Example
Given the following image of a cat (an original version and a version that has been reduced to 256 colors for easy histogram purposes), the following data represents a color histogram in the RGB color space, using four bins. Bin 0 corresponds to intensities 0-63, bin 1 is 64-127, bin 2 is 128-191, and bin 3 is 192-255.
Red | Green | Blue | Pixel Count |
---|---|---|---|
0 | 0 | 0 | 7414 |
0 | 0 | 1 | 230 |
0 | 0 | 2 | 0 |
0 | 0 | 3 | 0 |
0 | 1 | 0 | 8 |
0 | 1 | 1 | 372 |
0 | 1 | 2 | 88 |
0 | 1 | 3 | 0 |
0 | 2 | 0 | 0 |
0 | 2 | 1 | 0 |
0 | 2 | 2 | 10 |
0 | 2 | 3 | 1 |
0 | 3 | 0 | 0 |
0 | 3 | 1 | 0 |
0 | 3 | 2 | 0 |
0 | 3 | 3 | 0 |
1 | 0 | 0 | 891 |
1 | 0 | 1 | 13 |
1 | 0 | 2 | 0 |
1 | 0 | 3 | 0 |
1 | 1 | 0 | 592 |
1 | 1 | 1 | 3462 |
1 | 1 | 2 | 355 |
1 | 1 | 3 | 0 |
1 | 2 | 0 | 0 |
1 | 2 | 1 | 101 |
1 | 2 | 2 | 882 |
1 | 2 | 3 | 16 |
1 | 3 | 0 | 0 |
1 | 3 | 1 | 0 |
1 | 3 | 2 | 0 |
1 | 3 | 3 | 0 |
2 | 0 | 0 | 1146 |
2 | 0 | 1 | 0 |
2 | 0 | 2 | 0 |
2 | 0 | 3 | 0 |
2 | 1 | 0 | 2552 |
2 | 1 | 1 | 9040 |
2 | 1 | 2 | 47 |
2 | 1 | 3 | 0 |
2 | 2 | 0 | 0 |
2 | 2 | 1 | 8808 |
2 | 2 | 2 | 53110 |
2 | 2 | 3 | 11053 |
2 | 3 | 0 | 0 |
2 | 3 | 1 | 0 |
2 | 3 | 2 | 170 |
2 | 3 | 3 | 17533 |
3 | 0 | 0 | 11 |
3 | 0 | 1 | 0 |
3 | 0 | 2 | 0 |
3 | 0 | 3 | 0 |
3 | 1 | 0 | 856 |
3 | 1 | 1 | 1376 |
3 | 1 | 2 | 0 |
3 | 1 | 3 | 0 |
3 | 2 | 0 | 0 |
3 | 2 | 1 | 3650 |
3 | 2 | 2 | 6260 |
3 | 2 | 3 | 109 |
3 | 3 | 0 | 0 |
3 | 3 | 1 | 0 |
3 | 3 | 2 | 3415 |
3 | 3 | 3 | 53929 |
Read more about this topic: Color Histogram
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