Differential Photon Mapping - Consistent Augmentation of Photographs with Correction of all Light Paths

Grosch, Thorsten

Differential Photon Mapping - Consistent Augmentation of Photographs with Correction of all Light Paths

dc.contributor.author	Grosch, Thorsten	en_US
dc.contributor.editor	John Dingliana and Fabio Ganovelli	en_US
dc.date.accessioned	2015-07-19T16:45:12Z
dc.date.available	2015-07-19T16:45:12Z
dc.date.issued	2005	en_US
dc.description.abstract	Augmenting images with consistent lighting is possible with differential rendering. This composition technique requires two lighting simulations, one simulation with only real geometry and another one with additional virtual objects. The difference of the two simulations can be used to modify the original pixel colors. The main drawback of differential rendering is that not all modified light paths can be displayed: The result of the lighting simulation is visible in a reflective object instead of the real environment, augmented with virtual objects. Moreover, many regions in the photograph remain unchanged and the same work is done twice without any visual effect. In this paper we present a new approach for augmenting a photograph with only a single photon mapping simulation. The changes in lighting introduced by a virtual object are directly simulated using a differential photon map. All light paths intersecting the virtual object are corrected. To demonstrate the correctness of our approach, we compare our simulation results with real photographs.	en_US
dc.description.sectionheaders	Images and Video	en_US
dc.description.seriesinformation	EG Short Presentations	en_US
dc.identifier.doi	10.2312/egs.20051022	en_US
dc.identifier.pages	53-56	en_US
dc.identifier.uri	https://doi.org/10.2312/egs.20051022	en_US
dc.publisher	The Eurographics Association	en_US
dc.title	Differential Photon Mapping - Consistent Augmentation of Photographs with Correction of all Light Paths	en_US