imager (version 0.42.19)

periodic.part: Compute the periodic part of an image, using the periodic/smooth decomposition of Moisan (2011)

Description

Moisan (2011) defines an additive image decomposition im = periodic + smooth where the periodic part shouldn't be too far from the original image. The periodic part can be used in frequency-domain analyses, to reduce the artifacts induced by non-periodicity.

Usage

periodic.part(im)

Value

an image

Arguments

im

an image

Author

Simon Barthelme

References

L. Moisan, Periodic plus Smooth Image Decomposition,J. Math. Imaging Vision, vol. 39:2, pp. 161-179, 2011

Examples

im <- load.example("parrots") %>% subim(x <= 512)
layout(t(1:3))
plot(im,main="Original image")
periodic.part(im) %>% plot(main="Periodic part")
#The smooth error is the difference between
#the original image and its periodic part
(im-periodic.part(im)) %>% plot(main="Smooth part")