Rainbow three‐dimensional camera: new concept of high‐speed three‐dimensional vision systems

Abstract

A novel principle of a high-speed 3-D camera is presented. This 3-D camera system is able to achieve the instantaneous full-frame 3-D imaging capabilities that no other commercially available 3-D image acquisition systems or 3-D rangefinders can currently achieve. There are no mechanical moving parts in this system, therefore the mechanical design can be very simple and reliable, and there is no ''eye-safe'' problem. The 3-D camera can be integrated using all off-the-shelf products, which leads to a very low production cost and short development period. The 3-D camera is also able to provide normal 2-D intensity image of the scene using a single camera, which will greatly facilitate the object recognition and the sensor fusion tasks in machine vision applications. Simulations and hardware experiments have been performed, and the results are presented.

Pattern codification strategies in structured light systems

“…By calculating the ratio between both images an index for every pixel is obtained that does not depend on illumination, nor on the scene colour. Geng [51] improved on this approach by using a CCD camera and a linear variable wavelength ÿlter in front of it. Hence, only a single image of the measuring surface had to be captured from the scene.…”

Simultaneous three-dimensional geometry and color texture acquisition using a single color camera

“…[5][6][7][8][9] All these methods could successfully measure objects without significant surface color variations. However, their accuracies are affected, to various degrees, by the object surface color.…”

High-resolution, High-speed 3-D Dynamically Deformable Shape Measurement Using Digital Fringe Projection Techniques

“…To measure generic surfaces, at least three fringe patterns must be used (Schreiber & Bruning, 2007). 3-D shape measurement techniques using color-encoded patterns (Geng, 1996;Harding, 1988;Huang et al, 1999;Pan et al, 2005) have the potential to reach high speed because a structured pattern can be encoded with three fringe patterns. However, the measurement accuracy is affected, to a various degree, by object surface color .…”