Threshold value dividing method based on single-pixel in three-dimensional scanning system
A technology of threshold segmentation and three-dimensional scanning, applied in image enhancement, image data processing, instruments, etc., can solve problems such as difficult to distinguish black and white stripes, poor image distinction, weak anti-noise ability, etc., and achieve high computing speed Fast, clear segmentation, simple effect
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[0037] The specific implementation manners of the present invention will be further described below in conjunction with the drawings. According to the above method, the operation of fringe image segmentation by threshold value is realized by programming in C++ through VC++6.0 platform in Windows operating system. This example is to perform threshold segmentation on the projected raster image of an uncoated motorcycle fender with low contrast of black and white stripes in a 3D scanning system. It mainly includes the following steps:
[0038] 1) Design a group of grating projection patterns that adopt gradual dichotomy: there are two black and white stripes in the first coarse grating image, and the second coarse grating image equally divides the black and white stripes in the first image to obtain four alternating black and white stripes stripes, and so on, the nth rough raster picture equally divides the stripes in the n-1th rough raster picture, and 2 n Alternating black an...
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