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Computer vision is a field whose goal is to take as input images or video streams and to extract useful information about the objects and surfaces in the scene that gave rise to the image or video. Humans employ vision to acquire knowledge about the external world and to guide a wide range of actions, and the grand objective of computer vision research is to provide machines with similar capabilities. These can be divided into the following:

Segmentation. This is the partitioning of an image into sets of pixels that correspond to single objects or parts of objects. In a video stream, tracking is the process of matching these groups over time.

Recognition. This involves categorization, which operates at a more generic level (This is the image ...

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