Data reuse analysis of local stereo matching

Abstract

External memory bandwidth and internal memory size have been major bottlenecks in designing VLSI architecture for real-time stereo matching hardware because of large amount of pixel data and disparity range. To address these bottlenecks, this work explores the impact of data reuse on disparity-order and pixel-order along with the partial column reuse (PCR) and vertically expanded row reuse (VERR) techniques we proposed. The analysis suggest that a disparity-order reuse with both PCR and VERR techniques is suitable for low memory cost and low external bandwidth design, whereas the pixel-order reuse with both techniques is more suitable for low computation resource requirement.