Fig. 9
From: Phase disambiguation using spatio-temporally modulated illumination in depth sensing
Results with a white planar board. Ordinary ToF, phase shifting (single high frequency), and our method are compared. a The object was placed at a slight slant. b The estimated depth images. Because the depth cannot be identified in the phase shifting, the depth image cannot be visualized. c The cross-section of the red line is shown. While the ordinary ToF is noisy and phase shifting has many candidates, our method recovers a smooth and unique depth candidate