Disabled image quality patch
This commit is contained in:
parent
1f0adabde2
commit
4f6078943c
@ -1,287 +1,289 @@
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package main
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import (
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"bytes"
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"fmt"
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"image"
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"image/color"
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_ "image/jpeg"
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"image/png"
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"io/ioutil"
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"os"
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)
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func main() {}
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func main() {
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data, err := ioutil.ReadFile("input.jpg")
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// import (
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// "bytes"
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// "fmt"
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// "image"
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// "image/color"
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// _ "image/jpeg"
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// "image/png"
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// "io/ioutil"
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// "os"
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// )
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if err != nil {
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panic(err)
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}
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// func main() {
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// data, err := ioutil.ReadFile("input.jpg")
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img, _, err := image.Decode(bytes.NewReader(data))
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// if err != nil {
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// panic(err)
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// }
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if err != nil {
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panic(err)
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}
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// img, _, err := image.Decode(bytes.NewReader(data))
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improved := ImproveQuality(img)
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f, err := os.Create("output.png")
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// if err != nil {
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// panic(err)
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// }
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if err != nil {
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panic(err)
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}
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// improved := ImproveQuality(img)
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// f, err := os.Create("output.png")
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defer f.Close()
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png.Encode(f, improved)
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}
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// if err != nil {
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// panic(err)
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// }
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// Pixel ...
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type Pixel struct {
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X int
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Y int
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}
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// defer f.Close()
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// png.Encode(f, improved)
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// }
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// Area ...
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type Area struct {
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Pixels []Pixel
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totalR uint64
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totalG uint64
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totalB uint64
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totalA uint64
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}
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// // Pixel ...
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// type Pixel struct {
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// X int
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// Y int
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// }
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// Add ...
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func (area *Area) Add(x, y int, r, g, b, a uint32) {
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area.Pixels = append(area.Pixels, Pixel{
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X: x,
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Y: y,
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})
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// // Area ...
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// type Area struct {
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// Pixels []Pixel
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// totalR uint64
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// totalG uint64
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// totalB uint64
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// totalA uint64
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// }
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area.totalR += uint64(r)
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area.totalG += uint64(g)
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area.totalB += uint64(b)
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area.totalA += uint64(a)
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}
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// // Add ...
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// func (area *Area) Add(x, y int, r, g, b, a uint32) {
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// area.Pixels = append(area.Pixels, Pixel{
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// X: x,
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// Y: y,
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// })
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// AverageColor ...
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func (area *Area) AverageColor() color.Color {
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if len(area.Pixels) == 0 {
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return color.Transparent
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}
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// area.totalR += uint64(r)
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// area.totalG += uint64(g)
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// area.totalB += uint64(b)
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// area.totalA += uint64(a)
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// }
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return color.RGBA64{
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R: uint16(area.totalR / uint64(len(area.Pixels))),
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G: uint16(area.totalG / uint64(len(area.Pixels))),
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B: uint16(area.totalB / uint64(len(area.Pixels))),
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A: uint16(area.totalA / uint64(len(area.Pixels))),
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}
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}
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// // AverageColor ...
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// func (area *Area) AverageColor() color.Color {
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// if len(area.Pixels) == 0 {
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// return color.Transparent
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// }
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const (
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tolerance = uint32(3000)
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)
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// return color.RGBA64{
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// R: uint16(area.totalR / uint64(len(area.Pixels))),
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// G: uint16(area.totalG / uint64(len(area.Pixels))),
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// B: uint16(area.totalB / uint64(len(area.Pixels))),
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// A: uint16(area.totalA / uint64(len(area.Pixels))),
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// }
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// }
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func diffAbs(a uint32, b uint32) uint32 {
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if a > b {
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return a - b
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}
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// const (
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// tolerance = uint32(3000)
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// )
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return b - a
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}
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// func diffAbs(a uint32, b uint32) uint32 {
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// if a > b {
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// return a - b
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// }
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// ImproveQuality returns the average color of an image in HSL format.
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func ImproveQuality(img image.Image) *image.NRGBA {
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width := img.Bounds().Dx()
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height := img.Bounds().Dy()
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clone := image.NewNRGBA(image.Rect(0, 0, width, height))
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areas := []*Area{}
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areaIndexMap := make([]int, width*height)
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// return b - a
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// }
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for x := 0; x < width; x++ {
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for y := 0; y < height; y++ {
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color := img.At(x, y)
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r, g, b, a := color.RGBA()
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areaIndex := -1
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// // ImproveQuality returns the average color of an image in HSL format.
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// func ImproveQuality(img image.Image) *image.NRGBA {
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// width := img.Bounds().Dx()
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// height := img.Bounds().Dy()
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// clone := image.NewNRGBA(image.Rect(0, 0, width, height))
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// areas := []*Area{}
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// areaIndexMap := make([]int, width*height)
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// Find similar area
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for i := 0; i < len(areas); i++ {
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area := areas[i]
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avgR, avgG, avgB, _ := area.AverageColor().RGBA()
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// for x := 0; x < width; x++ {
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// for y := 0; y < height; y++ {
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// color := img.At(x, y)
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// r, g, b, a := color.RGBA()
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// areaIndex := -1
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// Is the color similar?
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if diffAbs(r, avgR) <= tolerance && diffAbs(g, avgG) <= tolerance && diffAbs(b, avgB) <= tolerance {
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areaIndex = i
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break
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}
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}
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// // Find similar area
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// for i := 0; i < len(areas); i++ {
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// area := areas[i]
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// avgR, avgG, avgB, _ := area.AverageColor().RGBA()
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// Insert new area
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if areaIndex == -1 {
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areaIndex = len(areas)
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areas = append(areas, &Area{})
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}
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// // Is the color similar?
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// if diffAbs(r, avgR) <= tolerance && diffAbs(g, avgG) <= tolerance && diffAbs(b, avgB) <= tolerance {
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// areaIndex = i
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// break
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// }
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// }
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areaIndexMap[y*width+x] = areaIndex
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areas[areaIndex].Add(x, y, r, g, b, a)
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}
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}
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// // Insert new area
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// if areaIndex == -1 {
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// areaIndex = len(areas)
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// areas = append(areas, &Area{})
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// }
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fmt.Println(len(areas), "areas")
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// areaIndexMap[y*width+x] = areaIndex
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// areas[areaIndex].Add(x, y, r, g, b, a)
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// }
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// }
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// Reduce noise
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noiseCount := 0
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// fmt.Println(len(areas), "areas")
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for areaIndex, area := range areas {
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noisePixelIndices := []int{}
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areaSurroundedBy := map[int]int{}
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// // Reduce noise
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// noiseCount := 0
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for i := 0; i < len(area.Pixels); i++ {
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// If pixel is surrounded by 4 different areas, remove it
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pixel := area.Pixels[i]
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x := pixel.X
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y := pixel.Y
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left := areaIndex
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right := areaIndex
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top := areaIndex
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bottom := areaIndex
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// for areaIndex, area := range areas {
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// noisePixelIndices := []int{}
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// areaSurroundedBy := map[int]int{}
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if x > 0 {
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left = areaIndexMap[y*width+(x-1)]
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}
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// for i := 0; i < len(area.Pixels); i++ {
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// // If pixel is surrounded by 4 different areas, remove it
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// pixel := area.Pixels[i]
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// x := pixel.X
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// y := pixel.Y
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// left := areaIndex
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// right := areaIndex
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// top := areaIndex
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// bottom := areaIndex
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if x < width-1 {
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right = areaIndexMap[y*width+(x+1)]
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}
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// if x > 0 {
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// left = areaIndexMap[y*width+(x-1)]
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// }
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if y > 0 {
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top = areaIndexMap[(y-1)*width+x]
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}
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// if x < width-1 {
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// right = areaIndexMap[y*width+(x+1)]
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// }
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if y < height-1 {
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bottom = areaIndexMap[(y+1)*width+x]
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}
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// if y > 0 {
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// top = areaIndexMap[(y-1)*width+x]
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// }
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differentNeighbors := 0
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// if y < height-1 {
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// bottom = areaIndexMap[(y+1)*width+x]
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// }
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if left != areaIndex {
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differentNeighbors++
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}
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// differentNeighbors := 0
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if right != areaIndex {
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differentNeighbors++
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}
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// if left != areaIndex {
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// differentNeighbors++
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// }
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if top != areaIndex {
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differentNeighbors++
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}
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// if right != areaIndex {
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// differentNeighbors++
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// }
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if bottom != areaIndex {
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differentNeighbors++
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}
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// if top != areaIndex {
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// differentNeighbors++
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// }
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// Determine surrounding area
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areaIndexScore := map[int]int{}
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// if bottom != areaIndex {
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// differentNeighbors++
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// }
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areaIndexScore[left]++
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areaIndexScore[right]++
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areaIndexScore[top]++
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areaIndexScore[bottom]++
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// // Determine surrounding area
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// areaIndexScore := map[int]int{}
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areaSurroundedBy[left]++
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areaSurroundedBy[right]++
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areaSurroundedBy[top]++
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areaSurroundedBy[bottom]++
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// areaIndexScore[left]++
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// areaIndexScore[right]++
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// areaIndexScore[top]++
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// areaIndexScore[bottom]++
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newAreaIndex := -1
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bestScore := 0
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// areaSurroundedBy[left]++
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// areaSurroundedBy[right]++
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// areaSurroundedBy[top]++
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// areaSurroundedBy[bottom]++
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for checkIndex, score := range areaIndexScore {
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if score > bestScore {
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bestScore = score
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newAreaIndex = checkIndex
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}
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}
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// newAreaIndex := -1
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// bestScore := 0
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if differentNeighbors >= 3 && bestScore >= 3 {
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noiseCount++
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noisePixelIndices = append(noisePixelIndices, i)
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// for checkIndex, score := range areaIndexScore {
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// if score > bestScore {
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// bestScore = score
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// newAreaIndex = checkIndex
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// }
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// }
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// Add to surrounding area
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r, g, b, a := img.At(x, y).RGBA()
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areas[newAreaIndex].Add(x, y, r, g, b, a)
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// if differentNeighbors >= 3 && bestScore >= 3 {
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// noiseCount++
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// noisePixelIndices = append(noisePixelIndices, i)
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area.totalR -= uint64(r)
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area.totalG -= uint64(g)
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area.totalB -= uint64(b)
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area.totalA -= uint64(a)
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}
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}
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// // Add to surrounding area
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// r, g, b, a := img.At(x, y).RGBA()
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// areas[newAreaIndex].Add(x, y, r, g, b, a)
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// Remove noise pixels
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offset := 0
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// area.totalR -= uint64(r)
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// area.totalG -= uint64(g)
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// area.totalB -= uint64(b)
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// area.totalA -= uint64(a)
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// }
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// }
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for _, removal := range noisePixelIndices {
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index := removal - offset
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area.Pixels = append(area.Pixels[:index], area.Pixels[index+1:]...)
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offset++
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}
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// // Remove noise pixels
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// offset := 0
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// // Determine surrounding area
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// surroundingAreaIndex := -1
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// bestScore := 0
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// for _, removal := range noisePixelIndices {
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// index := removal - offset
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// area.Pixels = append(area.Pixels[:index], area.Pixels[index+1:]...)
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// offset++
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// }
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// for checkIndex, score := range areaSurroundedBy {
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// if score > bestScore && checkIndex != areaIndex {
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// bestScore = score
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// surroundingAreaIndex = checkIndex
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// }
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// }
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// // // Determine surrounding area
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// // surroundingAreaIndex := -1
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// // bestScore := 0
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// surroundingArea := areas[surroundingAreaIndex]
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// // for checkIndex, score := range areaSurroundedBy {
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// // if score > bestScore && checkIndex != areaIndex {
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// // bestScore = score
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// // surroundingAreaIndex = checkIndex
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// // }
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// // }
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// if areaIndex != surroundingAreaIndex && len(surroundingArea.Pixels) > len(area.Pixels)*2 {
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// // const surroundTolerance = 5000
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// // surroundingArea := areas[surroundingAreaIndex]
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// // r1, g1, b1, a1 := area.AverageColor().RGBA()
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// // r2, g2, b2, a2 := surroundingArea.AverageColor().RGBA()
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// // if areaIndex != surroundingAreaIndex && len(surroundingArea.Pixels) > len(area.Pixels)*2 {
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// // // const surroundTolerance = 5000
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// // if diffAbs(r1, r2) < surroundTolerance && diffAbs(g1, g2) < surroundTolerance && diffAbs(b1, b2) < surroundTolerance && diffAbs(a1, a2) < surroundTolerance {
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// // // fmt.Println(areaIndex, "surrounded by", surroundingAreaIndex, "|", len(area.Pixels), len(surroundingArea.Pixels))
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// // // r1, g1, b1, a1 := area.AverageColor().RGBA()
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// // // r2, g2, b2, a2 := surroundingArea.AverageColor().RGBA()
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// // // Add pixels to surrounding area
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// // for _, pixel := range area.Pixels {
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// // r, g, b, a := img.At(pixel.X, pixel.Y).RGBA()
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// // surroundingArea.Add(pixel.X, pixel.Y, r, g, b, a)
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// // }
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// // // if diffAbs(r1, r2) < surroundTolerance && diffAbs(g1, g2) < surroundTolerance && diffAbs(b1, b2) < surroundTolerance && diffAbs(a1, a2) < surroundTolerance {
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// // // // fmt.Println(areaIndex, "surrounded by", surroundingAreaIndex, "|", len(area.Pixels), len(surroundingArea.Pixels))
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// // // Remove this area
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// // area.Pixels = nil
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// // area.totalR = 0
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// // area.totalG = 0
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// // area.totalB = 0
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// // area.totalA = 0
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// // }
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// }
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}
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// // // // Add pixels to surrounding area
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// // // for _, pixel := range area.Pixels {
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// // // r, g, b, a := img.At(pixel.X, pixel.Y).RGBA()
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// // // surroundingArea.Add(pixel.X, pixel.Y, r, g, b, a)
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// // // }
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fmt.Println(noiseCount, "noise pixels")
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// // // // Remove this area
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// // // area.Pixels = nil
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// // // area.totalR = 0
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// // // area.totalG = 0
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// // // area.totalB = 0
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// // // area.totalA = 0
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// // // }
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// // }
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// }
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pixelCount := 0
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// fmt.Println(noiseCount, "noise pixels")
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for _, area := range areas {
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pixelCount += len(area.Pixels)
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}
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// pixelCount := 0
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fmt.Println(pixelCount, "pixels", width*height)
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// for _, area := range areas {
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// pixelCount += len(area.Pixels)
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// }
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// Build image from areas
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for _, area := range areas {
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avgColor := area.AverageColor()
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// fmt.Println(pixelCount, "pixels", width*height)
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for _, pixel := range area.Pixels {
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clone.Set(pixel.X, pixel.Y, avgColor)
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}
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}
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// // Build image from areas
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// for _, area := range areas {
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// avgColor := area.AverageColor()
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return clone
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}
|
||||
// for _, pixel := range area.Pixels {
|
||||
// clone.Set(pixel.X, pixel.Y, avgColor)
|
||||
// }
|
||||
// }
|
||||
|
||||
// return clone
|
||||
// }
|
||||
|
||||
Loading…
Reference in New Issue
Block a user