To acquire projecting angle of projecting light accurately,method for encoding and decoding by combining Gray code with phase-shift is presented in this paper,that can divide projecting angle space continuous- ly.a kind of phase-shift projecting pattern for measurement system and phase equations was presented,then Com- bining phase with Gray code corresponded by sampling points,absolute phase was acquired,and the transfoming e- quations from absolute phase to projecting angle are presented,so projecting ang...

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