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Subject: Computer Science
Title:
基于自适应分割的动态面光源图像空间绘制
Alternative Title: adaptive image-space rendering by dynamic area light source
Author: 刘洋 ; 刘学慧 ; 吴恩华
Keyword: adaptive space voxelization ; image space ; dynamic area lighting ; graphic processing unit ; real-time rendering
Source: Computer Engineering and Design
Issued Date: 2012
Volume: 33, Issue:2, Pages:624-629
Department: 刘洋, 中国科学院软件研究所, 计算机科学国家重点实验室, 北京 100190, 中国. 刘学慧, 中国科学院软件研究所, 计算机科学国家重点实验室, 北京 100190, 中国. 吴恩华, 中国科学院软件研究所, 计算机科学国家重点实验室, 北京 100190, 中国.
Abstract: 针对图像空间绘制技术中可见性积分的计算不能达到实时,并且无法捕捉由面光源上辐射度变化引起的着色点亮度变化这两个问题,提出了一种基于自适应的空间划 分技术的、在图像空间中对动态面光源效果进行绘制的方法。该方法将场景中的物体根据深度及分布情况,自适应地划分为非均匀的体素,同时构建场景中深度和法 向变化量的多级纹理,并利用存储在这些体素和纹理中的信息对着色点进行快速的可见性积分和相应的光照度计算。
English Abstract: In the image space rendering,the visibility integration computation is unable to be performed in real time,and the illumination variance caused by the diffuse light change of area light sources is also unable to be expressed.To tackle the problems,a new image space area lighting algorithm is proposed using adaptive space voxelization.According to the depth distribution,the algorithm adaptively partitions the scene to non-uniform voxels,and constructs the depth and normal variance stored in mipmap.By using the information,the algorithm can be applied to interactively compute the visibility integration and illumination approximation for every shading point.
Language: 中文
Content Type: 期刊论文
URI: http://ir.iscas.ac.cn/handle/311060/14653
Appears in Collections:计算机科学国家重点实验室 _期刊论文

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Recommended Citation:
刘洋,刘学慧,吴恩华. 基于自适应分割的动态面光源图像空间绘制[J]. Computer Engineering and Design,2012-01-01,33(2):624-629.
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