imager (version 0.45.8)

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

cimg.limit.openmp()
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