APPARATUS FOR MATCHING BLOCKS OF STEREO IMAGE

摘要

The present invention relates to a block matching apparatus, and more particularly, to a block matching apparatus, in which a normal driving power and a low driving power are alternately applied to an absolute difference calculation unit for calculating an absolute difference between a pixel of a first image frame and a pixel of a second image frame corresponding thereto among two stereo image frames, and a low absolute difference of corresponding pixels calculated using the low driving power is compensated with a high absolute difference of adjacent corresponding pixels calculated using the normal driving power, so that since a separate estimation unit does not need to be provided, the block matching apparatus can be lightly manufactured in terms of hardware and can reduce power consumption.

主权项

1. A block matching apparatus for estimating a disparity between two image frames, comprising:
an absolute difference calculation unit for receiving 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 for alternately applying a normal driving power and a low driving power to the absolute difference calculation unit; a compensation unit for compensating 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 for determining 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.