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Fourier Encoding of Closed Planar Boundaries

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2 Author(s)
Zabele, G.Stephen ; Department of Electrical and Computer Engineering, Clarkson University, Potsdam, NY 13676. ; Koplowitz, Jack

A circular Gaussian autoregressive (CGAR) source is used as a model for closed planar curves. A class of suboptimal encoding schemes is considered which separately quantize the Fourier coefficients of the boundary. Application of rate-distortion theoretic techniques leads to parametric equations describing the optimal encoding bound. Interpretation of these equations establishes a sampling criterion and a computationally efficient transform encoding scheme for the suboptimal class. Several variants of this transform encoding scheme are suggested and compared to the encoding bound.

Published in:

Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:PAMI-7 ,  Issue: 1 )

Date of Publication:

Jan. 1985

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