Adaptive fringe-pattern projection (AFPP) method is an improvement of fringe projection profilometry (FPP) technique. AFPP method avoids image saturation via reducing the intensity of projection pixels which are corresponding with the shiny areas of the object. To enhance the efficiency of the method, in this paper, we proposed an improved AFPP method that reduces the number of patterns to be projected in preliminary steps. In our proposed method, we introduce epipolar constraints when we match the corresponding pixels between the projector and camera images. We only need to project one direction of phase-shifting fringe patterns instead of two directions, so that the time consumption is reduced by at least half in preliminary steps. The experiment result shows that the proposed matching method guarantees the matching accuracy, and the measurement results are more complete via the improved AFPP method.
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