Table of Contents
Computers, Volume 8, Issue 2 (June 2019) – 23 articles
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Cover Story (view full-size image) Shadow-retargeting maps depict the appearance of real shadows to virtual shadows given the [...] Read more. Shadow-retargeting maps depict the appearance of real shadows to virtual shadows given the corresponding deformation of scene geometry, such that appearance is seamlessly maintained. By performing virtual shadow reconstruction from unoccluded real-shadow samples observed in the camera frame, this method efficiently recovers deformed shadow appearance. In this manuscript, we introduce a light-estimation approach that enables light-source detection using flat Fresnel lenses that allow this method to work without a set of pre-established conditions. Results are presented on a range of objects, deformations, and illumination conditions in real-time augmented reality (AR) on a mobile device. We demonstrate the practical application of the method in generating otherwise laborious inbetweening frames for 3D-printed stop-motion animation. View this paper.