func averageFaces(numFaces int) image.Image {
filePattern := "static/img/orl_faces/%v.png"
filenames := make([]string, numFaces)
for i := 0; i < numFaces; i++ {
filenames[i] = fmt.Sprintf(filePattern, i+1)
}
avgFace := faceimage.AverageFaces(filenames)
return faceimage.ToImage(avgFace)
}
func saveImage(face eigenface.FaceVector, path string) {
img := faceimage.ToImage(face)
out, err := os.Create(path)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
err = png.Encode(out, img)
}