论文标题
HDR照明扩张以减少虚拟生产阶段的动态范围
HDR Lighting Dilation for Dynamic Range Reduction on Virtual Production Stages
论文作者
论文摘要
我们提出了一种技术，可通过散布浓缩光源的光线来减少HDRI照明环境图的动态范围。这使我们能够在照明繁殖系统中显示出具有有限动态范围（例如虚拟生产LED阶段）的HDRI映射照明的合理近似。该技术确定了给定像素阈值以上HDRI图的区域，将这些区域扩张，直到每个区域的平均像素值低于阈值，最后将每个扩张区域的像素替换为区域的平均像素值。新的HDRI地图包含与原始的能量相同的能量，尽可能少地散布光线，并避免色条。
We present a technique to reduce the dynamic range of an HDRI lighting environment map in an efficient, energy-preserving manner by spreading out the light of concentrated light sources. This allows us to display a reasonable approximation of the illumination of an HDRI map in a lighting reproduction system with limited dynamic range such as virtual production LED Stage. The technique identifies regions of the HDRI map above a given pixel threshold, dilates these regions until the average pixel value within each is below the threshold, and finally replaces each dilated region's pixels with the region's average pixel value. The new HDRI map contains the same energy as the original, spreads the light as little as possible, and avoids chromatic fringing.
