Estimation of Optimal Threshold Values in Algorithms of Wavelet Filtration of Images
Y. E. Voskoboinikov1, A. V. Gochakov2
1 Novosibirsk State University of Architecture and Civil Engineering
2 Novosibirsk State University of Architecture and Civil Engineering Siberian Regional Hydrometeorological Institute
voscob@mail.ru
Keywords: filtration of images, locally spatial filters, wavelet filtration
Pages: 3-14
Abstract
A new algorithm is proposed for estimating optimal threshold values in thresholding algorithms of wavelet filtration of signals and images. Numerous computational experiments are performed to compare this threshold with threshold values widely used in wavelet filtration algorithms. Application of the proposed threshold is demonstrated to ensure substantial reduction of the filtration error of both smooth and high-contrast images.
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