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Results 1 - 10 of 12 for ycbcr (0.08 sec)
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src/image/ycbcr.go
func (p *YCbCr) RGBA64At(x, y int) color.RGBA64 { r, g, b, a := p.YCbCrAt(x, y).RGBA() return color.RGBA64{uint16(r), uint16(g), uint16(b), uint16(a)} } func (p *YCbCr) YCbCrAt(x, y int) color.YCbCr { if !(Point{x, y}.In(p.Rect)) { return color.YCbCr{} } yi := p.YOffset(x, y) ci := p.COffset(x, y) return color.YCbCr{ p.Y[yi], p.Cb[ci], p.Cr[ci], } }
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Oct 19 12:02:45 UTC 2023 - 8.7K bytes - Viewed (0) -
src/image/color/ycbcr.go
} // YCbCrModel is the [Model] for Y'CbCr colors. var YCbCrModel Model = ModelFunc(yCbCrModel) func yCbCrModel(c Color) Color { if _, ok := c.(YCbCr); ok { return c } r, g, b, _ := c.RGBA() y, u, v := RGBToYCbCr(uint8(r>>8), uint8(g>>8), uint8(b>>8)) return YCbCr{y, u, v} } // NYCbCrA represents a non-alpha-premultiplied Y'CbCr-with-alpha color, having
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Oct 19 12:02:45 UTC 2023 - 10.8K bytes - Viewed (0) -
src/image/jpeg/writer.go
default: rgba, _ := m.(*image.RGBA) ycbcr, _ := m.(*image.YCbCr) for y := bounds.Min.Y; y < bounds.Max.Y; y += 16 { for x := bounds.Min.X; x < bounds.Max.X; x += 16 { for i := 0; i < 4; i++ { xOff := (i & 1) * 8 yOff := (i & 2) * 4 p := image.Pt(x+xOff, y+yOff) if rgba != nil { rgbaToYCbCr(rgba, p, &b, &cb[i], &cr[i]) } else if ycbcr != nil {
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Oct 19 12:02:45 UTC 2023 - 17.1K bytes - Viewed (0) -
src/image/jpeg/reader.go
// or CMYK)" as per // https://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/JPEG.html#Adobe // we assume that it is YCbCrK. This matches libjpeg's jdapimin.c. if d.adobeTransform != adobeTransformUnknown { // Convert the YCbCr part of the YCbCrK to RGB, invert the RGB to get // CMY, and patch in the original K. The RGB to CMY inversion cancels
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Oct 19 12:02:45 UTC 2023 - 22.5K bytes - Viewed (0) -
src/image/color/color.go
return c } r, g, b, _ := c.RGBA() // These coefficients (the fractions 0.299, 0.587 and 0.114) are the same // as those given by the JFIF specification and used by func RGBToYCbCr in // ycbcr.go. // // Note that 19595 + 38470 + 7471 equals 65536. // // The 24 is 16 + 8. The 16 is the same as used in RGBToYCbCr. The 8 is // because the return value is 8 bit color, not 16 bit color.
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Oct 19 12:02:45 UTC 2023 - 8.3K bytes - Viewed (0) -
src/image/jpeg/reader_test.go
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Apr 25 00:46:29 UTC 2024 - 24.4K bytes - Viewed (0) -
src/image/draw/bench_test.go
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Jul 20 18:07:05 UTC 2023 - 6.6K bytes - Viewed (0) -
src/image/draw/draw_test.go
{"nrgbaNilSrc", vgradGreenNRGBA(90), nil, Src, color.RGBA{0, 46, 0, 90}}, // Uniform mask (100%, 75%, nil) and variable YCbCr source. // At (x, y) == (8, 8): // The destination pixel is {136, 0, 0, 255}. // The source pixel is {0, 0, 136} in YCbCr-space, which is {11, 38, 0, 255} in RGB-space. {"ycbcr", vgradCr(), fillAlpha(255), Over, color.RGBA{11, 38, 0, 255}}, {"ycbcrSrc", vgradCr(), fillAlpha(255), Src, color.RGBA{11, 38, 0, 255}},
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Jul 20 18:07:05 UTC 2023 - 26K bytes - Viewed (0) -
src/image/jpeg/scan.go
subsampleRatio = image.YCbCrSubsampleRatio410 default: panic("unreachable") } m := image.NewYCbCr(image.Rect(0, 0, 8*h0*mxx, 8*v0*myy), subsampleRatio) d.img3 = m.SubImage(image.Rect(0, 0, d.width, d.height)).(*image.YCbCr) if d.nComp == 4 { h3, v3 := d.comp[3].h, d.comp[3].v d.blackPix = make([]byte, 8*h3*mxx*8*v3*myy) d.blackStride = 8 * h3 * mxx } } // Specified in section B.2.3.
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Thu Apr 25 00:46:29 UTC 2024 - 15.7K bytes - Viewed (0) -
src/image/draw/draw.go
} return case *image.RGBA: drawCopyOver(dst0, r, src0, sp) return case *image.NRGBA: drawNRGBAOver(dst0, r, src0, sp) return case *image.YCbCr: // An image.YCbCr is always fully opaque, and so if the // mask is nil (i.e. fully opaque) then the op is // effectively always Src. Similarly for image.Gray and // image.CMYK.
Registered: Wed Jun 12 16:32:35 UTC 2024 - Last Modified: Mon Mar 11 17:08:05 UTC 2024 - 33.9K bytes - Viewed (0)