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washeet.softurecs.com
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node_modules
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image-q
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conversion
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lab2xyz.ts
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/** * @preserve * Copyright 2015-2018 Igor Bezkrovnyi * All rights reserved. (MIT Licensed) * * lab2xyz.ts - part of Image Quantization Library */ const refX = 0.95047; // ref_X = 95.047 Observer= 2°, Illuminant = D65 const refY = 1.0; // ref_Y = 100.000 const refZ = 1.08883; // ref_Z = 108.883 function pivot(n: number) { return n > 0.206893034 ? n ** 3 : (n - 16 / 116) / 7.787; } export function lab2xyz(L: number, a: number, b: number) { const y = (L + 16) / 116; const x = a / 500 + y; const z = y - b / 200; return { x: refX * pivot(x), y: refY * pivot(y), z: refZ * pivot(z), }; }