Image Based Proximate Shadow Retargeting
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We introduce Shadow Retargeting which maps real shadow appearance to virtual shadows given a corresponding deformation of scene geometry, such that appearance is seamlessly maintained. By performing virtual shadow reconstruction from un-occluded real shadow samples observed in the camera frame, we recover the deformed shadow appearance efficiently. Our method uses geometry priors for the shadow casting object and a planar receiver surface. Inspired by image retargeting approaches [VTP10] we describe a novel local search strategy, steered by importance based deformed shadow estimation. 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 in-betweening frames for 3D printed stop motion animation.
Description
@inproceedings{10.2312:cgvc.20181206,
booktitle = {Computer Graphics and Visual Computing (CGVC)},
editor = {{Tam, Gary K. L. and Vidal, Franck},
title = {{Image Based Proximate Shadow Retargeting}},
author = {Casas, Llogari and Fauconneau, Matthias and Kosek, Maggie and Mclister, Kieran and Mitchell, Kenny},
year = {2018},
publisher = {The Eurographics Association},
ISBN = {978-3-03868-071-0},
DOI = {10.2312/cgvc.20181206}
}