gamma

Documentation

Overview

Package gamma implements functions to adjust the gamma of an image.

Index

• func Adjust(img image.Image, value float64) image.Image
• func AdjustC(value float64) utils.Composable
• func Auto(img image.Image) image.Image

Functions

func Adjust

func Adjust(img image.Image, value float64) image.Image

Adjusts the gamma of the Image by the given value. A value less than 1.0 darkens the image, whilst a gamma of greater than 1.0 lightens an image.

func AdjustC

func AdjustC(value float64) utils.Composable

func Auto

func Auto(img image.Image) image.Image

Auto calculates the mean values of an image, then applies a gamma adjustment so that the mean colour in the image has a value of half.