Research on Monocular Vision Distance Measurement Algorithm Based on Reference Target

Author(s):  
Zhengguang Xu ◽  
Zhaohui Zhou ◽  
Luyao Wang
2014 ◽  
Vol 532 ◽  
pp. 165-169 ◽  
Author(s):  
Tao Liu ◽  
Lei Wan ◽  
Xing Wei Liang

A monocular vision measurement system was proposed based on the underwater robot, which used a single camera as visual sensor and used inertial navigation system to measure position and attitude. In this paper, the processing of underwater target images and the parameter calibration algorithm for visual measurement system were discussed, and then the visual measurement mathematic model of underwater robot was derived using the pose information of the inertial navigation system. Vision measuring principle validation tests for underwater robot have been carried out to detect underwater targets. The experiments verify that the monocular vision measurement algorithm proposed for underwater robot is effective with a preferably accuracy.


2022 ◽  
Vol 93 (1) ◽  
pp. 015004
Author(s):  
Jiaqi Wei ◽  
Jun Liu ◽  
Jun Tang ◽  
Hua Yu ◽  
Chong Shen ◽  
...  

2014 ◽  
Vol 716-717 ◽  
pp. 1442-1445
Author(s):  
Wei Rong Yang ◽  
Chang Hui Liu ◽  
Kao Shuai

In the actual operation by crane operator, there will appear situation that operator cannot make timely judgment on distance between crane and adjacent obstacle and cause collision accident. For this problem, this paper establishes anti-collision system on distance measurement focuses on ARM 11, on the basis based on machine vision and image procession, it considers effect of corresponding point match and extraction deviation of single characteristics point on measurement result, adopts one kind of method of distance measurement by monocular vision based on single characteristic point. The test result indicates that this system can effectively measure distance with obstacle, it has accurate measurement, high reliability and it can meet real-time requirement.


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