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| 用SURE引导自适应采样与采样颜色直方图重构 | |
| Alternative Title | Adaptive Sampling Guided by SURE and Sample Color Histogram Reconstruction |
| 袁红亮; 吴付坤; 郑昌文 | |
| 2016 | |
| Source | 计算机辅助设计与图形学学报
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| ISSN | 1003-9775 |
| Volume | 28Issue:4Pages:533-539 |
| English Abstract | 针对现有采样颜色直方图重构缺少自适应采样方法的问题, 提出一种基于Stein's unbiased risk estimator(SURE)的像素均方误差计算方法. 首先对图像空间粗采样; 然后在GPU上分块计算SURE来评估图像每个像素的误差度量值, 并用该值引导非均匀自适应采样; 最后使用非局部多尺度滤波方法重构图像. 实验结果表明, 不论从图像噪声定量化指标还是视觉效果来看, 该方法都极大地改进了图像绘制质量. |
| Indexed Type | CSCD |
| Abstract | We present an approach for computing pixel-wise mean squared error based on Stein's unbiased risk estimator (SURE), to perform adaptive sampling for histogram-based sample reconstruction in Monte Carlo path tracing. Firstly, the image space is coarsely sampled; then we compute SURE on GPU by block estimates error metric of each pixel, to guide subsequent non-uniform adaptive sampling. Finally, nonlocal multi-scale filtering is used to reconstruct image. The experimental results demonstrate substantial improvements in terms of both numerical error and visual quality. |
| Keyword | Gpu加速 自适应采样 均方误差 |
| Department | 袁红亮, 中国科学院软件研究所, 中国科学院天基综合信息系统重点实验室, 北京 100190, 中国;吴付坤, 中国科学院软件研究所, 中国科学院天基综合信息系统重点实验室, 北京 100190, 中国;郑昌文, 中国科学院软件研究所, 中国科学院天基综合信息系统重点实验室, 北京 100190, 中国; |
| Language | 中文 |
| CSCD ID | CSCD:5678009 |
| Content Type | 期刊论文 |
| URI | http://ir.iscas.ac.cn/handle/311060/17369 |
| Collection | 中国科学院软件研究所 |
| Recommended Citation GB/T 7714 | 袁红亮,吴付坤,郑昌文. 用SURE引导自适应采样与采样颜色直方图重构[J]. 计算机辅助设计与图形学学报,2016,28(4):533-539. |
| APA | 袁红亮,吴付坤,&郑昌文.(2016).用SURE引导自适应采样与采样颜色直方图重构.计算机辅助设计与图形学学报,28(4),533-539. |
| MLA | 袁红亮,et al."用SURE引导自适应采样与采样颜色直方图重构".计算机辅助设计与图形学学报 28.4(2016):533-539. |
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| 用SURE引导自适应采样与采样颜色直方图（3693KB） | 开放获取 | License | Application Full Text | |||
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