激光与光电子学进展, 2020, 57 (7): 071203, 网络出版: 2020-03-31
基于编码环带径向直线拟合的圆环编码标志点中心提取方法 下载: 1286次
Method for Extracting the Center of Circular Coded Target Based on Radial Straight Line Fitting of Circular Coding
图 & 表
图 1. 投影变换前后的Schneider编码标志点。(a)物平面的标志点;(b)像平面的标志点
Fig. 1. Schneider coding mark before and after projection transformation. (a) Marked point of object plane; (b) marked point of image plane
图 2. 分割直线边缘原理图。(a)分割原理;(b)分割结果
Fig. 2. Principle diagram of line edge segmentation. (a) Principle of segmentation; (b) result of segmentation
图 3. 仿真直线边缘图像。(a)仿真直线图像;(b)局部放大图像
Fig. 3. Simulated straight line edge. (a) Simulated line image; (b) local enlarged image
图 4. 仿真图像的中心提取方法对比。(a)仿真图;(b)局部放大图
Fig. 4. Comparison of center extraction methods for the simulation image. (a) Simulation image; (b) local enlarged image
图 6. 连通域个数对提取中心精度的影响
Fig. 6. Effect of the number of code segments on the accuracy of the extraction center
图 7. 高斯噪声标准差对提取中心精度的影响
Fig. 7. Effect of Gaussian noise standard deviation on the accuracy of extraction center
图 10. 半径同比例变化对中心提取误差的影响
Fig. 10. Effect of radius proportional change on center extraction error
图 11. 测试标靶和中心提取对比。(a)测试标靶图像;(b)中心提取结果对对比图
Fig. 11. Comparison of center extraction on test target. (a) Test target image; (b) comparison of center extraction
表 1亚像素边缘检测方法的误差对比
Table1. Error comparison of sub-pixel edge detection methodsunit: pixel
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表 2相机标定结果对比
Table2. Comparison of camera calibration results
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张宗华, 王森, 王宇莹, 张昂, 孟召宗, 肖艳军, 高楠. 基于编码环带径向直线拟合的圆环编码标志点中心提取方法[J]. 激光与光电子学进展, 2020, 57(7): 071203. Zonghua Zhang, Sen Wang, Yuying Wang, Ang Zhang, Zhaozong Meng, Yanjun Xiao, Nan Gao. Method for Extracting the Center of Circular Coded Target Based on Radial Straight Line Fitting of Circular Coding[J]. Laser & Optoelectronics Progress, 2020, 57(7): 071203.