標題: Adaptive sampling approach for volumetric shadows in dynamic scenes
作者: Lin, Hsiang-Yu
Chang, Chin-Chen
Tsai, Yu-Ting
Way, Der-Lor
Shih, Zen-Chung
多媒體工程研究所
Institute of Multimedia Engineering
關鍵字: rendering (computer graphics);adaptive sampling approach;volumetric shadows;dynamic scenes;ray marching;volumetric lighting;shadow volumes;stencil buffer;screen pixels;visual quality;rendering
公開日期: 1-十一月-2013
摘要: Ray marching is an important technique to generate volumetric lighting effects. However, it is very expensive for each pixel on the screen, especially in dynamic scenes. The authors propose an adaptive approach to reduce samples for volumetric shadows in the time domain. In dynamic scenes, shadow volumes of moving objects are created and are rasterised to decide pixels that cannot be reused. The authors use a stencil buffer to maintain the information of screen pixels by recomputing or just using the previous information. Experimental results show that the proposed approach is simple to implement. Moreover, compared to the previous method, the proposed approach achieves a specific speedup and maintains similar visual quality.
URI: http://dx.doi.org/10.1049/iet-ipr.2013.0067
http://hdl.handle.net/11536/23472
ISSN: 1751-9659
DOI: 10.1049/iet-ipr.2013.0067
期刊: IET IMAGE PROCESSING
Volume: 7
Issue: 8
起始頁: 762
結束頁: 767
顯示於類別:期刊論文


文件中的檔案:

  1. 000328066400006.pdf