

I need to classify each of the RGB colors obtained this way into 3-bit RGB (8 colors), I would need to have an idea on how to do this… How to know the range of RGB for each of the 8 colors of the 3-bit RGB. Thanks!

Answer 1

Your resulting image will have 1 bits for each color component.

For red for instance you should do this:

 red1Bit = redOriginal > 127 ? 1 : 0;

You should do the same for blue and green as well.