GCSR: Gray Code Super-Resolution 3D Scanning


Peter S Walecki and Gabriel Taubin


Digital pattern projectors used in structured light 3D scanners cannot project infinitesimally thin columns of light -- the projector pixel columns have a finite thickness. Current methods incorrectly model these columns of light as planes, which contributes to reconstruction errors. We propose a method to increase the resolution of structured light 3D scanners based on time-multiplexed discrete patterns by taking multiple acquisitions of the scene with different projector poses, and by modeling the light projected by each pixel column as a volume in space instead of as a plane, which results in upper and lower bounds on the resulting depth map. Furthermore, by analyzing multiple acquisitions in different projector poses, these upper and lower depth bounds can be tightened. We refer to this tightening as superresolution, because it corresponds to an increase in the confidence in the location of the object's surface. We describe our first implementation of such a system, and demonstrate its performance on a variety of objects.

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  Important Dates

All deadlines are 23:59 Pacific Time (PT). No extensions will be granted.

Paper registration July 23 30, 2021
Paper submission July 30, 2021
Supplementary August 8, 2021
Tutorial submission August 15, 2021
Tutorial notification August 31, 2021
Rebuttal period September 16-22, 2021
Paper notification October 1, 2021
Camera ready October 15, 2021
Demo submission July 30 Nov 15, 2021
Demo notification Oct 1 Nov 19, 2021
Tutorial November 30, 2021
Main conference December 1-3, 2021