3D measuring method based on two-dimensional code
A technology of three-dimensional topography and measurement method, which can be used in measurement devices, instruments, optical devices, etc., and can solve the problems of low coding efficiency, low coding accuracy, and inability to realize image coding.
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[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0028] As shown in Figure 1, the step of the inventive method comprises:
[0029] (1) Prepare the grating, the requirements of the grating are:
[0030] The grating is divided into checkerboard grids. The first grating is divided into four squares, the second is sixteen, and the third is four. 3 squares, the Nth is 4 N squares, and N is the number of gratings. The number of gratings can be selected according to needs, and six gratings are selected here. X and Y are the horizontal direction and the vertical direction of the grid respectively, and two grayscale pixels are set between 0-255, and the selected two grayscale levels are set as: 0, 1. The X direction is 0, 1; the Y direction is also 0, 1. We superimpose these two gray levels in the X direction and Y direction of the grid. Here we write each square in the form of (m, n), where m and n represent b...
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