filters

func Binary(file io.Reader, threshold uint8) (io.Reader, string, error)

func BoxBlur(file io.Reader, radius uint) (io.Reader, string, error)

func Brightness(file io.Reader, amount int) (io.Reader, string, error)

func ColorInversion(file io.Reader) (io.Reader, string, error)

func Contrast(file io.Reader, amount int) (io.Reader, string, error)

func EightColors(file io.Reader) (io.Reader, string, error)

func Emboss(file io.Reader) (io.Reader, string, error)

func Flip(file io.Reader, direction string) (io.Reader, string, error)

func GammaCorrection(file io.Reader, amount float64) (io.Reader, string, error)

func GaussianBlur(file io.Reader, sigma float64) (io.Reader, string, error)

func Grayscale(file io.Reader, grayscaleType string) (io.Reader, string, error)

func HueRotate(file io.Reader, angle int) (io.Reader, string, error)

func Kuwahara(file io.Reader, radius uint) (io.Reader, string, error)

func Laplacian(file io.Reader) (io.Reader, string, error)

func RotateFixed(file io.Reader, angle uint) (io.Reader, string, error)

func Sepia(file io.Reader) (io.Reader, string, error)

func Sharpen(file io.Reader, amount uint) (io.Reader, string, error)

func Sobel(file io.Reader) (io.Reader, string, error)

func Solarize(file io.Reader, threshold uint8) (io.Reader, string, error)