摘要
HOUGH变换检测线段具有良好的鲁棒性,且适合硬件加速实现,但在检测非单一线段时,面临峰值搜寻困难和临近线段干扰两大难题。针对峰值搜寻困难问题,结合硬件并行与流水线的优势,提出n路并行比较电路,实现14位数据并行比较,对累积参数表中的峰值数据进行排序,大幅提升搜寻效率。针对临近线段干扰问题,理论结合实际,深入研究临近干扰线段分布,剔除可能干扰线段,准确检测5条线段。实验结果表明,IP数据通过率最高可达9.58×107 pixel/s,满足嵌入式系统实时处理要求。
The HOUGH transform detection line segment has good robustness and is suitable for hardware acceleration.However,when detecting non-single value line segments,it faces two major problems:peak search difficulty and adjacent line segment interference;for problem 1,the advantages of hardware parallelism and pipeline,Propose a parallel comparison and sorting circuit,realize 14 data parallel comparison,sort the peak data in the accumulation parameter table,and greatly improve the search efficiency;for problem 2,combine theory with practice,in-depth research on the distribution of adjacent interference line segments,and eliminate possible interference line segments.Accurately detect 5 line segments.The data pass rate is up to 9.58×107 pixel/s,which meets real-time processing requirements.
作者
吴相涛
桑红石
WU Xiangtao;SANG Hongshi(School of Artificial Intelligence and Automation,HUST,Wuhan 430074,China;National Defense Science and Technology Key Laboratory of Multispectral Information Processing Technology,Wuhan 430074,China;Key Laboratory of Image Information Processing and Intelligent Control,Wuhan 430074,China)
出处
《通信电源技术》
2021年第5期17-21,共5页
Telecom Power Technology
关键词
HOUGH变换
峰值检测
线段合并
并行计算
硬件加速
HOUGH transformation
peak detection
line segment merge
parallel computing
hardware acceleration
