Ko, Young JunSeeger, Matthias2012-05-172012-05-172012-05-172012https://infoscience.epfl.ch/handle/20.500.14299/80515Natural image statistics exhibit hierarchical dependencies across multiple scales. Representing such prior knowledge in non-factorial latent tree models can boost performance of image denoising, inpainting, deconvolution or reconstruction substantially, beyond standard factorial ``sparse'' methodology. We derive a large scale approximate Bayesian inference algorithm for linear models with non-factorial (latent tree-structured) scale mixture priors. Experimental results on a range of denoising and inpainting problems demonstrate substantially improved performance compared to MAP estimation or to inference with factorial priors.Variational Approximate InferenceStructured Scale Mixture ModelsWavelet Hidden Markov TreesInpaintingDenoisingtext::conference output::conference proceedings::conference paper