Efficient multiple phase shift patterns for dense 3D acquisition in structured light scanning

TL;DR: A new 3D dynamic imaging technique, Micro Fourier Transform Profilometry (μFTP), which can realize an acquisition rate up to 10,000 3D frame per second (fps), and reconstruct an accurate, unambiguous, and distortion-free 3D point cloud with every two projected patterns.

TL;DR: 3D scanning is helpful for reverse engineering, analysis, designing and measuring complex curved surfaces, education, architecture, survey, healthcare, quality monitoring, prototyping, development of industrial tools and many more, and this technology uses advanced software for accurate measurement, storage and analysis, which helps increase the process's flexibility and reliability.

TL;DR: In this article , deep neural networks are trained to directly recover the absolute phase from a unique fringe image that involves spatially multiplexed fringe patterns of different frequencies, which is free from spectrum-aliasing problem which is hard to avoid for traditional spatial-multiplexing methods.

TL;DR: This paper proposes a novel Fourier-assisted phase shifting (FAPS) method for accurate dynamic 3D sensing and proposes an efficient parallel spatial unwrapping strategy that embeds a sparse set of markers in the fringe patterns.

TL;DR: A flexible technique to easily calibrate a camera that only requires the camera to observe a planar pattern shown at a few (at least two) different orientations is proposed and advances 3D computer vision one more step from laboratory environments to real world use.

TL;DR: A new computer-based technique for automatic 3-D shape measurement is proposed and verified by experiments that has a much higher sensitivity than the conventional moire technique and is capable of fully automatic distinction between a depression and an elevation on the object surface.

TL;DR: A new and definitive classification of patterns for structured light sensors is presented, based on projecting a light pattern and viewing the illuminated scene from one or more points of view, for recovering the surface of objects.

TL;DR: Fourier transform profilometry is one of the popular non-contact 3D measurement methods, where a Ronchi grating or sinusoidal grating is projected onto a diffuse three-dimensional surface, and the resulting deformed grating image is detected by a CCD camera and processed by a computer as discussed by the authors.