Adaptive Color Calibration Based One-Shot Structured Light System

Sensors

Yu Zhou¹  Dongwei Zhao²  Yao Yu²  Jie Yuan² 

[1] School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, Jiangsu, China;

关键词: 3D image acquisition;    adaptive color calibration;    discrete trend transform;    structured light;   

DOI  :  10.3390/s120810947

来源: mdpi

【 摘 要 】

In one-shot color structured light systems, the color of stripe patterns are typically distorted with respect to color crosstalk, ambient light and the albedo of the scanned objects, leading to mismatch in the correspondence of color stripes between the projected and captured images. In this paper, an adaptive color calibration and Discrete Trend Transform algorithm are presented to achieve high-resolution 3D reconstructions. The adaptive color calibration, according to the relative albedo in RGB channels, can improve the accuracy of labeling stripe by alleviating the effect of albedo and ambient light while decoding the color. Furthermore, the Discrete Trend Transform in the M channel makes the color calibration an effective method for detecting weak stripes due to the uneven surfaces or reflectance characteristics of the scanned objects. With this approach, the presented system is suitable for scanning moving objects and generating high-resolution 3D reconstructions without the need of dark laboratory environments.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.