imageutil

func AverageHashDistance(imgA, imgB image.Image) (distance int)

func CropImage(img image.Image, rect image.Rectangle) image.Image

func CropImagePosition(img image.Image, ratio float64, pos float64) image.Image

func DifferenceHashDistance(imgA, imgB image.Image) (distance int)

func PerceptionHashDistance(imgA, imgB image.Image) (distance int)

func Resize(src image.Image, width, height int) image.Image

func Similar(imgA, imgB image.Image) bool

func Watermark(src image.Image, wmk image.Image, pt image.Point) image.Image