Measuring system of three-dimensional shape of strong reflecting surface based on high dynamic strip projector
A measurement system and three-dimensional topography technology, applied in measurement devices, instruments, optical devices, etc., can solve the problem of inability to effectively measure measurement accuracy, and achieve high measurement accuracy and adaptability to overcome the influence of background light on measurement. Effect
Active Publication Date: 2013-02-20
BEIHANG UNIV
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The invention relates to a measuring system of a three-dimensional shape of a strong reflecting surface based on a high dynamic strip projector. The measuring system comprises a computer, the high dynamic strip projector and an image acquisition unit. Projection control information is sent to the high dynamic strip projector by the system through the computer, strip images in different light intensities and gray levels are controlled to be projected, meanwhile, control information is sent to the image acquisition unit by the computer, and the image acquisition unit is controlled to carry out photographing in different time periods of exposure; collected image information is transmitted to the computer by the image acquisition unit, the image is processed by the computer, and three-dimensional information of a to-be-detected object is acquired by image fusion, dephasing, phase unwrapping and stereo matching. According to the measuring system of the three-dimensional shape of the strong reflecting surface based on the high dynamic strip projector, saturation and/or excessive darkness of a collected strip image caused by the strong reflecting surface can be overcome, high-precision non-contact optical measurement of the three-dimensional shapes of the strong reflecting surfaces of metals and the like can be realized, and the measuring system of the three-dimensional shape of the strong reflecting surface based on the high dynamic strip projector can be applied to high-precision non-contact optical measurement of the three-dimensional shapes of the strong reflecting surfaces and mirror-similar surfaces of various metals.
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