Wavelet algorithm commonly used Gaussian distribution model, that the image of the wavelet coefficients to approximate a Gaussian distribution, in fact, the high-frequency wavelet coefficients of the image has a peak near zero, and has a long tail characteristic [7]

The wavelet algorithm commonly used widely used gaussian model, that image of the small wave factor Gaussian approximation to obey, and in fact the image in high-frequency wavelet coefficient near zero point with spikes, and with a long tail characteristics [ 7],

The commonly used wavelet algorithm uses the Gaussian distribution model generally, namely thought the image the wavelet coefficient obeys the Gaussian distribution approximately, in fact the image high frequency wavelet coefficient has the peak nearby the zero, and has long trailing characteristic

Common Gaussian distribution models commonly used by Wavelet algorithm, image Wavelet coefficients of approximate subject to a Gaussian distribution is considered, in fact, high frequency Wavelet coefficients in image zero point near the peak, and has the longest tail characteristics [7],

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