diff options
Diffstat (limited to 'src/image/color/ycbcr.go')
| -rw-r--r-- | src/image/color/ycbcr.go | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/image/color/ycbcr.go b/src/image/color/ycbcr.go index fd2443078c..8b6d508588 100644 --- a/src/image/color/ycbcr.go +++ b/src/image/color/ycbcr.go @@ -10,7 +10,7 @@ func RGBToYCbCr(r, g, b uint8) (uint8, uint8, uint8) { // Y' = 0.2990*R + 0.5870*G + 0.1140*B // Cb = -0.1687*R - 0.3313*G + 0.5000*B + 128 // Cr = 0.5000*R - 0.4187*G - 0.0813*B + 128 - // http://www.w3.org/Graphics/JPEG/jfif3.pdf says Y but means Y'. + // https://www.w3.org/Graphics/JPEG/jfif3.pdf says Y but means Y'. r1 := int32(r) g1 := int32(g) @@ -60,7 +60,7 @@ func YCbCrToRGB(y, cb, cr uint8) (uint8, uint8, uint8) { // R = Y' + 1.40200*(Cr-128) // G = Y' - 0.34414*(Cb-128) - 0.71414*(Cr-128) // B = Y' + 1.77200*(Cb-128) - // http://www.w3.org/Graphics/JPEG/jfif3.pdf says Y but means Y'. + // https://www.w3.org/Graphics/JPEG/jfif3.pdf says Y but means Y'. // // Those formulae use non-integer multiplication factors. When computing, // integer math is generally faster than floating point math. We multiply @@ -163,7 +163,7 @@ func YCbCrToRGB(y, cb, cr uint8) (uint8, uint8, uint8) { // // Conversion between RGB and Y'CbCr is lossy and there are multiple, slightly // different formulae for converting between the two. This package follows -// the JFIF specification at http://www.w3.org/Graphics/JPEG/jfif3.pdf. +// the JFIF specification at https://www.w3.org/Graphics/JPEG/jfif3.pdf. type YCbCr struct { Y, Cb, Cr uint8 } |