Light source estimation in mobile augmented reality scenes by using human face geometry
Koç, Emre and Balcısoy, Selim (2014) Light source estimation in mobile augmented reality scenes by using human face geometry. IEICE Transactions on Information and Systems, E97-D (8). pp. 1974-1982. ISSN 0916-8532 (Print) 1745-1361 (Online)
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Light source estimation and virtual lighting must be believable in terms of appearance and correctness in augmented reality scenes. As a result of illumination complexity in an outdoor scene, realistic lighting for augmented reality is still a challenging problem. In this paper, we propose a framework based on an estimation of environmental lighting from well-defined objects, specifically human faces. The method is tuned for outdoor use, and the algorithm is further enhanced to illuminate virtual objects exposed to direct sunlight. Our model can be integrated into existing mobile augmented reality frameworks to enhance visual perception.
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