Study on the Occlusion Problem in Dynamic Space Intersection Measurement with Multi-Camera Systems

Wei, 王伟 Wang; Zhijing, 于之靖 Yu; Yin, 郭寅 Guo; Xueyou, 杨学友 Yang

doi:10.3788/aos201434.0415003

Cited by 5 publications

(2 citation statements)

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“…𝑅 = (𝐼 − 𝑆) −1 ⋅ (𝐼 + 𝑆) (6) where I is the identity matrix. The rotation matrix R has only three variables a, b and c, and by solving for these three variables, R can be obtained.…”

Section: Somentioning

confidence: 99%

Docking Pose Measurement Method for Large Components Based on Draw-Wire Displacement Sensors

Sun,

Wang,

Tian

et al. 2023

Measurement Science Review

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A method for measuring the docking pose of large components based on the draw-wire displacement sensor is proposed. In this method, coordinate systems and measurement points are established on the docking surfaces of fixed and moving components. The draw-wire displacement sensor is used to measure the distances between these measurement points. A mathematical model based on the distances between the measurement points is established, and the three-sphere rendezvous positioning principle is optimized to obtain the spatial positions of the measurement points. Consequently, the pose deviations of the fixed and moving components in all six degrees of freedom (6DOF) are determined. A simulation analysis of the measurement uncertainty of the obtained pose deviations is performed, resulting in a composite standard uncertainty obtained from the measurement standard uncertainties of different sensors. The simulation results show that the composite standard uncertainty is most affected in the x-axis translation direction and least affected in the x-axis rotation direction. With this method, only the distances between the measurement points need to be measured to determine the corresponding pose relationships. The cost of the equipment is low, and it is not easily affected by external factors such as the environment.

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Section: Somentioning

confidence: 99%

Docking Pose Measurement Method for Large Components Based on Draw-Wire Displacement Sensors

Sun,

Wang,

Tian

et al. 2023

Measurement Science Review

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“…However, these proposed vanishing point detection methods have mainly focused on unstructured roads, highways and building scenes. They are difficult to apply to vanishing point detection in scenes of complex urban roads and streets, which include pedestrians, traffic and corners that can cause significant occlusion [18].…”

Section: Introductionmentioning

confidence: 99%

Efficient vanishing point detection method in complex urban road environments

Ding

2015

IET Computer Vision

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Detecting the vanishing point in a road image is important for robot navigation, intelligent transportation and other fields. This study proposes a new vanishing point detection method that uses the vertical information in complex urban road and street environments. First, all straight lines in the road image are detected based on curvature scale space and principal component analysis methods. Second, a new road region extraction method is proposed to support vanishing point detection. In this method, the image is decomposed into approximate sky, vertical and road regions using the estimation envelopes of the vertical lines. Third, the straight lines in the road region are extracted using a path perspective triangle and line length limits. The straight lines are then categorised into groups using proposed grouping strategies. Finally, vanishing point candidates are calculated from paired lines extracted from different groups and from the same group, and the final vanishing point is then estimated for the urban road scene using the mean shift clustering method. The experimental results show that the proposed algorithm can estimate the vanishing point accurately and efficiently in complex urban road environments, despite interference from vehicles and pedestrians and on curved and unstructured roads.

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The dynamic position compensation method of the online laser detection system for the ring workpiece

Zhang

Kong

et al. 2019

Measurement

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Study on the Occlusion Problem in Dynamic Space Intersection Measurement with Multi-Camera Systems

Cited by 5 publications

References 0 publications

Docking Pose Measurement Method for Large Components Based on Draw-Wire Displacement Sensors

Docking Pose Measurement Method for Large Components Based on Draw-Wire Displacement Sensors

Efficient vanishing point detection method in complex urban road environments

The dynamic position compensation method of the online laser detection system for the ring workpiece

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