Centroid Automatic Extraction of Spaceborne Laser Spot Image

doi:10.11947/j.AGCS.2018.20170517

Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (2): 135-141.doi: 10.11947/j.AGCS.2018.20170517

Centroid Automatic Extraction of Spaceborne Laser Spot Image

YUAN Xiaoqi^1,2, LI Guoyuan^2,3,5, TANG Xinming^2,3, GAO Xiaoming^2,3, HUANG Genghua^4,5, LI Ye¹

1. Changchun University of Science and Technology, Changchun 130022, China;
2. Satellite Surveying and Mapping Application Center, Beijing 100048, China;
3. Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
4. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;
5. Key Laboratory of Space Active Opto-electronics Technology, Chinese Academy of Sciences, Shanghai 200083, China

Received:2017-09-12 Revised:2017-12-04 Online:2018-02-20 Published:2018-03-02
Supported by:
The National Natural Science Foundation of China (No. 41601505);The National High Resolution Earth Observation Foundation for Young Scientists of China (No. GFZX04061502);The National Key Research and Development Program of China (No. 2016YFB0501005);The Surveying and Mapping Basic Research Program of National Administration of Surveying,Mapping and Geo-information (No. 2018KJ0204);The Open Fund of the Key Laboratory of Space Active Opto-electronics Technology of Chinese Academy of Sciences

Abstract

Abstract: The centroid extraction of laser spot images is an important part of satellite laser altimetry data processing,and has significance for obtaining accurate laser pointing angle.This paper summarizes the gray centroid method,Gauss fitting and elliptical fitting method,and compares their advantages and disadvantages.Based on this,a kind of elliptical fitting method combined with the Gaussian threshold is proposed.According to the simulation data test,the accuracy of the method is considerable.Moreover,the real laser spot image-LPA (laser profile array) of GLAS (geoscience laser altimeter system) data is implemented and validated.And the result shows that periodic variation of centroid of LPA is about for 1.5 hours and up to 2~3 pixels,which means the laser pointing angle maybe change 9 arc-seconds and it is necessary to improve the measurement accuracy of laser pointing angle by on-orbit change monitoring of laser centroid position.The conclusions can provide some valuable reference for the footprint images processing of domestic satellite laser altimeter.

Key words: satellite laser altimeter, laser spot, footprint image, LPA, centroid extraction

CLC Number:

P237

YUAN Xiaoqi, LI Guoyuan, TANG Xinming, GAO Xiaoming, HUANG Genghua, LI Ye. Centroid Automatic Extraction of Spaceborne Laser Spot Image[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(2): 135-141.

References

[1] 李国元, 唐新明, 张重阳, 等. 多准则约束的ICESat/GLAS高程控制点筛选[J]. 遥感学报, 2017, 21(1):96-104. LI Guoyuan, TANG Xinming, ZHANG Chongyang, et al. Multi-criteria Constraint Algorithm for Selecting ICESat/GLAS Data as Elevation Control Points[J]. Journal of Remote Sensing, 2017, 21(1):96-104.
[2] HUANG Huabing, CHENG Xiao, GONG Peng, et al. A New 1000 m Digital Elevation Model for Antarctica by Integrating ICESat/GLAS and Envisat RA-2 Data[J]. Journal of Remote Sensing, 2014, 18(1):117-125.
[3] 陈国栋, 李建成, 褚永海, 等. 利用ICESat数据确定北冰洋海冰出水高度——以2005-2006年为例[J]. 测绘学报, 2015, 44(6):625-633. DOI:10.11947/j.AGCS.2015.20140478. CHEN Guodong, LI Jiancheng, CHU Yonghai, et al. Determination of Sea Ice Freeboard in Arctic from ICESat:Case Study of 2005-2006[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(6):625-633. DOI:10.11947/j.AGCS.2015.20140478.
[4] 段祝庚, 肖化顺. 基于GLAS数据的森林生物量估算研究进展[J]. 林业资源管理, 2013(1):86-90, 94. DUAN Zhugeng, XIAO Huashun. Review of the Methods for Forest Biomass Estimation with GLAS Data[J]. Forest Resources Management, 2013(1):86-90, 94.
[5] 唐新明, 李国元, 高小明, 等. 卫星激光测高严密几何模型构建及精度初步验证[J]. 测绘学报, 2016, 45(10):1182-1191. DOI:10.11947/j.AGCS.2016.20150357. TANG Xinming, LI Guoyuan, GAO Xiaoming, et al. The Rigorous Geometric Model of Satellite Laser Altimeter and Preliminarily Accuracy Validation[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(10):1182-1191. DOI:10.11947/j.AGCS.2016.20150357.
[6] 李国元. 对地观测卫星激光测高数据处理与工程实践[D]. 武汉:武汉大学, 2017. LI Guoyuan. Research on the Several Key Techniques of Earth Observation Satellite Laser Altimeter Data Processing and Application[D]. Wuhan:Wuhan University, 2017.
[7] BAE S, WEBB C, SCHUTZ B. GLAS PAD Calibration Using Laser Reference Sensor Data[C]//AIAA/AAS Astrodynamics Specialist Conference and Exhibit. Providence, Rhode Island:AIAA, 2004.
[8] 杨耀权, 施仁, 于希宁, 等. 用Hough变换提高激光光斑中心定位精度的算法[J]. 光学学报, 1999, 19(12):1655-1660. YANG Yaoquan, SHI Ren, YU Xining, et al. An Algorithm to Raise the Locating Precision of Laser Spot Center Based on Hough Transform[J]. Acta Optica Sinica, 1999, 19(12):1655-1660.
[9] STEGER C. An Unbiased Detector of Curvilinear Structures[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1998, 20(2):113-125.
[10] 尚学军, 何明一, 王军良. 基于线阵CCD的光斑定位算法研究[J]. 激光与红外, 2008, 38(7):730-731, 740. SHANG Xuejun, HE Mingyi, WANG Junliang. Research of Method in Light-spot Location Based on Linear CCD[J]. Laser & Infrared, 2008, 38(7):730-731, 740.
[11] 王敏, 赵金宇, 陈涛. 基于各向异性高斯曲面拟合的星点质心提取算法[J]. 光学学报, 2017, 37(5):0515006. WANG Min, ZHAO Jinyu, CHEN Tao. Center Extraction Method for Star-map Targets Based on Anisotropic Gaussian Surface Fitting[J]. Acta Optica Sinica, 2017, 37(5):0515006.
[12] 闫蓓, 王斌, 李媛. 基于最小二乘法的椭圆拟合改进算法[J]. 北京航空航天大学学报, 2008, 34(3):295-298. YAN Bei, WANG Bin, LI Yuan. Optimal Ellipse Fitting Method Based on Least-square Principle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(3):295-298.
[13] 张奔牛, 万红明, 毛成林. 基于差分光斑中心定位算法的位移传感技术研究[J]. 传感技术学报, 2011, 24(2):215-219. ZHANG Benniu, WANG Hongming, MAO Chenglin. Study on Displacement Sensor Based on Difference Operation Spot Center Location Algorithm[J]. Chinese Journal of Sensors and Actuators, 2011, 24(2):215-219.
[14] QUINE B M, TARASYUK V, MEBRAHTU H, et al. Determining Star-image Location:A New Sub-pixel Interpolation Technique to Process Image Centroids[J]. Computer Physics Communications, 2007, 177(9):700-706.
[15] 王丽丽, 胡中文, 季杭馨. 基于高斯拟合的激光光斑中心定位算法[J]. 应用光学, 2012, 33(5):985-990. WANG Lili, HU Zhongwen, JI Hangxin. Laser Spot Center Location Algorithm Based on Gaussian Fitting[J]. Journal of Applied Optics, 2012, 33(5):985-990.
[16] 冯新星, 张丽艳, 叶南, 等. 二维高斯分布光斑中心快速提取算法研究[J]. 光学学报, 2012, 32(5):0512002. FENG Xinxing, ZHANG Liyan, YE Nan, et al. Fast Algorithms on Center Location of Two Dimensional Gaussian Distribution Spot[J]. Acta Optica Sinica, 2012, 32(5):0512002.
[17] 王海涌, 费峥红, 王新龙. 基于高斯分布的星像点精确模拟及质心计算[J]. 光学精密工程, 2009, 17(7):1672-1677. WANG Haiyong, FEI Zhenghong, WANG Xinlong. Precise Simulation of Star Spots and Centroid Calculation Based on Gaussian Distribution[J]. Optics and Precision Engineering, 2009, 17(7):1672-1677.
[18] 贾瑞明, 马晓蕾, 郝云彩. 基于偏正态分布的星点细分定位方法研究[J]. 激光与光电子学进展, 2016, 53(5):051002. JIA Ruiming, MA Xiaolei, HAO Yuncai. Research on Star Subdivision Location Method Based on Skewed Normal Distribution[J]. Laser & Optoelectronics Progress, 2016, 53(5):051002.
[19] 赵婧鑫, 周富强. 小尺寸光斑中心的高精度定位算法[J]. 红外与激光工程, 2014, 43(8):2690-2693. ZHAO Jingxin, ZHOU Fuqiang. High-precision Center Location Algorithm of Small-scale Focal Spot[J]. Infrared and Laser Engineering, 2014, 43(8):2690-2693.
[20] 詹银虎, 郑勇, 张超, 等. 超大视场太阳敏感器图像质心提取算法[J]. 测绘学报, 2015, 44(10):1078-1084. DOI:10.11947/j.AGCS.2015.20150118. ZHAN Yinhu, ZHENG Yong, ZHANG Chao, et al. Image Centroid Algorithms for Sun Sensors with Super Wide Field of View[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(10):1078-1084. DOI:10.11947/j.AGCS.2015.20150118.
[21] 贺强, 晏立. 基于LOG和Canny算子的边缘检测算法[J]. 计算机工程, 2011, 37(3):210-212. HE Qiang, YAN Li. Algorithm of Edge Detection Based on LOG and Canny Operator[J]. Computer Engineering, 2011, 37(3):210-212.
[22] 刘兆蓉, 王志乾, 刘绍锦, 等. 激光光斑中心精确定位算法研究[J]. 计算机仿真, 2011, 28(5):399-401, 409. LIU Zhaorong, WANG Zhiqian, LIU Shaojin, et al. Research of Precise Laser Spot Center Location Algorithm[J]. Computer Simulation, 2011, 28(5):399-401, 409.
[23] 张爱丽, 佟首峰, 韩成, 等. 基于CCD的光斑能量分布测量及特性分析[J]. 激光与红外, 2011, 41(6):622-626. ZHANG Aili, TONG Shoufeng, HAN Cheng, et al. Facula Energy Measurement and Analysis Based on CCD[J]. Laser & Infrared, 2011, 41(6):622-626.
[24] ABSHIRE J B, SUN Xiaoli, RIRIS H, et al. Geoscience Laser Altimeter System (GLAS) on the ICESat Mission:On-orbit Measurement Performance[J]. Geophysical Research Letters, 2005, 32(21):L21S02.
[25] YADAV G K. Simulation of ICESat/GLAS Full-Waveform over Highly Rugged Terrain[D]. Amsterdam:University of Twente, 2010.

Centroid Automatic Extraction of Spaceborne Laser Spot Image

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 2

Recommended Articles

Metrics

Comments

[1]	YANG Xiongdan, LI Guoyuan, WANG Peixian, CHEN Jiyi, MO Fan, ME Jiaqi, JIN Zelin. Laser pointing changes detection method for space-borne laser spot image [J]. Acta Geodaetica et Cartographica Sinica, 2020, 49(12): 1591-1599.
[2]	LI Guoyuan, HUANG Jiapeng, TANG Xinming, HUANG Genghua, ZHOU Shihong, ZHAO Yanming. Influence of Range Gate Width on Detection Probability and Ranging Accuracy of Single Photon Laser Altimetry Satellite [J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(11): 1487-1494.