A high-speed vision processor based on pixel-parallel PE array and its applications

Abstract

This paper proposes a novel high-speed vision processor based on pixel-parallel PE array. The processor consists of a pixel-parallel PE array, an embedded RISC core, an AHB bus, some SRAM blocks and other logical controllers. PE array performs the low- and mid-level vision processing, and RISC core carries out the high-level vision processing in succession. The vision processor can process vision information at a speed higher than 1000fps. Many application algorithms can be implemented by software programming on the vision processor. The processor prototype is implemented on a FPGA board with a 64×64 PE array and the clock frequency is 100MHz. It can realize moving detection in 128×128 image data at a rate of 4500fps, and 104fps in complicated face detection task for 160×120 video frame sequence. The results demonstrated that the vision processor outperforms the general serial CPUs for more than 60 times.