allc/src/conversions/rgb/to-yuv-hdtv.ts

A small typescript package for color conversion.

import {YUV_HDTV_W_B, YUV_HDTV_W_G, YUV_HDTV_W_R, YUV_U_MAX, YUV_V_MAX} from "../yuv";

// TODO: docs
export const toYUVHDTVYFromRGB = (
    r: number,
    g: number,
    b: number,
) => YUV_HDTV_W_R * r + YUV_HDTV_W_G * g + YUV_HDTV_W_B * b;

// TODO: docs
export const toYUVHDTVUFromRGB = (
    r: number,
    g: number,
    b: number,
) => YUV_U_MAX * (b - YUV_HDTV_W_R * r + YUV_HDTV_W_G * g + YUV_HDTV_W_B * b) / (1 - YUV_HDTV_W_B);

// TODO: docs
export const toYUVHDTVVFromRGB = (
    r: number,
    g: number,
    b: number,
) => YUV_V_MAX * (r - YUV_HDTV_W_R * r + YUV_HDTV_W_G * g + YUV_HDTV_W_B * b) / (1 - YUV_HDTV_W_R);