HyShare:混合样本和阴影再利用,实现实时摄影逼真染
IEEE computer graphics and applications
|November 28, 2025
概括
混合重复使用算法HyShare通过结合路径样本和阴影重复使用来增强实时染. 这种新的方法可以提高光现实图形的染速度和图像质量.
科学领域:
- 计算机图形 计算机图形
- 实时染 实时染
- 计算成像技术的成像
背景情况:
- 实时路径跟踪需要大量的计算资源,因为需要大量的路径采样和阴影.
- 高率和高分辨率要求加剧了这些计算挑战.
研究的目的:
- 介绍HyShare,一种混合重复使用算法,用于高效的实时路径跟踪.
- 共同优化空间和时间路径样本和阴影重复使用,解决相互依赖性并保持图像保真性.
主要方法:
- HyShare 集成了 ReSTIR 风格的路径样本重复使用与自适应阴影重复使用.
- 采用每像素验证和动态更新机制来缓解陈旧数据中的工件.
- 使用辐射和几何变化检查以适应性地禁用运动敏感区域的重用.
主要成果:
- 与最先进的方法相比,HyShare在染速度上实现了37.4%的改进.
- 以PSNR+1.8 dB和SSIM+0.17.17,显示了更好的图像质量.
- 在复杂的动态场景中表现优于ReSTIR DI,ReSTIR PT和Area ReSTIR等基线.
结论:
- 通过其混合重复使用策略,HyShare有效地推进了实时摄影逼真染.
- 算法的联合优化和自适应机制确保了速度和可靠性.
- 在要求的染场景中,HyShare显示了可概括性和有效性.
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