Merge branch 'charlievieth-master'
This commit is contained in:
commit
03982f698d
14
converter.go
14
converter.go
|
@ -41,7 +41,7 @@ func clampUint16(in int64) uint16 {
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}
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}
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|
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func resizeGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []int32, offset []int, filterLength int) {
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func resizeGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []int32, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Bounds().Dx(), in.Bounds().Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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for x := newBounds.Min.X; x < newBounds.Max.X; x++ {
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for x := newBounds.Min.X; x < newBounds.Max.X; x++ {
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@ -89,7 +89,7 @@ func resizeGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []in
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}
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}
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func resizeRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []int16, offset []int, filterLength int) {
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func resizeRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []int16, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 4
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minX := oldBounds.Min.X * 4
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 4
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 4
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@ -131,7 +131,7 @@ func resizeRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []int16,
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}
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}
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func resizeRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []int32, offset []int, filterLength int) {
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func resizeRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []int32, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 8
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minX := oldBounds.Min.X * 8
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 8
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 8
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@ -181,7 +181,7 @@ func resizeRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []i
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}
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}
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func resizeGray(in *image.Gray, out *image.Gray, scale float64, coeffs []int16, offset []int, filterLength int) {
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func resizeGray(in *image.Gray, out *image.Gray, scale float64, coeffs []int16, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X
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minX := oldBounds.Min.X
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1)
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1)
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@ -217,7 +217,7 @@ func resizeGray(in *image.Gray, out *image.Gray, scale float64, coeffs []int16,
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}
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}
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func resizeGray16(in *image.Gray16, out *image.Gray16, scale float64, coeffs []int32, offset []int, filterLength int) {
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func resizeGray16(in *image.Gray16, out *image.Gray16, scale float64, coeffs []int32, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 2
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minX := oldBounds.Min.X * 2
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 2
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 2
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@ -255,7 +255,7 @@ func resizeGray16(in *image.Gray16, out *image.Gray16, scale float64, coeffs []i
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}
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}
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func resizeYCbCr(in *ycc, out *ycc, scale float64, coeffs []int16, offset []int, filterLength int) {
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func resizeYCbCr(in *ycc, out *ycc, scale float64, coeffs []int16, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 3
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minX := oldBounds.Min.X * 3
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 3
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 3
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@ -295,7 +295,7 @@ func resizeYCbCr(in *ycc, out *ycc, scale float64, coeffs []int16, offset []int,
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}
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}
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func nearestYCbCr(in *ycc, out *ycc, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestYCbCr(in *ycc, out *ycc, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 3
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minX := oldBounds.Min.X * 3
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 3
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 3
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10
nearest.go
10
nearest.go
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@ -35,7 +35,7 @@ func floatToUint16(x float32) uint16 {
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}
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}
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func nearestGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Bounds().Dx(), in.Bounds().Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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for x := newBounds.Min.X; x < newBounds.Max.X; x++ {
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for x := newBounds.Min.X; x < newBounds.Max.X; x++ {
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@ -82,7 +82,7 @@ func nearestGeneric(in image.Image, out *image.RGBA64, scale float64, coeffs []b
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}
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}
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func nearestRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 4
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minX := oldBounds.Min.X * 4
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 4
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 4
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@ -123,7 +123,7 @@ func nearestRGBA(in *image.RGBA, out *image.RGBA, scale float64, coeffs []bool,
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}
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}
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func nearestRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 8
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minX := oldBounds.Min.X * 8
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 8
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 8
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@ -172,7 +172,7 @@ func nearestRGBA64(in *image.RGBA64, out *image.RGBA64, scale float64, coeffs []
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}
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}
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func nearestGray(in *image.Gray, out *image.Gray, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestGray(in *image.Gray, out *image.Gray, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X
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minX := oldBounds.Min.X
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1)
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1)
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@ -207,7 +207,7 @@ func nearestGray(in *image.Gray, out *image.Gray, scale float64, coeffs []bool,
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}
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}
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func nearestGray16(in *image.Gray16, out *image.Gray16, scale float64, coeffs []bool, offset []int, filterLength int) {
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func nearestGray16(in *image.Gray16, out *image.Gray16, scale float64, coeffs []bool, offset []int, filterLength int) {
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oldBounds := in.Bounds()
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oldBounds := image.Rect(0, 0, in.Rect.Dx(), in.Rect.Dy())
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newBounds := out.Bounds()
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newBounds := out.Bounds()
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minX := oldBounds.Min.X * 2
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minX := oldBounds.Min.X * 2
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 2
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maxX := (oldBounds.Max.X - oldBounds.Min.X - 1) * 2
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@ -3,14 +3,16 @@ package resize
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import (
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import (
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"image"
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"image"
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"image/color"
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"image/color"
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"runtime"
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"image/png"
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"os"
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//"runtime"
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"testing"
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"testing"
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)
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)
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var img = image.NewGray16(image.Rect(0, 0, 3, 3))
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var img = image.NewGray16(image.Rect(0, 0, 3, 3))
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func init() {
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func init() {
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runtime.GOMAXPROCS(runtime.NumCPU())
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//runtime.GOMAXPROCS(runtime.NumCPU())
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img.Set(1, 1, color.White)
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img.Set(1, 1, color.White)
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}
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}
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@ -64,6 +66,12 @@ func Test_SameColor(t *testing.T) {
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}
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}
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}
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}
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func Test_Bounds(t *testing.T) {
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img := image.NewRGBA(image.Rect(20, 10, 200, 99))
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out := Resize(80, 80, img, Lanczos2)
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out.At(0, 0)
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}
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|
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func Benchmark_BigResizeLanczos3(b *testing.B) {
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func Benchmark_BigResizeLanczos3(b *testing.B) {
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var m image.Image
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var m image.Image
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for i := 0; i < b.N; i++ {
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for i := 0; i < b.N; i++ {
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@ -117,3 +125,21 @@ func Benchmark_LargeJpegThumbLanczos2(b *testing.B) {
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func Benchmark_LargeJpegThumbLanczos3(b *testing.B) {
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func Benchmark_LargeJpegThumbLanczos3(b *testing.B) {
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jpegThumb(b, Lanczos3)
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jpegThumb(b, Lanczos3)
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}
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}
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|
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|
func Benchmark_LargeN(b *testing.B) {
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|
file, _ := os.Open("M94A0467.png")
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|
defer file.Close()
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|
img, _ := png.Decode(file)
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|
var output image.Image
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|
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|
b.ResetTimer()
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|
for i := 0; i < b.N; i++ {
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|
output = Resize(900, 0, img, Bicubic)
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|
}
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|
b.StopTimer()
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|
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|
output.At(0, 0)
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|
outPng, _ := os.Create("out.png")
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|
defer outPng.Close()
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|
png.Encode(outPng, output)
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|
}
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|
|
5
ycc.go
5
ycc.go
|
@ -38,7 +38,7 @@ type ycc struct {
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// PixOffset returns the index of the first element of Pix that corresponds to
|
// PixOffset returns the index of the first element of Pix that corresponds to
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// the pixel at (x, y).
|
// the pixel at (x, y).
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func (p *ycc) PixOffset(x, y int) int {
|
func (p *ycc) PixOffset(x, y int) int {
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return (y * p.Stride) + (x * 3)
|
return (y-p.Rect.Min.Y)*p.Stride + (x-p.Rect.Min.X)*3
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}
|
}
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|
|
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func (p *ycc) Bounds() image.Rectangle {
|
func (p *ycc) Bounds() image.Rectangle {
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|
@ -159,8 +159,9 @@ func (p *ycc) YCbCr() *image.YCbCr {
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// imageYCbCrToYCC converts a YCbCr image to a ycc image for resizing.
|
// imageYCbCrToYCC converts a YCbCr image to a ycc image for resizing.
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func imageYCbCrToYCC(in *image.YCbCr) *ycc {
|
func imageYCbCrToYCC(in *image.YCbCr) *ycc {
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w, h := in.Rect.Dx(), in.Rect.Dy()
|
w, h := in.Rect.Dx(), in.Rect.Dy()
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|
r := image.Rect(0, 0, w, h)
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buf := make([]uint8, 3*w*h)
|
buf := make([]uint8, 3*w*h)
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p := ycc{Pix: buf, Stride: 3 * w, Rect: in.Rect, SubsampleRatio: in.SubsampleRatio}
|
p := ycc{Pix: buf, Stride: 3 * w, Rect: r, SubsampleRatio: in.SubsampleRatio}
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var off int
|
var off int
|
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|
|
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switch in.SubsampleRatio {
|
switch in.SubsampleRatio {
|
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|
|
93
ycc_test.go
93
ycc_test.go
|
@ -18,6 +18,7 @@ package resize
|
||||||
|
|
||||||
import (
|
import (
|
||||||
"image"
|
"image"
|
||||||
|
"image/color"
|
||||||
"testing"
|
"testing"
|
||||||
)
|
)
|
||||||
|
|
||||||
|
@ -119,3 +120,95 @@ func TestConvertYCbCr(t *testing.T) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func TestYCbCr(t *testing.T) {
|
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|
rects := []image.Rectangle{
|
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|
image.Rect(0, 0, 16, 16),
|
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|
image.Rect(1, 0, 16, 16),
|
||||||
|
image.Rect(0, 1, 16, 16),
|
||||||
|
image.Rect(1, 1, 16, 16),
|
||||||
|
image.Rect(1, 1, 15, 16),
|
||||||
|
image.Rect(1, 1, 16, 15),
|
||||||
|
image.Rect(1, 1, 15, 15),
|
||||||
|
image.Rect(2, 3, 14, 15),
|
||||||
|
image.Rect(7, 0, 7, 16),
|
||||||
|
image.Rect(0, 8, 16, 8),
|
||||||
|
image.Rect(0, 0, 10, 11),
|
||||||
|
image.Rect(5, 6, 16, 16),
|
||||||
|
image.Rect(7, 7, 8, 8),
|
||||||
|
image.Rect(7, 8, 8, 9),
|
||||||
|
image.Rect(8, 7, 9, 8),
|
||||||
|
image.Rect(8, 8, 9, 9),
|
||||||
|
image.Rect(7, 7, 17, 17),
|
||||||
|
image.Rect(8, 8, 17, 17),
|
||||||
|
image.Rect(9, 9, 17, 17),
|
||||||
|
image.Rect(10, 10, 17, 17),
|
||||||
|
}
|
||||||
|
subsampleRatios := []image.YCbCrSubsampleRatio{
|
||||||
|
image.YCbCrSubsampleRatio444,
|
||||||
|
image.YCbCrSubsampleRatio422,
|
||||||
|
image.YCbCrSubsampleRatio420,
|
||||||
|
image.YCbCrSubsampleRatio440,
|
||||||
|
}
|
||||||
|
deltas := []image.Point{
|
||||||
|
image.Pt(0, 0),
|
||||||
|
image.Pt(1000, 1001),
|
||||||
|
image.Pt(5001, -400),
|
||||||
|
image.Pt(-701, -801),
|
||||||
|
}
|
||||||
|
for _, r := range rects {
|
||||||
|
for _, subsampleRatio := range subsampleRatios {
|
||||||
|
for _, delta := range deltas {
|
||||||
|
testYCbCr(t, r, subsampleRatio, delta)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if testing.Short() {
|
||||||
|
break
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func testYCbCr(t *testing.T, r image.Rectangle, subsampleRatio image.YCbCrSubsampleRatio, delta image.Point) {
|
||||||
|
// Create a YCbCr image m, whose bounds are r translated by (delta.X, delta.Y).
|
||||||
|
r1 := r.Add(delta)
|
||||||
|
img := image.NewYCbCr(r1, subsampleRatio)
|
||||||
|
|
||||||
|
// Initialize img's pixels. For 422 and 420 subsampling, some of the Cb and Cr elements
|
||||||
|
// will be set multiple times. That's OK. We just want to avoid a uniform image.
|
||||||
|
for y := r1.Min.Y; y < r1.Max.Y; y++ {
|
||||||
|
for x := r1.Min.X; x < r1.Max.X; x++ {
|
||||||
|
yi := img.YOffset(x, y)
|
||||||
|
ci := img.COffset(x, y)
|
||||||
|
img.Y[yi] = uint8(16*y + x)
|
||||||
|
img.Cb[ci] = uint8(y + 16*x)
|
||||||
|
img.Cr[ci] = uint8(y + 16*x)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
m := imageYCbCrToYCC(img)
|
||||||
|
|
||||||
|
// Make various sub-images of m.
|
||||||
|
for y0 := delta.Y + 3; y0 < delta.Y+7; y0++ {
|
||||||
|
for y1 := delta.Y + 8; y1 < delta.Y+13; y1++ {
|
||||||
|
for x0 := delta.X + 3; x0 < delta.X+7; x0++ {
|
||||||
|
for x1 := delta.X + 8; x1 < delta.X+13; x1++ {
|
||||||
|
subRect := image.Rect(x0, y0, x1, y1)
|
||||||
|
sub := m.SubImage(subRect).(*ycc)
|
||||||
|
|
||||||
|
// For each point in the sub-image's bounds, check that m.At(x, y) equals sub.At(x, y).
|
||||||
|
for y := sub.Rect.Min.Y; y < sub.Rect.Max.Y; y++ {
|
||||||
|
for x := sub.Rect.Min.X; x < sub.Rect.Max.X; x++ {
|
||||||
|
color0 := m.At(x, y).(color.YCbCr)
|
||||||
|
color1 := sub.At(x, y).(color.YCbCr)
|
||||||
|
if color0 != color1 {
|
||||||
|
t.Errorf("r=%v, subsampleRatio=%v, delta=%v, x=%d, y=%d, color0=%v, color1=%v",
|
||||||
|
r, subsampleRatio, delta, x, y, color0, color1)
|
||||||
|
return
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
Loading…
Reference in New Issue
Block a user