Single-frame color composite grating stripe reflection mirror surface three-dimensional surface shape measuring method
A fringe reflection, composite grating technology, applied in measurement devices, optical devices, instruments, etc., can solve problems such as unfavorable dynamic measurement, slow measurement speed, etc., and achieve the effects of fast measurement speed, high-precision measurement, and high dynamic range.
Active Publication Date: 2014-04-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
However, the fringe reflection method usually projects horizontal and vertical fringes separately, and each direction usually needs to project multi-step fringes to demodulate the phase, so the measurement speed is not fast, which is not conducive to dynamic measurement
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[0035] like figure 1 Shown is the flow chart of the method for measuring the three-dimensional surface shape of the specular surface based on the single-frame color composite grating fringe reflection.
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The invention discloses a single-frame color composite grating stripe reflection mirror surface three-dimensional surface shape measuring method. An experiment system comprises a digital camera, a display screen, a mirror surface to be measured and a computer. The experiment system is adjusted to enable the digital camera to observe the display screen through the mirror surface to be measured, horizontal stripes and perpendicular stripes of different colors are generated simultaneously on the display screen, the digital camera is used for recording deformed stripes through an object with the mirror to be tested, horizontal and perpendicular gradients can be obtained by only projecting one frame of color composite grating stripe to the mirror to be tested throughout the measuring process, and the gradients are integrated to obtain three-dimensional shape information. According to the method, rapid and high-accuracy mirror surface object three-dimensional shape measuring can be achieved.
Description
technical field [0001] The present invention relates to the technical field of measurement of irregular surfaces or contours, in particular to a specular three-dimensional surface shape measurement method based on single-frame color composite grating stripe reflection. Background technique [0002] With the development of precision optical processing, automotive painting, industrial manufacturing and product quality inspection, people are increasingly eager to accurately measure mirrors or mirror-like reflection objects, such as the detection of free-form mirrors or lenses (such as glasses), The control of spray paint quality (orange peel phenomenon) on the surface of automobiles, the quality evaluation of surface processing of precision devices, etc. Through the measurement and analysis of various mirror or mirror-like surfaces, the influence of various parameters (such as grinding speed, grinding materials, mechanical vibration, etc.) in the corresponding manufacturing pro...
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IPC IPC(8): G01B11/24
Inventor 岳慧敏吴雨祥刘永赵必玉张博易京亚欧中华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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