We have already seen an example of color-based tracking. It is simpler. This time, we see much more better algorithms like “Meanshift”, and its upgraded version, “Camshift” to find and track them.
Now let’s discuss an important concept, “Optical Flow”, which is related to videos and has many applications.
In several applications, we need to extract foreground for further operations like object tracking. Background Subtraction is a well-known method in those cases.