effects

Documentation

Index

• func EmbossGray(img *image.Gray) (*image.Gray, error)
• func EmbossRGBA(img *image.RGBA) (*image.Gray, error)
• func InvertGray(img *image.Gray) *image.Gray
• func InvertRGBA(img *image.RGBA) *image.RGBA
• func PixelateGray(img *image.Gray, factor float64) (*image.Gray, error)
• func PixelateRGBA(img *image.RGBA, factor float64) (*image.RGBA, error)
• func Sepia(img *image.RGBA) *image.RGBA
• func SharpenGray(img *image.Gray) (*image.Gray, error)
• func SharpenRGBA(img *image.RGBA) (*image.RGBA, error)

Functions

func EmbossGray

func EmbossGray(img *image.Gray) (*image.Gray, error)

EmbossGray takes a grayscale image and returns a copy of the image in which each pixel has been replaced either by a highlight or a shadow representation.

func EmbossRGBA

func EmbossRGBA(img *image.RGBA) (*image.Gray, error)

EmbossRGBA takes an RGBA image and returns a grayscale image in which each pixel has been replaced either by a highlight or a shadow representation.

func InvertGray

func InvertGray(img *image.Gray) *image.Gray

InvertGray takes a grayscale image and return its inverted grayscale image.

func InvertRGBA

func InvertRGBA(img *image.RGBA) *image.RGBA

InvertRGBA takes an RGBA image and return its inverted RGBA image.

func PixelateGray

func PixelateGray(img *image.Gray, factor float64) (*image.Gray, error)

PixelateGray enlarges the pixels of a grayscale image. The factor value specifies how much should be the pixels enlarged. Example of usage:

res, err := effects.PixelateGray(img, 5.0)

func PixelateRGBA

func PixelateRGBA(img *image.RGBA, factor float64) (*image.RGBA, error)

PixelateRGBA enlarges the pixels of a RGBA image. The factor value specifies how much should be the pixels enlarged. Example of usage:

res, err := effects.PixelateRGBA(img, 5.0)

func Sepia

func Sepia(img *image.RGBA) *image.RGBA

Sepia applies Sepia tone to an RGBA image.

func SharpenGray

func SharpenGray(img *image.Gray) (*image.Gray, error)

SharpenGray takes a grayscale image and returns another grayscale image where each edge is added to the original image.

func SharpenRGBA

func SharpenRGBA(img *image.RGBA) (*image.RGBA, error)

SharpenRGBA takes an RGBA image and returns another RGBA image where each edge is added to the original image.