Invention Application
US20100188396A1 Updating Ray Traced Acceleration Data Structures Between Frames Based on Changing Perspective
有权
基于不断变化的视角,更新帧之间的光线跟踪加速数据结构
- Patent Title: Updating Ray Traced Acceleration Data Structures Between Frames Based on Changing Perspective
- Patent Title (中): 基于不断变化的视角,更新帧之间的光线跟踪加速数据结构
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Application No.: US12361019Application Date: 2009-01-28
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Publication No.: US20100188396A1Publication Date: 2010-07-29
- Inventor: Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
- Applicant: Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Main IPC: G06T15/00
- IPC: G06T15/00

Abstract:
A method, program product and system for conducting a ray tracing operation where the rendering compute requirement is reduced or otherwise adjusted in response to a changing vantage point. Aspects may update or reuse an acceleration data structure between frames in response to the changing vantage point. Tree and image construction quality may be adjusted in response to rapid changes in the camera perspective. Alternatively or additionally, tree building cycles may be skipped. All or some of the tree structure may be built in intervals, e.g., after a preset number of frames. More geometric image data may be added per leaf node in the tree in response to an increase in the rate of change. The quality of the rendering algorithm may additionally be reduced. A ray tracing algorithm may decrease the depth of recursion, and generate fewer cast and secondary rays. The ray tracer may further reduce the quality of soft shadows, resolution and global illumination samples, among other quality parameters. Alternatively, tree rebuilding may be skipped entirely in response to a high camera rate of change. Associated processes may create blur between frames to simulate motion blur.
Public/Granted literature
- US08350846B2 Updating ray traced acceleration data structures between frames based on changing perspective Public/Granted day:2013-01-08
Information query
IPC分类:
G | 物理 |
G06 | 计算;推算或计数 |
G06T | 一般的图像数据处理或产生 |
G06T15/00 | 3D〔三维〕图像的加工 |