scholarly journals Correlation matching method for high-precision position detection of optical vortex using Shack–Hartmann wavefront sensor

2012 ◽  
Vol 20 (24) ◽  
pp. 26099 ◽  
Author(s):  
Chenxi Huang ◽  
Hongxin Huang ◽  
Haruyoshi Toyoda ◽  
Takashi Inoue ◽  
Huafeng Liu
Keyword(s):  
High Precision ◽  
Optical Vortex ◽  
Wavefront Sensor ◽  
Matching Method ◽  
Position Detection ◽  
Correlation Matching

Optical vortex position detection with a Shack-Hartmann wavefront sensor using extended closed contour method

2015 ◽  
Author(s):  
Hongxin Huang ◽  
Jia Luo ◽  
Yoshinori Matsui ◽  
Haruyoshi Toyoda ◽  
Takashi Inoue
Keyword(s):  
Optical Vortex ◽  
Contour Method ◽  
Wavefront Sensor ◽  
Closed Contour ◽  
Position Detection

Adaptive position detection of optical vortex using a Shack-Hartmann wavefront sensor

2015 ◽  
Author(s):  
Jia Luo ◽  
Hongxin Huang ◽  
Yoshinori Matsui ◽  
Haruyoshi Toyoda ◽  
Takashi Inoue ◽  
...  
Keyword(s):  
Optical Vortex ◽  
Wavefront Sensor ◽  
Position Detection

scholarly journals High-order optical vortex position detection using a Shack-Hartmann wavefront sensor

2015 ◽  
Vol 23 (7) ◽  
pp. 8706 ◽  
Author(s):  
Jia Luo ◽  
Hongxin Huang ◽  
Yoshinori Matsui ◽  
Haruyoshi Toyoda ◽  
Takashi Inoue ◽  
...  
Keyword(s):  
Optical Vortex ◽  
High Order ◽  
Wavefront Sensor ◽  
Position Detection

scholarly journals An Automatic Recognition and Positioning Method for Point Source Targets on Satellite Images

2018 ◽  
Vol 7 (11) ◽  
pp. 434 ◽  
Author(s):  
Kai Li ◽  
Yongsheng Zhang ◽  
Zhenchao Zhang ◽  
Ying Yu
Keyword(s):  
Point Source ◽  
High Precision ◽  
Template Matching ◽  
Automatic Recognition ◽  
Radiometric Calibration ◽  
Matching Method ◽  
Suitable Alternative ◽  
Position Detection ◽  
Intervention Point ◽  
Positioning Method

Currently, the geometric and radiometric calibration of on-board satellite sensors utilizes different ground targets using some form of manual intervention. Point source targets provide high precision geometric and radiometric information and have the potential to become a new tool for joint geometric and radiometric calibration. In this paper, an automatic recognition and positioning method for point source target images is proposed. First, the template matching method was used to effectively reduce nonpoint source target image pixels in the satellite imagery. The point source target images were then identified using particular feature parameters. Using the template matching method, the weighted centroid method, and the Gaussian fitting method, the positions of the centroid of the point source target images were calculated. The maximum position detection error obtained using the three methods was 0.07 pixels, which is comparably better than artificial targets currently in use. The experimental results show point source targets provide high precision geometric information, which can become a suitable alternative for automatic joint geometric and radiometric calibration of spaceborne optical sensors.

High precision spot position detection model for the near infrared light

2016 ◽  
Vol 45 (7) ◽  
pp. 0717001
Author(s):  
吴佳彬 Wu Jiabin ◽  
陈云善 Chen Yunshan ◽  
高世杰 Gao Shijie ◽  
吴志勇 Wu Zhiyong
Keyword(s):  
High Precision ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Detection Model ◽  
Position Detection

Confocal position alignment in high-precision wavefront error metrology using Shack-Hartmann wavefront sensor

2016 ◽  
Author(s):  
Jiani Su ◽  
Zengxiong Lu ◽  
Yuejing Qi ◽  
Guangyi Liu ◽  
Qingbin Meng
Keyword(s):  
High Precision ◽  
Wavefront Sensor ◽  
Wavefront Error
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