Radially averaged power spectrum of 2D real-valued matrix

Version 1.5.0.0 (2.09 KB) by Evan Ruzanski
Computes and plots radially averaged PSD of 2-D real matrix with a given spatial resolution.
4.4
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6K Downloads
Updated 17 Mar 2011

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The radially averaged power spectrum (RAPS) is the direction-independent mean spectrum, i.e. the average of all possible directional power spectra. The radially averaged power spectrum provides a convenient means to view and compare information contained in 2-D spectra in 1-D. This function computes and plots the RAPS of an input matrix (does not consider corner values outside averaging radius). The image can be rectangular but must be 2-D (e.g., multi-color channel data is not supported). The spatial resolution of the data is also specified.

Cite As

Evan Ruzanski (2024). Radially averaged power spectrum of 2D real-valued matrix (https://www.mathworks.com/matlabcentral/fileexchange/23636-radially-averaged-power-spectrum-of-2d-real-valued-matrix), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2006b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.5.0.0

Clarified restrictions on input to the file description (e.g., multi-channel data from JPG, etc. is not supported)

1.4.0.0

Added feature to handle odd/even dimensionality differences of input matrix
1.3.0.0

Fixed bug in x-axis of plot; preallocated memory for axes label cells; removed minor ticks from y-axis; cleaned up comments.
1.2.0.0

Rectangular matrices can now be input; spatial resolution can be specified.
1.1.0.0

The radially averaged power spectrum provides a convenient means to view and compare information contained in 2D spectra in 1D.

1.0.0.0