14.3. Architectural Approaches to Video Processing
Early architectures for video concentrated on optimizing a single operation. To this end, different types of array processors and single-instruction multiple data (SIMD) machines were proposed for video operations, and SIMD has been widely used for motion estimation. Figure 14-5 shows the SIMD motion estimation architecture proposed by Yang et al. . This machine uses an interconnection network to shuffle the data values as required between processing elements (PEs) in order to minimize the number of frame-memory accesses to pixels.
Figure 14-5. The motion estimation architecture of Yang et al (ref. 585).
SIMD machines can implement regular video operations very efficiently. However, ...