effect

Documentation

Overview

Package effect provides the functionality to manipulate images to achieve various looks.

Index

• func EdgeDetection(src image.Image, radius float64) *image.RGBA
• func Emboss(src image.Image) *image.RGBA
• func Grayscale(img image.Image) *image.Gray
• func Invert(src image.Image) *image.RGBA
• func Median(img image.Image, size int) *image.RGBA
• func Sharpen(src image.Image) *image.RGBA
• func Sobel(src image.Image) *image.RGBA

Functions

func EdgeDetection

func EdgeDetection(src image.Image, radius float64) *image.RGBA

EdgeDetection returns a copy of the image with it's edges highlighted.

func Emboss

func Emboss(src image.Image) *image.RGBA

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

func Grayscale

func Grayscale(img image.Image) *image.Gray

Grayscale returns a copy of the image in Grayscale using the weights 0.3R + 0.6G + 0.1B as a heuristic.

func Invert

func Invert(src image.Image) *image.RGBA

Invert returns a negated version of the image.

func Median

func Median(img image.Image, size int) *image.RGBA

Median returns a new image in which each pixel is the median of it's neighbors. Size sets the amount of neighbors to be searched.

func Sharpen

func Sharpen(src image.Image) *image.RGBA

Sharpen returns a sharpened copy of the image by detecting it's edges and adding it to the original.

func Sobel

func Sobel(src image.Image) *image.RGBA

Sobel returns an image emphasising edges using an approximation to the Sobel–Feldman operator.