发明申请
- 专利标题: Real-time precision ray tracing
- 专利标题(中): 实时精确光线跟踪
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申请号: US11474517申请日: 2006-06-23
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公开(公告)号: US20070024615A1公开(公告)日: 2007-02-01
- 发明人: Alexander Keller , Carsten Waechter
- 申请人: Alexander Keller , Carsten Waechter
- 主分类号: G06T15/40
- IPC分类号: G06T15/40
摘要:
Systems and techniques are described for ray tracing and for the efficient construction of acceleration data structures required for fast ray tracing. A computer graphics system generates, for each pixel in an image, a pixel value that is representative of a point in a scene as recorded on an image plane of a simulated camera. The computer graphics system is configured to generate the pixel value for an image using a selected ray-tracing methodology. The selected ray-tracing methodology includes the use of a ray tree that includes at least one ray shot from the pixel into a scene along a selected direction. The ray-tracing methodology further includes calculating the intersections of rays and surfaces in the scene. An axis-aligned bounding box is defined that contains, for a given ray, the point of intersection of the ray and surface nearest the origin of the ray. The bounding box is iteratively refined until a predetermined termination criterion has been met.
公开/授权文献
- US07499053B2 Real-time precision ray tracing 公开/授权日:2009-03-03