Bala, E.Çetin, A. Enis2016-02-082016-02-0820040162-8828http://hdl.handle.net/11693/24244An 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. © 2004 IEEE.EnglishAlgorithmsApproximation theoryComputational complexityComputer simulationCorrelation methodsImage analysisMatrix algebraWavelet transformsAffine transformationComputational efficiencyDecimated wavelet transformShape recognitionObject recognitionArticle10.1109/TPAMI.2004.39