UDC 519.2
THRESHOLD-FREE METHOD OF DISCRETE WAVELET FILTRATION OF IMAGES
Abstract. Modern methods and algorithms for DWT image filtering from high-level Gaussian noise are considered. It is indicated that these noises can occur during aerial photography under air pollution conditions. The use of a single universal threshold for limiting VisuShrink wavelet coefficients for all levels of decomposition and an adaptive BayesShrink threshold are considered. An algorithm for limiting the tuple of image wavelet coefficients is developed.
Keywords: DWT, VisuShrink, BayesShrink, algorithm, Euclidean norm, wavelet coefficient tuple.
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