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Fig. 2 | IPSJ Transactions on Computer Vision and Applications

Fig. 2

From: Phase disambiguation using spatio-temporally modulated illumination in depth sensing

Fig. 2

Tradeoff among the depth resolution, the range of interest, and the number of measurements. The dashed blue line represents the low frequency phase, and the solid line represents the high frequency. Horizontal red bands represents the resolution of the measured phase. Intersections of the blue lines and the horizontal red bands (depicted as red circles) are the candidate depth, and the corresponding depth resolution is illustrated as vertical red bands. a, b While the resolution in phase is the same, the corresponded depth resolution vary depending on the frequency. With higher frequency, better depth resolution is obtained; however, there is depth ambiguity. c Using multiple frequencies, the range of interest can be extended to the frequency of the greatest common divisor, and the depth resolution is determined by the highest frequency. d The bottom table summarizes the trade-off

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