8.3. Measures Based on Correlations
The major task to be addressed in this section can be summarized as follows: “Given a block of recorded data, find whether a specific known (reference) pattern is contained within the block and where it is located.” A typical application of this is found in scene analysis, when we want to search for specific objects within the image. Such problems arise in many applications, such as target detection, robot vision, and video coding. For example, in video coding a major step is that of motion estimation—that is, the process of locating corresponding pixels (of the same moved object) among successive image frames at different time instants. This step is then followed by the motion compensation stage, which compensates ...
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