An encoded mini-grid structured light pattern for dynamic scenes

Abstract

This paper presents a structured light pattern for moving objects sensing in dynamic scenes. The proposed binary pattern can be projected by laser illumination, which aims at eliminate the affect of ambient sunlight, so as to widen application fields of depth sending approach based on structure light. Without the help of color information, the binary can provide great number of code words to make all sub-pattern own a globe unique code to make it suitable for moving objects sensing at one-shot. The propose patter offers more measurement spots than traditional patterns based on M-array, so as to acquire higher resolution. In this paper, the proposed pattern and codification are firstly presented. A new algorithm for fractured contour searching and searching strategies are discussed. An algorithm based on angle variation for contour character identification is given. Code points mapping and mapping regulations are also presented. © Springer-Verlag Berlin Heidelberg 2005.