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We introduce visual deprojection: the task of recovering an image or video that has been collapsed along a dimension. Projections arise in various contexts, such as longexposure photography, where a dynamic scene is collapsed in time to produce a motion-blurred image, and corner cameras, where reflected light from a scene is collapsed along a spatial dimension because of an edge occluder to yield a 1D video. Deprojection is ill-posed-often there are many plausible solutions for a given input.doi:10.1109/iccv.2019.00026 dblp:conf/iccv/BalakrishnanDZG19 fatcat:xvtumva7xjb7hgfzp7ix2mxywa