武汉科技大学 信息科学与工程学院,湖北,武汉,430081
纸质出版:2021
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陈思摇, 伍世虔. 基于降采样和相位相关的印刷电路板图像配准[J]. 微电子学与计算机, 2021, 38(4): 17-22.
CHEN Si-yao, WU Shi-qian. Printed circuit board image alignment based on downsampling and phase correlation[J]. 2021, 38(4): 17-22.
针对PCB缺陷检测系统对配准的要求,提出了一种基于图像降采样和相位相关法的配准算法.首先,为了解决使用单侧峰的相位相关亚像素配准方法在整数位移处误差较大的问题,提出根据两侧峰峰值差值占主峰的比例来判断是否需要使用双侧峰法修正的方法; 其次,为了解决算法应用中的效率问题,讨论了不同降采样倍率对配准速度和精度的影响.实验结果表明,该改进算法的最大误差和平均误差均比原单侧峰法小; 二千万像素的图像在五倍降采样情况下就能获得高精度,且速度约有20倍提升,该算法具有鲁棒性和实时性.
A registration algorithm based on image downsampling and phase correlation was proposed to meet the registration requirements of PCB defect detection system. First of all
in order to solve the problem that the phase-dependent sub-pixel registration method using one-sided peak has a large error at the integer displacement
a two-side peak method is proposed to judge whether it is necessary to use the two-side peak method according to the ratio of the peak-to-peak difference between the two sides to the main peak. Secondly
in order to solve the efficiency problem in the application of algorithms
the effects of different downsampling magnifications on registration speed and accuracy are discussed. The experimental results show that the maximum error and average error of the improved algorithm are smaller than that of the one-sided peak method. The 20-million-pixel image can achieve high accuracy under the condition of five times of downsampling
and the speed is improved by about 20 times. The algorithm has robustness and real-time performance.
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产叶林, 胡新平. 基于FAST和SURF的特征点快速匹配算法[J]. 计算机工程与设计, 2019, 40(12): 3500-3504. DOI: 10.16208/j.issn1000-7024.2019.12.023. CHAN Y L, HU X P. Fast featurepoint matching algorithm on FAST and SURF[J]. Computer Engineering and Design, 2019, 40(12): 3500-3504. DOI: 10.16208/j.issn1000-7024.2019.12.023.
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HASSANIN A A T M, EL-SAMIE F E A, EL BANBY G M. A real-time approach for automatic defect detection from PCBs based on SURF features and morphological operations[J]. Multimedia Tools and Applications, 2019, 78(24): 34437-34457. DOI: 10.1007/s11042-019-08097-9.
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