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- W2022341608 abstract "This paper presents a novel color coding method which is applied to structured light measurement using fringe-patternprojections. The method is based on time coding, and reduces the projection times of fringe patterns with the samenumber of fringes by adding colors into the conventional fringe patterns. But the introduction of colored fringes alsobrings a difficulty in image processing, that is color crosstalk. To address this problem, sinusoidal fringe patterns withfour colors of white, red, green and blue are used to project to the measured object surface to reduce the edge effect.Based on those ideas and methods, a three-dimensional measurement system is built, and the direct linear transform(DLT) method of calibration with lens distortion corrected by cross ratio invariance principle is used to calibrate theinternal and external parameters of the system. Then the parameters of the system are optimized by the bundleadjustment method. Finally, a standard metal hemisphere with spraying is measured, and the experimental results showthat with the same times of projection, the lateral measurement resolution is higher than the traditional method, and themeasurement accuracy of the depth direction is about 0.27mm." @default.
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- W2022341608 date "2011-06-09" @default.
- W2022341608 modified "2023-09-23" @default.
- W2022341608 title "A novel color coding method for structured light 3D measurement" @default.
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- W2022341608 doi "https://doi.org/10.1117/12.889317" @default.
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