A SoPC design of a real-time high-definition stereo matching algorithm based on SAD

Xiang Zhang, Huaixiang Zhang, Yifan Wu

COMPUTER MODELLING & NEW TECHNOLOGIES 2014 18(4) 7-14

School of Computer, Hangzhou Dianzi University, Hangzhou 310018, China

The System-on-Programmable-Chip (SoPC) architecture to implement a stereo matching algorithm based on the sum of absolute differences (SAD) in a FPGA chip is proposed. The hardware implementation involves a 32-bit Nios II microprocessor, memory interfaces and stereo matching algorithm circuit module. The Nios II microprocessor is a configurable soft IP core in charge of managing the buffer of the stereo images and users’ configuration data. The system can process any different sizes of stereo pair images through a configuration interface. The maximum horizon resolution of stereo images is 2048. When the algorithm core works under 60MHz, the 1396×1110 disparity map can be achieved at 30 fps speed.