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Computational imaging methods that can exploit multiple modalities have the potential to enhance traditional sensing systems. We propose a new method that reconstructs multimodal images from their linear measurements by exploiting redundancies across different modalities. Our method combines a convolutional group-sparse representation of images with total variation regularization. We develop an online algorithm that enables the unsupervised learning of convolutional dictionaries on large-scale datasets. We illustrate the benefit of our approach for joint intensity-depth imaging.
This presentation is part of Minisymposium “MS40 - Recent Advances in Convolutional Sparse Representations”
organized by: Giacomo Boracchi (Politecnico di Milano) , Alessandro Foi (Tampere University of Technology) , Brendt Wohlberg (Los Alamos National Laboratory) .