EM ALGORITHM FOR ESTIMATING THE NOISE DEVIATION OF THE IMAGE IN THE WAVELET DOMAIN
Zhe Lin · JOURNAL OF INFRARED AND MILLIMETER WAVES · 2001
A new method was proposed to estimate noisy image’s quality. This approach uses Gaussian mixture model to simulate the histogram of the highest subband’s coefficients in the wavelet domain. The parameters of this model can be calculated by EM algorithm. The smallest deviation of the Gaussian mixture model is selected as the noise deviation. The authors' proposed method can provide better result than the other traditional ones.