greyscale

Documentation

Overview

Package greyscale implements various functions to convert an image to greyscale.

Index

• Variables
• func AverageC() utils.Composable
• func BlueC() utils.Composable
• func GreenC() utils.Composable
• func GreyscaleC() utils.Composable
• func LightnessC() utils.Composable
• func LuminosityC() utils.Composable
• func MaximalC() utils.Composable
• func MinimalC() utils.Composable
• func RedC() utils.Composable

Variables

var Average = utils.Map(AverageC)

Average creates a greyscale version of the Image using the average method; it simply averages the RGB values.

var Blue = utils.Map(BlueC)

Blue creates a greyscale version of the Image using the values of the blue channel.

var Green = utils.Map(GreenC)

Green creates a greyscale version of the Image using the values of the green channel.

var Greyscale = utils.Map(GreyscaleC)

Greyscale creates a greyscale version of the Image by using a mixture of the colour channels. It accounts for human sensitivity to green above other colours by weighting the amount mixed in.

var Lightness = utils.Map(LightnessC)

Lightness creates a grayscale version of the Image using the lightness method. That is, it averages the most prominent and least prominent colours.

var Luminosity = utils.Map(LuminosityC)

Luminosity creates a greyscale version of the Image using a different weighting from the Default method.

var Maximal = utils.Map(MaximalC)

Maximal creates a greyscale version of the Image by taking the maximum of the RGB channels and using that value for each channel. Produces a lighter image.

var Minimal = utils.Map(MinimalC)

Minimal creates a greyscale version of the Image by taking the minimum value of the RGB channels and using that for each channel. Produces a darker image.

var Red = utils.Map(RedC)

Red creates a greyscale version of the Image using the values of the red channel.

Functions

func AverageC

func AverageC() utils.Composable

func BlueC

func BlueC() utils.Composable

func GreenC

func GreenC() utils.Composable

func GreyscaleC

func GreyscaleC() utils.Composable

func LightnessC

func LightnessC() utils.Composable

func LuminosityC

func LuminosityC() utils.Composable

func MaximalC

func MaximalC() utils.Composable

func MinimalC

func MinimalC() utils.Composable

func RedC

func RedC() utils.Composable