DISCRETE WAVELET TRANSFORM USING MATLAB

In numerical analysis and functional analysis, a discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled. In this paper, there are given fundamental of DWT and implementation in MATLAB. Image is filtered by low pass (for smooth variation between gray level pixels) and high pass filter (for high variation between gray level pixels). Image is decomposed into multilevel which include approximation details (LL subband), horizontal detail (HL subband), vertical (LH subband) and diagonal details (HH subband).

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