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Fig. 9 | Robotics and Biomimetics

Fig. 9

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

Fig. 9

Shadow and background removal comparison 2. a The modulation histogram, b the intensity difference histogram, c object segmented by single threshold t 1, d object segmented by t 1 and t 2 based on modulation, e object segment by t 1 from modulation and t in from intensity difference histogram when utilizing a nearly focused projector; slightly defocused projector (f)–(j); and strongly defocused projector (k)–(o)

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