Patent ID: 8681875

Claim:
An apparatus for detecting a block boundary within a video frame, the apparatus comprising: a boundary pixel identifier configured to obtain a first binary map of pixels that are classified under original boundaries and a second binary map of pixels that are classified under resealed boundaries; a first boundary histogram generator configured to convert the first binary map of pixels to a first boundary histogram; a second boundary histogram generator configured to convert the second binary map of pixels to a second boundary histogram; and a block boundary detector configured to use interpolated autocorrelation, the block boundary detector including: a block dimension detector for height configured to apply interpolated autocorrelation to the first and second boundary histograms to determine a value of block height, a value of block height offset and a value of block height confidence, and a block dimension detector for width configured to apply interpolated autocorrelation to the first and second boundary histograms to determine a value of block width, a value of block width offset and a value of block width confidence.