Fig. 2: Design, manufacture, and detection of metasurface.
From: Single-shot 3D imaging with point cloud projection based on metadevice
a Design of projection pattern. The pattern is a type of pseudo random code. b Hamming distance distribution. This can be regarded as an approximate Gaussian distribution, which is similar to the orange curve generated with Gaussian expression. c Phase profile calculated using GS algorithm. d Nanopillars and their spatial distributions based on geometric phase principle.e Transmission coefficients obtained by sweeping the geometric parameters of a nanopillar within a unit cell.f Top-view and side-view SEM images. g Holographic reconstructed image. For the convenience of similarity calculation, we define the sub-window and label, which are shown in the enlarged view. h Correlation of the image set under different depths. Ten images are randomly captured at different depths, and the number of times that the measurements were repeated is 20. Three contour maps of ZNSSD with different depths are displayed.
