celogeek/go-comic-converter
1
0
Fork 0
mirror of https://github.com/celogeek/go-comic-converter.git synced 2025-05-25 00:02:37 +02:00
Code Issues Packages Projects Releases Wiki Activity

avoid double conv

Browse Source
This commit is contained in:
Celogeek 2022-12-30 18:30:38 +01:00
parent 96c7d761ee
commit 8ede48431c
Signed by: celogeek
GPG Key ID: E6B7BDCFC446233A
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
internal/image-converter/core.go
View File

@ -11,21 +11,21 @@ import (
"golang.org/x/image/draw"
)
var AlgoGray = map[string]func(color.Color) color.Color{
"default": func(c color.Color) color.Color {
return color.GrayModel.Convert(c)
var AlgoGray = map[string]func(color.Color) color.Gray{
"default": func(c color.Color) color.Gray {
return color.GrayModel.Convert(c).(color.Gray)
},
"mean": func(c color.Color) color.Color {
"mean": func(c color.Color) color.Gray {
r, g, b, _ := c.RGBA()
y := float64(r+g+b) / 3 * (255.0 / 65535)
return color.Gray{uint8(y)}
},
"luma": func(c color.Color) color.Color {
"luma": func(c color.Color) color.Gray {
r, g, b, _ := c.RGBA()
y := (0.2126*float64(r) + 0.7152*float64(g) + 0.0722*float64(b)) * (255.0 / 65535)
return color.Gray{uint8(y)}
},
"luster": func(c color.Color) color.Color {
"luster": func(c color.Color) color.Gray {
r, g, b, _ := c.RGBA()
arr := []float64{float64(r), float64(g), float64(b)}
sort.Float64s(arr)
@ -43,7 +43,7 @@ func toGray(img image.Image, algo string) *image.Gray {
for y := img.Bounds().Min.Y; y < img.Bounds().Max.Y; y++ {
for x := img.Bounds().Min.X; x < img.Bounds().Max.X; x++ {
grayImg.Set(x, y, algoConv(img.At(x, y)))
grayImg.SetGray(x, y, algoConv(img.At(x, y)))
}
}
return grayImg