Abstract
The paper proposes the phase triangulation method with an optimization of spatial modulation frequency. The optimal frequency is calculated based on the analysis of the amplitude-frequency characteristics of the measuring optical path according to the data obtained during the formation of structured images encoding the binary Gray code. The proposed approach makes it possible to use the optimal frequency of optical source spatial modulation in the 3D geometry measurements using phase steps triangulation and binary Gray code approaches. As a result, the method provides the minimum level of measurement error, regardless to parameters of the used optical-electronic elements of the measuring system.
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