Analytical Motion Blur Rasterization With Compression

摘要

A rasterizer, based on time-dependent edge equations, computes analytical visibility in order to render accurate motion blur. An oracle-based compression algorithm for the time intervals lowers the frame buffer requirements. High quality motion blurred scenes can be rendered using a rasterizer with rather low memory requirements. The resulting images may contain motion blur for both opaque and transparent objects.

主权项

1. A method of rasterizing a motion blurred triangle comprising:
using a computer to analytically determine a time interval of overlap for a sample point for each of a plurality of time dependent edge equations; storing, for said interval, when the sample point is inside a moving triangle; storing, for said interval, a depth and color representation, wherein if a number of stored intervals per pixel exceeds a threshold value:
estimating a similarity between each of the stored intervals based on their respective stored parameters; andmerging the two stored intervals having the highest similarity until the number of stored intervals per pixel is less than or equal to the threshold value.