8.6 Design Example: Video Accelerator
In this section we consider the design of a video accelerator, specifically a motion estimation accelerator. Digital video is still a computationally intensive task, so it is well suited to acceleration. Motion estimation engines are used in real-time search engines; we may want to have one attached to our personal computer to experiment with video processing techniques.
8.6.1 Video Compression
Before examining the video accelerator itself, let’s look at video compression algorithms in order to understand the role played by a motion estimation engine.
Figure 8.29 shows the block diagram for MPEG-2 video compression [Has97]. MPEG-2 forms the basis for U.S. HDTV broadcasting. This compression uses several ...
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