Patent ID: 7408989
Filing Date: 2008-08-05
Classification: G06T

Abstract:
1. A method of processing a video signal, the method comprising: selecting a first search window of a first frame of video data, the first search window having a first window size; determining a first correlation factor between a first set of pixels within the first search window with respect to a second set of pixels in a second frame of video data; comparing the first correlation factor to a first threshold value; selecting a second search window of the first frame, the second search window having a second window size, the second window size greater than the first window size; determining a second correlation factor between a third set of pixels within the second search window with respect to the second set of pixels; comparing the second correlation factor to a second threshold value, the second threshold value being different than the first threshold value; selecting a third search window of the first frame, the third search window having a third window size, the third window size greater than the second window size; determining a third correlation factor between a fourth set of pixels within the third search window with respect to the second set of pixels; and comparing the third correlation factor to a third threshold having a third correlation threshold value, the third correlation threshold value being different than the second correlation threshold value and different than the first correlation threshold value.