传感技术学报2025，Vol.38Issue(10)：1827-1833,7.DOI:10.3969/j.issn.1004-1699.2025.10.013
基于FPGA的超低延迟红外笔的运动捕捉系统设计
Design of Motion Capture System with Ultra-Low Delay Infrared Pen Based on FPGA
摘要
Abstract
Targeting at the problem of hysteresis and vertigo caused by high delay in virtual reality(VR)3D human-computer interac-tion,an ultra-low delay motion capture system based on field programmable gate array(FPGA)is designed.In order to meet the design requirements of ultra-low latency acquisition of moving targets,optical,electronic and algorithm optimization methods are used to reduce the data volume and optimize the end-to-end delay.In terms of optics,the 850 nm wavelength LED lamp is used for filtering with a nar-row band filter in the 850 nm band,and only useful information in the 850 nm band is retained.In terms of electronics,combining the advantages of FPGA,such as fast operation speed and low processing delay,FPGA is used as the main control unit to realize the image processing algorithm and the driving of each module.In terms of algorithm,the system delay is further reduced by changing the cache mode and optimizing the readout mode of centroid extraction algorithm.The experimental results show that the end-to-end delay from image acquisition to infrared pen position coordinate output is only 13.092 ms,and the average delay is about 15.043 ms.The design re-quirements of ultra-low latency is met,the extraction results of centroid coordinates are accurate.关键词
信号处理/超低延迟/运动捕捉/FPGAKey words
signal processing/ultra-low latency/motion capture/FPGA分类
计算机与自动化引用本文复制引用
宫雨生,赵壮壮,曹可亮,付威威..基于FPGA的超低延迟红外笔的运动捕捉系统设计[J].传感技术学报,2025,38(10):1827-1833,7.基金项目
中国科学院青促会优秀会员项目(E1290301) （E1290301）
