fourier descriptor
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
Citar como
michael scheinfeild (2024). fourier descriptor (https://www.mathworks.com/matlabcentral/fileexchange/26810-fourier-descriptor), MATLAB Central File Exchange. Recuperado .
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1.0.0.0 |