Clustering Environment Lights for an Efficient All-Frequency Relighting(Computer Graphics)

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概要

• 論文の詳細を見る

• We present a novel precomputed radiance transfer method for efficient relighting under all-frequency environment illumination. Environment illumination is represented as a set of environment lights. Each environment light comprises a direction and an intensity. In a preprocessing step, the environment lights are clustered into several clusters, taking into account only the light directions. By experiment, we confirmed that the environment lights can be clustered into a much smaller number of clusters than their original number. Given any environment illumination, sampled as an environment map, an efficient relighting is then achieved by computing the radiance using the precomputed clusters. The proposed method enables relighting under very high-resolution environment illumination. In addition, unlike previous approaches, the proposed method can efficiently perform relighting when some regions of the given environment illumination change.

• 社団法人電子情報通信学会の論文
• 2006-09-01

著者

• Nishita Tomoyuki

  Graduate School Of Frontier Science The University Of Tokyo

• Nishita Tomoyuki

  University Of Tokyo

• Johan Henry

  Nanyang Technological Univ.

• JOHAN Henry

  University of Tokyo

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