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Fig. 1 | Robotics and Biomimetics

Fig. 1

From: Improved 3D measurement with a novel preprocessing method in DFP

Fig. 1

Comparison between dark background and white background. a One of captured fringes on the object with dark background, b modulation distribution of the captured fringes, c modulation histogram, d one of the captured fringes on the object with a white background, e modulation distribution of the captured fringes, f modulation histogram. In f, the lower threshold t 1 is for shadow and interior invalid points detection, and the upper threshold t 2 is for background detection

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