ba5566d1a0
* MM-10417 Add local image proxy and enable by default * Remove unused function * Add dependencies for willnorris/imageproxy * Fixed compilation errors * Lock to the master version of willnorris/imageproxy * Fix atmos/camo proxy when no SiteURL is specified * Re-add default values for deprecated settings * Fix unit tests added by merge * Pass imageproxy to App struct * Remove unneeded locking when creating the image proxy * Remove empty test file
smartcrop
smartcrop finds good image crops for arbitrary sizes. It is a pure Go implementation, based on Jonas Wagner's smartcrop.js
Image: https://www.flickr.com/photos/usfwspacific/8182486789 CC BY U.S. Fish & Wildlife
Image: https://www.flickr.com/photos/endogamia/5682480447 by N. Feans
Installation
Make sure you have a working Go environment. See the install instructions.
To install smartcrop, simply run:
go get github.com/muesli/smartcrop
To compile it from source:
cd $GOPATH/src/github.com/muesli/smartcrop
go get -u -v
go build && go test -v
Example
package main
import (
"fmt"
"image"
_ "image/png"
"os"
"github.com/muesli/smartcrop"
)
func main() {
f, _ := os.Open("image.png")
img, _, _ := image.Decode(f)
analyzer := smartcrop.NewAnalyzer()
topCrop, _ := analyzer.FindBestCrop(img, 250, 250)
// The crop will have the requested aspect ratio, but you need to copy/scale it yourself
fmt.Printf("Top crop: %+v\n", topCrop)
type SubImager interface {
SubImage(r image.Rectangle) image.Image
}
croppedimg := img.(SubImager).SubImage(topCrop)
...
}
Also see the test cases in crop_test.go for further working examples.
Sample Data
You can find a bunch of test images for the algorithm here.
Development
API docs can be found here.
Join us on IRC: irc.freenode.net/#smartcrop
