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- W2113042203 abstract "This paper presents a novel method to estimate multiple illuminant directions from a single image in augmented reality system. A square marker is used for 2D-3D registration, and a mirror sphere with known size is employed to detect light sources. Highlight pixels in captured sphere image are analyzed by using c-means clustering algorithm and its initialization with max-min distance method. The initialization estimates number of light sources and initial highlight areas centroids. c-means algorithm optimizes each position of the centroids. With the help of registration, multiple illuminant directions are calculated from the centroids and user’s viewpoint. Moreover, a self-correction course reduces estimation errors. Experimental results show that our approach is computationally efficient and multiple illuminant directions can be accurately obtained by it." @default.
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- W2113042203 date "2009-01-01" @default.
- W2113042203 modified "2023-09-26" @default.
- W2113042203 title "Efficient Estimation of Multiple Illuminant Directions Using C-means Clustering and Self-correction for Augmented Reality" @default.
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- W2113042203 doi "https://doi.org/10.1109/icis.2009.40" @default.
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