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Real-scene 3D measurement algorithm and program implementation based on Mobile terminals
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DOI：10.1007/s11042-023-15595-4.png)
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Abstract
En 中文
For real-scene three-dimensional (3D) Location Based Service (LBS), in order to overcome the defects of the poor spatial analysis and computing ability of 3D visualization based on images, the research deduces algorithms and designs schemes to realize the real-scene measurement on mobile terminals for homologous photographs with inner and outer directional elements according to the principle of close-range photogrammetry. The research proposes two methods of recognition and matching image feature points in different scenarios, and designs schemes including the preprocessing of image zooming, auxiliary selecting and prediction and display of feature points, so as to solve the problem of accurately recognizing the same ground point in the left and right photographs on mobile devices with a small screen. Then we program the above algorithm in Android system to realize real-scene images based 3D coordinate measurement and geometric measurement on smartphone terminals. At last, we carry out real-scene measurement experiment, data solving and error analysis using experimental calibration field data and measured data. The results show that the method proposed in the research can achieve real-scene measurement on mobile terminals, with certain guarantees for algorithm accuracy and execution efficiency.
Keywords:
Real-scene 3D
Real-scene measurement
Measurement based on images
Photographs matching
Mobile terminals
Journal
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3
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2.0W
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3.2W
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