convert an RGB image to Gray

convert an RGB image to Gray

Usage

rgb_2gray(RGB_image)

Arguments

RGB_image

a 3-dimensional array where the third dimension is equal to 3

Value

a matrix

Details

This function converts an RGB image to gray

Author

Lampros Mouselimis

Examples

path = system.file("tmp_images", "1.png", package = "OpenImageR")

image = readImage(path)

gray = rgb_2gray(image)