摘要
提出了一种基于散焦图像移动目标深度测量的方法 .该方法采用一台带有远心镜头的CCD摄像机 ,沿光轴方向移动目标拍摄两幅图像 ,根据所拍摄景物图像的散焦半径与图像大小计算目标景物距摄像机的距离 .采用远心光学镜头代替普通镜头可使图像的大小与散焦半径之间的关系简单 .该方法融合了图像的大小与散焦半径两个信息 ,使深度计算更加准确 .由于该方法只需要一台参数固定的 CCD摄像机 ,可以免除图像间的配准和特征点的选取 ,有利于实时系统的实现 .
A new method for depth measurement of mobile object based on defocus images was proposed. This method uses a single standard CCD camera with telecentric lens, moving object along optical axis, images are taken at the two object position. According to the defocus radius and magnification of images, the depth is calculated. The relation between magnification and blurring can be simplified by using telecentric lens instead of traditional lens. Fusing the two disparate sources of depth information, magnification and blurring, the proposed method provides more accurate depth calculation. The experimental results demonstrate the effectiveness of the proposed method.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2001年第11期1671-1674,共4页
Journal of Shanghai Jiaotong University
