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OpenCV: Computer Vision Projects with Python by Michael Beyeler, Prateek Joshi, Joseph Howse

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Mean-shift tracking

It turns out that the salience detector discussed previously is already a great tracker of proto-objects by itself. One could simply apply the algorithm to every frame of a video sequence and get a good idea of the location of the objects. However, what is getting lost is correspondence information. Imagine a video sequence of a busy scene, such as from a city center or a sports stadium. Although a saliency map could highlight all the proto-objects in every frame of a recorded video, the algorithm would have no way to know which proto-objects from the previous frame are still visible in the current frame. Also, the proto-objects map might contain some false-positives, such as in the following example:

Note that the bounding ...

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