Patent ID: 7623184
Filing Date: 2009-11-24
Classification: H04N

Abstract:
1. An apparatus for compensating a jitter occurred in the ith frame among N frames of a video sequence, each of the N frames comprising a plurality of blocks, N being a natural number larger than 3, and i being an integer index ranging from 1 to N, said apparatus comprising: a determining module for determining a block of background region BR a comparing module, coupled to the determining module, for comparing the block of BR an adjusting module, coupled to the comparing module, for adjusting the ith frame in accordance with the jitter vector to compensate for the jitter occurred in the ith frame; wherein the determining module comprises: a first processing module for determining a block in the (j−2)th frame, which corresponds to a block in the (j−3)th frame, to define a global motion vector and setting the block as a processing block in the (j−2)th frame, j being an integer index ranging from 4 to (i−1); a first access module, coupled to the first processing module, for accessing the block in the (j−1)th frame which corresponds to the processing block in the (j−2)th frame and identifying the block as a block of background region BR a first computing module for calculating a jitter vector defined by the block of BR a first judgment module for judging if the jitter vector computed by the first computing module lies within a range and, if YES, adjusting the jth frame in accordance with the jitter vector; and a storage module, coupled to the first judgment module, for storing the block of BR