Optimum projection pattern generation for grey-level coded structured light illumination systems

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• 作者：Rosario Porras-Aguilar^a ; ^b ; ^{rporras@inaoep.mx} ; Konstantinos Falaggis^b ; ^c ; Ruben Ramos-Garcia^b
• 关键词：Structured light illumination systems ; Grey level coding ; Phase unwrapping ; 3D shape measurements ; Travelling salesman problem ; Fringe projection
• 刊名：Optics and Lasers in Engineering
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：91
• 期：Complete
• 页码：242-256
• 全文大小：2575 K
• 卷排序：91

文摘

Generation of projection patterns with a minimal intensity gradients. This technique can be employed with an arbitrary number of frames and grey-levels. The problem of "minimizing the intensity gradients" is transferred to "finding the shortest route through code-space". The equivalent problem is solved using a “Travelling Salesman Problem” solver. Technique improves Color-coding techniques by optimizing the 3D color-space. Less measurement planes are required than sinusoidal SLI without losing accuracy.