| 1 | export type Color = [number, number, number];
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| 2 |
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| 3 | export function yuv2rgb(yuv: Color): Color {
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| 4 | const y = yuv[0],
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| 5 | u = yuv[1],
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| 6 | v = yuv[2];
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| 7 | let r, g, b;
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| 8 |
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| 9 | r = y * 1 + u * 0 + v * 1.13983;
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| 10 | g = y * 1 + u * -0.39465 + v * -0.5806;
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| 11 | b = y * 1 + u * 2.02311 + v * 0;
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| 12 |
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| 13 | r = Math.min(Math.max(0, r), 1);
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| 14 | g = Math.min(Math.max(0, g), 1);
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| 15 | b = Math.min(Math.max(0, b), 1);
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| 16 |
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| 17 | return [r * 255, g * 255, b * 255];
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| 18 | }
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| 19 |
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| 20 | export function rgb2yuv(rgb: Color): Color {
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| 21 | const r = rgb[0] / 255,
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| 22 | g = rgb[1] / 255,
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| 23 | b = rgb[2] / 255;
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| 24 |
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| 25 | const y = r * 0.299 + g * 0.587 + b * 0.114;
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| 26 | const u = r * -0.14713 + g * -0.28886 + b * 0.436;
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| 27 | const v = r * 0.615 + g * -0.51499 + b * -0.10001;
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| 28 |
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| 29 | return [y, u, v];
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| 30 | }
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