vibrant
Extract prominent colors from images. Go port of the Android awesome Palette class aka Vibrant.js.
install
go get github.com/generaltso/vibrant
usage
// example: create css stylesheet from image file
checkErr := func(err error) { if err != nil { panic(err) } }
f, err := os.Open("some_image.jpg")
checkErr(err)
defer f.Close()
img, _, err := image.Decode(f)
checkErr(err)
palette, err := vibrant.NewPaletteFromImage(img)
checkErr(err)
for name, swatch := range palette.ExtractAwesome() {
fmt.Printf("/* %s (population: %d) */\n%s\n\n", name, swatch.Population, swatch)
}output:
/* LightMuted (population: 253) */
.lightmuted{background-color:#cbc0a2;color:#000000;}
/* DarkMuted (population: 11069) */
.darkmuted{background-color:#5b553f;color:#ffffff;}
/* Vibrant (population: 108) */
.vibrant{background-color:#dfd013;color:#000000;}
/* LightVibrant (population: 87) */
.lightvibrant{background-color:#f4ed7d;color:#000000;}
/* DarkVibrant (population: 2932) */
.darkvibrant{background-color:#917606;color:#ffffff;}
/* Muted (population: 4098) */
.muted{background-color:#a58850;color:#000000;}See godoc reference for full API.
bonus round
reference implementation/command line tool
go get github.com/generaltso/vibrant/cmd/vibrant
usage: vibrant [options] file
options:
-compress
Strip whitespace from output.
-css
Output results in CSS.
-json
Output results in JSON.
-lowercase
Use lowercase only for all output. (default true)
-rgb
Output RGB instead of HTML hex, e.g. #ffffff.
webapp
go get github.com/generaltso/vibrant
cd $GOPATH/src/github.com/generaltso/vibrant
go run webapp.go
# open http://localhost:8080/ in a browser
thanks
https://github.com/Infinity/Iris
This Google I/O 2014 presentation