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arXiv 2012.02344cs.GR
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Monte Carlo绘制的视觉误差优化

Perceptual error optimization for Monte Carlo rendering

Vassillen Chizhov, Iliyan Georgiev, Karol Myszkowski, Gurprit Singh

摘要:

合成逼真的图像涉及计算高维光传输积分。实际上,这些积分是通过蒙特卡罗积分进行数值估计的。这种估计的误差表现为明显的混叠或噪声。为了改善这些伪影,提高图像保真度,我们提出了一个面向感知的框架来优化蒙特卡洛渲染的误差。我们利用基于人类感知的半色调文献模型。结果是一个优化问题,其解将误差作为视觉上令人愉悦的蓝色噪声分布在图像空间中。为了找到解决方案,我们提出了一套算法,提供不同的质量和速度之间的权衡,显示出比现有技术水平的重大改进。我们使用定量和误差指标进行评估,并提供广泛的补充材料,以证明我们的方法实现的感知改善。

英文摘要:

Synthesizing realistic images involves computing high-dimensional light-transport integrals. In practice, these integrals are numerically estimated via Monte Carlo integration. The error of this estimation manifests itself as conspicuous aliasing or noise. To ameliorate such artifacts and improve image fidelity, we propose a perception-oriented framework to optimize the error of Monte Carlo rendering. We leverage models based on human perception from the halftoning literature. The result is an optimization problem whose solution distributes the error as visually pleasing blue noise in image space. To find solutions, we present a set of algorithms that provide varying trade-offs between quality and speed, showing substantial improvements over prior state of the art. We perform evaluations using quantitative and error metrics, and provide extensive supplemental material to demonstrate the perceptual improvements achieved by our methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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