pick.sidelobe: Select an interferogram sidelobe in the Fourier domain

In mlpeck/zernike: Zernike Polynomials

Select an interferogram sidelobe in the Fourier domain

Description

Interactively locate the center of a first order sidelobe in the FFT of an interferogram, and mark the width of the background filter.

Usage

pick.sidelobe(imagedata, logm=FALSE, gamma=3)

Arguments

imagedata	A matrix containing an interferogram image
logm	Logical: pass fn="logMod" to plot.cmat?
gamma	gamma value for display

Details

Uses the basic graphics utility locator.

Value

A list with the following components:

sl	The coordinates c(x,y) of the selected sidelobe
filter	Estimated size of background filter

Note

The high level FFT interferogram analysis routine fftfit requires the approximate location of the intended first order interferogram sidelobe to be specified.

Author(s)

M.L. Peck [e-mail]

See Also

fftfit,

mlpeck/zernike documentation built on April 19, 2024, 3:16 p.m.