Research on a Precision and Accuracy Estimation Method for Close-Range Photogrammetry

Ma, Kai-Kuang; Huang, Guiping; Xu, Haijun; Wang, Weifeng

doi:10.1142/s0218001419550024

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…By analysing the binocular vision system to adaptively adjust the weight of the observation points at different distances, the positioning accuracy in the depth direction is significantly enhanced, and the reliability of the adaptive‐weighting least‐squares strategy is also demonstrated. Additionally, the internal accuracy is further calculated by covariance matrix and unit weight variance to evaluate the performance of BA (Ma et al., 2019; Triggs et al., 2000). The internal accuracy of unweighted BA with joint segments is 4.7 mm, and is improved to 4.0 mm using iterative reweighting.…”

Section: Resultsmentioning

confidence: 99%

Dynamic measurement of a long‐distance moving object using multi‐binocular high‐speed videogrammetry with adaptive‐weighting bundle adjustment

Tong,

Gao,

et al. 2024

The Photogrammetric Record

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The dynamic measurement of position and attitude information of a long‐distance moving object is a common demand in ground testing of aerospace engineering. Due to the movement from far to near and the limitations of camera resolution, it is necessary to use multi‐binocular cameras for segmented observation at different distances. However, achieving accurate and continuous position and attitude estimation is a challenging task. Therefore, this paper proposes a dynamic monitoring technique for long‐distance movement based on a multi‐binocular videogrammetric system. Aiming to solve the problem that the scale in images changes constantly during the moving process, a scale‐adaptive tracking method of circular targets is presented. Bundle adjustment (BA) with joint segments using an adaptive‐weighting least‐squares strategy is developed to enhance the measurement accuracy. The feasibility and reliability of the proposed technique are validated by a ground testing of relative measurement for spacecraft rendezvous and docking. The experimental results indicate that the proposed technique can obtain the actual motion state of the moving object, with a positioning accuracy of 3.2 mm (root mean square error), which can provide a reliable third‐party verification for on‐orbit measurement systems in ground testing. Compared with the results of BA with individual segments and vision measurement software PhotoModeler, the accuracy is improved by 45% and 30%, respectively.

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Section: Resultsmentioning

confidence: 99%

Dynamic measurement of a long‐distance moving object using multi‐binocular high‐speed videogrammetry with adaptive‐weighting bundle adjustment

Tong,

Gao,

et al. 2024

The Photogrammetric Record

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show abstract

“…For the length measurement accuracy of the industrial photogrammetry system, a dualfrequency laser interferometer (with a length uncertainty of 0.1 µm + 0.1 µm m −1 ) can be used to mark the length with high precision. It can be employed as the true value of the length and compared with the length measured by the corresponding industrial photogrammetry system to evaluate the length measurement accuracy of the industrial photogrammetry system [20].…”

Section: External Coincidence Accuracy Testmentioning

confidence: 99%

Retro-reflective target with high accuracy for industrial photogrammetry

Huang¹,

Huang²,

Zhang³

et al. 2022

Meas. Sci. Technol.

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Retro-reflective targets (RRTs) are important for obtaining the coordinates of the surface points of objects measured using industrial photogrammetry systems. Targeting the low measurement accuracy caused by the poor roundness of the conventional RRT, a novel RRT was designed in this study by covering a die-cut slice with round holes and high roundness on a glass bead reflective film. The roundness of this novel RRT was on average 0.03 mm higher than that of the conventional RRT. The accuracy of the novel RRT was evaluated in terms of both internal and external coincidence accuracies. The measurement repeatability accuracy of the novel RRT was improved by 25.0% compared with that of the conventional RRT. The thinner the die-cut slice thickness, the higher the repeatability in a certain range. Similarly, the plane fitting, flatness measurement, and standard length measurement accuracies were improved by 30.7%, 34.1%, and 28.1%, respectively.

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Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology

Isa

Sims-Waterhouse

Piano

et al. 2020

Precision Engineering

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Research on a Precision and Accuracy Estimation Method for Close-Range Photogrammetry

Cited by 3 publications

References 2 publications

Dynamic measurement of a long‐distance moving object using multi‐binocular high‐speed videogrammetry with adaptive‐weighting bundle adjustment

Dynamic measurement of a long‐distance moving object using multi‐binocular high‐speed videogrammetry with adaptive‐weighting bundle adjustment

Retro-reflective target with high accuracy for industrial photogrammetry

Volumetric error modelling of a stereo vision system for error correction in photogrammetric three-dimensional coordinate metrology

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