fourier descriptor

Version 1.0.0.0 (2.26 KB) by michael scheinfeild
describe shape using fourier coefficients
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Updated 1 Mar 2010

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shape description using FD fourier coeeficeients used for shape classification.
the steps :
1 . find the indexes borders of edged image (input binary edged image see test for example)
2. sort the indexes so they in distance order
3. make complex vecotr x+jy
4 make fft
5 take first FD
6. make ifft

currently the algorithm works for only symmetrical shapes !!!
i promise to improve it for all the shapes

link to theory :
http://www.tsi.enst.fr/tsi/enseignement/ressources/mti/descript_fourier/Part1.html

http://www.tsi.enst.fr/tsi/enseignement/ressources/mti/descript_fourier/Part2.html

Cite As

michael scheinfeild (2024). fourier descriptor (https://www.mathworks.com/matlabcentral/fileexchange/26810-fourier-descriptor), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14
Compatible with any release
Platform Compatibility
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Version Published Release Notes
1.0.0.0