The YCbCr to RGB formula

 

  RGB2YCbCr conversions,the range is RGB[0,255] to YCbCr[0,255] : 

    Y  = R *  0.301 + G *  0.586 + B *  0.113
    Cb = R * -0.168 + G * -0.332 + B *  0.500 + 128
    Cr = R *  0.500 + G * -0.417 + B * -0.082 + 128

   When the Y range of [0,255],UV range of [0,255],the YCbCr to RGB formula is :

    R  = Y +                       + (Cr - 128) *  1.40200
    G  = Y + (Cb - 128) * -0.34414 + (Cr - 128) * -0.71414
    B  = Y + (Cb - 128) *  1.77200

　When the Y range of [16,235],UV range of [16,240],the YCbCr to RGB formula is :

　　R = (Y - 16) * 1.164 + (Cr - 128) * 1.596
    G = (Y - 16) * 1.164 - (Cr - 128) * 0.813 - (Cb - 128) * 0.391
    B = (Y - 16) * 1.164 + (Cb - 128) * 2.081

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