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Realistic and Detail Rendering of Village Virtual Scene Based on Pixel Offset

文献类型： 外文期刊

作者： Zhao, Chunjiang 1 ; Wu, Huarui 1 ; Gao, Ronghua 1 ;

作者机构： 1.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China; Minist Agr, Key Lab Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Realistic; bump mapping; parallax mapping; pixel offset; virtual scene

期刊名称：APPLIED MATHEMATICS & INFORMATION SCIENCES （ 影响因子：1.232； 五年影响因子：1.204 ）

ISSN： 1935-0090

年卷期： 2012 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Many complex detail objects in the village virtual scene are important to the photo-realistic rendering technology. Bump mapping, normal mapping and parallax mapping have a capability to represent the realistic rendering by disturbing normal vector or shifting the texture coordinates along the view direction. However, an incorrect offset will lead to the sliding phenomenon in the detail rendering. In this paper, a corresponding relation between the offset and the current viewpoint is proposed by establishing mathematics function of the detail image pixel coordinates and the height values. Furthermore, the new pixel offset is calculated by using GPU technology. With GPU technology, sliding phenomenon does not appear when the viewpoint changes. Thus, the detail objects have the realistic effect in village virtual scene. The experimental results demonstrate that this proposed method has achieved better performance in representing the realistic and detail rendering than traditional methods of parallax mapping and texture coordinate offset correction with GPU technology.

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