Rotating Kernel Transformation (Lee & Rhodes)

Version 1.0.0.0 (169 KB) von Florian Bazant-Hegemark
Filter emphasising the shape of the kernel (eg straight line) within an image
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Aktualisiert 18. Mai 2007

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The Rotating Kernel Transformation convolves an image with several orientations of a kernel.
For a line-kernel, straight lines are emphasized. For larger kernels, it becomes computationally expensive.

The zip-archive contains 5 files:
1) rktfilt.m ... function for filtering
2) rktkern.m ... for creating a kernel
3) rkttest.m ... script for testing the example
4) rktexample.mat ... sample image
5) example.png ... example screenshot

Please use
'help rktfilt' or 'doc rktfilt',
'help rktkern' or 'doc rktkern'
for help.

Reference:
Lee Y-K, Rhodes WT:
"Nonlinear image processing by a rotating kernel transformation"
Optics Letters, Vol. 15, No. 23, pp. 1383-1385, 1990.

Zitieren als

Florian Bazant-Hegemark (2025). Rotating Kernel Transformation (Lee & Rhodes) (https://de.mathworks.com/matlabcentral/fileexchange/14977-rotating-kernel-transformation-lee-rhodes), MATLAB Central File Exchange. Abgerufen.

Kompatibilität der MATLAB-Version
Erstellt mit R12.1
Kompatibel mit allen Versionen
Plattform-Kompatibilität
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Version Veröffentlicht Versionshinweise
1.0.0.0

2 changes to rktfilt.m
1) Convert input to double
-> gets rid of warnings on Matlab 7 versions
2) Use imfilter instead of conv2
-> Quicker

Update inspired by File ID 14995