Elliptical Fourier shape descriptors

Version 1.0.0.0 (3,66 KB) von David Thomas
Forward and reverse elliptical Fourier transforms of x,y data
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Aktualisiert 23. Okt 2006

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These two functions impliment the system of elliptical Fourier shape descriptors first described by Kuhl and Giardina in "Elliptic Fourier features of a closed contour" Computer Graphics and Image Processing 18:236-258 1982. fEfourier is the forward transform which creates a "shape spectrum" of a closed x,y outline, rEfourier takes a specified number of harmonics from the spectrum and reconstructs the x,y outline. The functions are not only useful for the creation of shape descriptors but also for smoothing outlines or reducing an arbitrary outline to a specified number of points.

Zitieren als

David Thomas (2024). Elliptical Fourier shape descriptors (https://www.mathworks.com/matlabcentral/fileexchange/12746-elliptical-fourier-shape-descriptors), MATLAB Central File Exchange. Abgerufen.

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Erstellt mit R2006a
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Version Veröffentlicht Versionshinweise
1.0.0.0