Feature detection (computer vision): Difference between revisions

Revision as of 20:15, 13 January 2021

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== Definition of a feature ==

{{main|Feature (computer vision)}}

There is no universal or exact definition of what constitutes a feature, and the exact definition often depends on the problem or the type of application. Nevertheless, a feature is typically defined as an "interesting" part of an [[Digital image|image]], and features are used as a starting point for many computer vision algorithms. Since features are used as the starting point and main primitives for subsequent algorithms, the overall algorithm will often only be as good as its feature detector. Consequently, the desirable property for a feature detector is ''[[repeatability]]'': whether or not the same feature will be detected in two or more different images of the same scene.