An Adaptive High Dynamic Range 3D Measurement Method Based on Gray Histogram
A gray histogram, high dynamic range technology, applied in the field of optical measurement, can solve the problems of inconvenient use, troublesome operation, lack of optical measurement methods, etc., to achieve the effect of improving efficiency, accurate results and high practical value
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[0014] The present invention is an adaptive high dynamic range three-dimensional measurement method based on grayscale histogram, which determines the reflectance distribution of the measured object and the optimal exposure required for each reflectance by analyzing the grayscale histogram of the measured object Time; using multiple exposure technology, according to the optimal exposure time required for each reflectivity, the object under test is exposed separately, and the images taken by the object under different optimal exposure times are obtained, and then the different optimal exposure time The images taken at different times are fused to restore the three-dimensional shape of the measured object. Such as figure 1 As shown, the specific steps are as follows:
[0015] Step 1: Use a projection device to project uniform white light to the object under test, and then use a camera to capture the object under test to obtain an image I 0 , while recording the captured image ...
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