A two-and-a-half-D motion-blur algorithm
Nelson Max, Douglas M. Lerner · ACM SIGGRAPH Computer Graphics · 1985
Algorithms are presented for raster and vector motion blur, which produce images and masks suitable for combination by the 21/2-D compositing process. The raster algorithm is based on a "skew, blur, unskew" scheme, using a very efficient one-dimensional blurring algorithm. The vector algorithm extends the ideas of anti-aliased scan conversion to motion blur.