中国光学2016，Vol.9Issue(6)：633-641,9.DOI:10.3788/CO.20160906.0633
利用激光散斑获取深度图
Depth image acquisition using laser speckle
摘要
Abstract
Compared with the ordinary 2D gray and color images,3D information of target can be obtained by depth image,making the visual identification and human-computer interaction more intelligent.There is no open and real-time method to obtain high quality depth image at low cost at home and abroad.In this paper, based on the principle research on obtaining the depth image by laser speckle,a way to obtain wide range of depth image is presented by laser speckle and the method of template matching.Firstly,the feasibility of the method of template matching is proved in this paper.Then,the formula of depth image is calculated and veri-fied from both theory and experiments.After that,the process of recovering depth image is described in detail, including pretreatment of speckle image and the process of block matching.Finally,the experimental data ob-tained by this template matching method are given.The experimental results show that the precision can reach 5 mm when the objects is 50 cm far from the camera and 5 cm when the object is 200 cm far from the camera by using the method proposed in this paper,which can satisfy the reguirements of most indoor objects'recogni-tion.关键词
激光散斑/深度图/块匹配/块匹配快速算法Key words
laser speckle/depth image/template matching/fast algorithm of template matching分类
信息技术与安全科学引用本文复制引用
张绍阳,侯旭阳,崔华,高小梅..利用激光散斑获取深度图[J].中国光学,2016,9(6):633-641,9.基金项目
中央高校基本科研业务费资助项目（自然科学类）（No．310824152009） Supported by Basic Scientific Research Projects （Natural Sciences） of Central Universities of China （）
