Novel Calibration Method for Stereo Vision Sensor Using Flexible Target

Zhen, 刘震 Liu; Yanna, 尚砚娜 Shang

doi:10.3788/aos201333.0315001

Cited by 2 publications

(1 citation statement)

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“…For the calibration of the vision sensor, it can be divided into camera parameter calibration and system structure parameter calibration [5,6]. At present, the most widely used camera parameter calibration method is based on coplanar reference object calibration method proposed by Zhang Zhengyou [7].…”

Section: Introductionmentioning

confidence: 99%

On site calibration of inner defect detection based on structured light

Shao¹,

Zhu²,

Ding³

et al. 2018

Vib. proced.

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A special calibration cylinder is intended to meet the actual requirement of calibration in defect detection system, and a calibration method is proposed based on this calibration the cylinder. The relative measurement method is adopted in the measurement of inner diameter of cylinder. Through processing the structured light image of inner surface of calibrated cylinder, the relationship between the depth of groove in calibrated cylinder and the distance between the displaced pixels of structured light stripes is obtained, which is used in the calculation of groove depth, and the wear of inner diameter of cylinder is obtained. Experiments show that this method can effectively adapt to the detection environment with a small field of view and weak light, and have higher calibration accuracy, and can meet the actual needs of the detection system calibration.

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Section: Introductionmentioning

confidence: 99%

On site calibration of inner defect detection based on structured light

Shao¹,

Zhu²,

Ding³

et al. 2018

Vib. proced.

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基于机载标识目标的高速相机标定方法

Liu Zeqing,

Xu Yong,

Du Bojun

et al. 2023

激光与光电子学进展

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To address the issue of highspeed camera calibration in shooting range for fieldwide field measurement, a calibration technique based on airborne identification targets is proposed. To obtain the known point set, an airborne precise positioning identification target is used, and a method based on simulated annealing sparrow search is used to solve the internal and external parameters of highspeed cameras. The airborne identification target is intended to be easily identified from a long distance. The dynamic difference after the event is used for precise positioning, and the precise measurement of the spatial position of the identification target is obtained through position correction. Based on the simulated annealing sparrow search calibration method, the internal and external parameters of the highspeed camera are calculated and calibrated. In the verification experiment created, the reprojection error of the proposed method for addressing the internal and external parameters of the highspeed camera is 0. 43 pixel, and the average intersection error is 2. 5 cm. The calibration effect and intersection accuracy are superior to Tsai's twostep calibration method, which improves the highspeed camera's remote calibration accuracy and intersection measurement accuracy while also resolving the calibration problem during aerial measurement.

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Novel Calibration Method for Stereo Vision Sensor Using Flexible Target

Cited by 2 publications

References 0 publications

On site calibration of inner defect detection based on structured light

On site calibration of inner defect detection based on structured light

基于机载标识目标的高速相机标定方法

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