Three-dimensional coordinate measurement method based on light ray angle calibration
A technology of light angle and three-dimensional coordinates, applied in measurement devices, optical devices, image data processing, etc., can solve the problems of fast measurement, fast, real-time, etc., and achieves low hardware requirements, high measurement result accuracy, The effect of simple system structure
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[0017] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] A three-dimensional coordinate measurement method based on light angle calibration, the system model is as follows figure 1 As shown, the display is used as its calibration surface, and the black and white checkerboard plane with grayscale values of 255 and 0 is used as a template, and a checkerboard with an appropriate size is designed according to the screen size and resolution of the display. The display is parallel to X in the world coordinate system w o w Y w Surface, the Z of all pixels on it w Coordinates are fixed values. In order to eliminate the influence of pupil aberration on the system, a diaphragm is set near the lens.
[0019] Step 1: Measure the coordinates of feature points on the external aperture and the plane calibration target
[0020] Add an external light hole in front of the camera lens, measure the...
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