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Author:

汪友生 (汪友生.) | 夏章涛 (夏章涛.) | 高雪 (高雪.)

Indexed by:

incoPat

Abstract:

本发明公开了一种基于梯度采样的光线跟踪体绘制方法,针对蒙特卡洛光线追踪计算量巨大的性能缺陷,以及Woodcock Tracking采样对光线采样过程中采样点分布的不合理性,使用三维Sobel算子选用26邻域体素计算体数据梯度,用于刻画体数据在不同区域变化的剧烈程度,在Woodcock Tracking采样中引入梯度比重项,最后再对最终颜色合成上添加权重系数以确保算法的无偏性,本发明使得原有的采样点分布仅有消光系数决定,改进为由消光系数和梯度共同决定,使得光线采样点的分布更为合理,在体数据变化平缓的区域有较少的采样点,在变化剧烈的区域有更多的采样点,从而能够有效提升蒙特卡洛光线追踪的渲染速度和渲染质量。

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Patent Info :

Type: 发明授权

Patent No.: CN201911338632.8

Filing Date: 2019-12-23

Publication Date: 2023-09-29

Pub. No.: CN111080765B

Applicants: 北京工业大学

Legal Status: 授权

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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