From Mixtures of Mixtures to Adaptive Transform Coding
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From Mixtures of Mixtures to Adaptive Transform Coding
We establish a principled framework for adaptive transform coding. Transform coders are often constructed by concatenating an ad hoc choice of transform with suboptimal bit allocation and quantizer design. Instead, we start from a probabilistic latent variable model in the form of a mixture of constrained Gaussian mixtures. From this model we derive a transform coding algorithm, which is a cons...
متن کاملSubmitted to NIPS 14 , May 2000 From Mixtures of Mixtures toAdaptive Transform
We establish a principled framework for adaptive transform coding. Transform coders are often constructed by concatenating an ad hoc choice of transform with suboptimal bit allocation and quan-tizer design. Instead, we start from a probabilistic latent variable model in the form of a mixture of constrained Gaussian mixtures. From this model we derive an optimal transform coding algorithm, which...
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تاریخ انتشار 2001