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Is it possible to compare and match the keypoints and descriptors of an image (that we have already calculated) with a video that is running in the real time?

It is an object recognition project that I'm working on. I want to compare the keypoints and descriptors of a base image that i already have in the background, with a video that will be running in real time. So that, when there is a match, I can say that the object is found in the video, by enclosing the object in a rectangle and displaying the name of that object in one corner. Need this information real bad. Please do reply. :)