Wavelet-domain HMT models the dependencies of multiscale wavelet coefficients through the state probabilities of the wavelet coefficients,whose distribution densities can be approximated by the Gaussian mixture model.
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- 小波域隱馬爾可夫樹(shù)(HMT)模型采用混合高斯模型刻畫(huà)各子帶系數的概率分布;并通過(guò)小波系數隱狀態(tài)在多個(gè)尺度之間的Markov依賴(lài)性來(lái)刻畫(huà)自然圖像小波系數隨尺度呈指數衰減的特性.