avg

Documentation

Overview

Package avg calculates average and stdev of pixels in images.

Index

• func RGBA(img *image.RGBA) ([3]float64, [3]float64)
• func RGBAC(img *image.RGBA) ([3]float64, [3]float64)
• func RGBASlow(img *image.RGBA) ([3]float64, [3]float64)

Functions

func RGBA

func RGBA(img *image.RGBA) ([3]float64, [3]float64)

RGBA computes the pixel average, and average absolute deviation of each pixel, on an RGBA image, per channel. The alpha channel is ignored. Scaled to [0, 1]. Slightly optimized implementation.

func RGBAC

func RGBAC(img *image.RGBA) ([3]float64, [3]float64)

RGBAC computes the pixel average, and average absolute deviation of each pixel, on an RGBA image, per channel. The alpha channel is ignored. Scaled to [0, 1]. Implemented in Cgo.

func RGBASlow

func RGBASlow(img *image.RGBA) ([3]float64, [3]float64)

RGBASlow computes the pixel average, and average absolute deviation of each pixel, on an RGBA image, per channel. The alpha channel is ignored. Scaled to [0, 1]. This a slow implementation useful as ground truth for testing.