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- W3018082302 abstract "In this paper, a calibration method for a camera with focus-related intrinsic parameters based on the thin-lens model is proposed to realize highly accurate measurement for small objects with extended depth of field (DOF). It mainly solves inaccurate calibration and small DOF problems at high magnification of vision systems. The mathematical camera model, initial camera calibration based on the iterative radial alignment constraint (IRAC) and optimization strategy are presented. The effectiveness, accuracy and practicality of the proposed calibration method are verified by both simulations and experiments. The root mean square errors of measured points in the 3D world coordinates with the proposed calibration method decrease from 22.02 μm to 1.66 μm when the magnification of the vision system increases from 0.12× to 0.66×. With the proposed calibration method based on the thin-lens model, accurate measurement, extended DOF and low calibration workload can be achieved." @default.
- W3018082302 created "2020-05-01" @default.
- W3018082302 creator A5007404938 @default.
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- W3018082302 date "2020-06-30" @default.
- W3018082302 modified "2023-10-14" @default.
- W3018082302 title "Camera calibration method with focus-related intrinsic parameters based on the thin-lens model" @default.
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- W3018082302 doi "https://doi.org/10.1364/oe.392731" @default.
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