Patent ID: 9443296
Filing Date: 2016-09-13
CPC Classification: G06T,H04N

Claim Text:
1. A block matching apparatus for estimating a disparity between two image frames, the apparatus comprising: an absolute difference calculation unit configured to receive bit values representing pixel values of corresponding pixels corresponding to each other in an N×N unit block of a first image frame and an N×N unit matching block of a second image frame matching to the N×N unit block of the first image frame among the two image frames, and calculating an absolute difference between the corresponding pixels; a power control unit configured to alternately apply a normal driving power and a low driving power to the absolute difference calculation unit; a compensation unit configured to compensate a low absolute difference of the corresponding pixels calculated by the absolute difference calculation unit applied with the low driving power with a normal absolute difference of adjacent corresponding pixels adjacent to the corresponding pixels calculated by an absolute difference calculation unit applied with the normal driving power; and a matching unit configured to determine an N×N unit matching block having a minimum sum by adding the low absolute difference compensated by the compensation unit and the normal absolute difference.