Fig. 8
From: Efficient motion blurred shadows using a temporal shadow map
A comparison about the number of visible time ranges stored at each pixel in our algorithm with and without using the coverage map (CM). The result image is rendered using 4000 cubes that have random positions and random speeds in [4, 8]. The number of visible time ranges stored at each pixel is visualized as heat maps. Notice the massive reduction of this number at the bottom-left heat map compared to the bottom-right one