Computationally Efficient Wavelet Affine Invariant Functions for Shape Recognition

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Erdem Bala, A. Enis Çetin

Published: 2004, Last Modified: 27 Feb 2026IEEE Trans. Pattern Anal. Mach. Intell. 2004EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: An affine invariant function for object recognition is constructed from wavelet coefficients of the object boundary. In previous works, undecimated dyadic wavelet transform was used to construct affine invariant functions. In this paper, an algorithm based on decimated wavelet transform is developed to compute an affine invariant function. As a result computational complexity is reduced without decreasing recognition performance. Experimental results are presented.