37-Issue 7

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Light Optimization for Detail Highlighting
(The Eurographics Association and John Wiley & Sons Ltd., 2018) Gkaravelis, Anastasios; Papaioannou, Georgios; Fu, Hongbo and Ghosh, Abhijeet and Kopf, Johannes
In this paper we propose an effective technique for the automatic arrangement of spot lights and other luminaires on or near user-provided arbitrary mounting surfaces in order to highlight the geometric details of complex objects. Since potential applications include the lighting design for exhibitions and similar installations, the method takes into account obstructing geometry and potential occlusion from visitors and other non-permanent blocking geometry. Our technique generates the most appropriate position and orientation for light sources based on a local contrast maximization near salient geometric features and a clustering mechanism, producing consistent and view-independent results, with minimal user intervention. We validate our method with realistic test cases including multiple and disjoint exhibits as well as high occlusion scenarios.