imager (version 0.42.19)

imnoise: Generate (Gaussian) white-noise image

Description

A white-noise image is an image where all pixel values are drawn IID from a certain distribution. Here they are drawn from a Gaussian.

Usage

imnoise(x = 1, y = 1, z = 1, cc = 1, mean = 0, sd = 1, dim = NULL)

Value

a cimg object

Arguments

x

width

y

height

z

depth

cc

spectrum

mean

mean pixel value (default 0)

sd

std. deviation of pixel values (default 1)

dim

dimension vector (optional, alternative to specifying x,y,z,cc)

Author

Simon Barthelme

Examples

imnoise(100,100,cc=3) %>% plot(main="White noise in RGB")
imnoise(100,100,cc=3) %>% isoblur(5) %>% plot(main="Filtered (non-white) noise")
imnoise(dim=dim(boats)) #Noise image of the same size as the boats image