ripa (version 2.0-1)

rgb2grey: Convert color imagematrix to grey imagematrix

Description

This function convert color imagematrix to grey imagematrix.

Usage

rgb2grey(img, coefs=c(0.30, 0.59, 0.11))

Arguments

img

target image

coefs

coefficients for red plane, green plane, and blue plane.

Value

• grey imagematrix

Examples

x <- read.jpeg(system.file("extdata", "Rlogo.jpg", package="ripa"))
  plot(rgb2grey(x))