项目名称: 面向远距离多用户虹膜识别的智能光场成像方法研究
项目编号: No.61302184
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 无线电电子学、电信技术
项目作者: 侯广琦
作者单位: 中国科学院自动化研究所
项目金额: 24万元
中文摘要: 虹膜图像获取是虹膜识别的第一个关键步骤,现有虹膜获取方法在成像距离和景深、用户姿态和数量等方面存在诸多局限,制约了虹膜识别系统的大规模应用推广。本项目提出基于光场成像的远距离虹膜图像智能获取方法,通过构建微透镜阵列和多传感器光学系统获取高分辨率可供识别的四维光场数据,利用头部姿态估计、人脸和人眼检测定位技术实现智能人机交互,结合图像拼接、重对焦等图像处理方法共同实现远距离、大景深、高分辨、多用户的便捷式虹膜成像。本项目在虹膜图像信息获取源头创新,建立面向远距离多用户虹膜识别的智能计算型光场成像理论和方法,对于推动虹膜识别和光电工程学科发展具有重要意义,同时有效解决制约虹膜识别技术发展的距离、景深、用户数量等瓶颈问题,拓展虹膜识别系统的应用范围,满足我国关键领域对高精度身份识别技术的迫切需求。
中文关键词: 虹膜识别;光场成像;景深;重对焦;
英文摘要: Iris imaging is the first essential step of iris recognition. The limitations of current iris imaging method in terms of imaging distance, depth of field, posture and the number of users prevent wide applications of iris recognition technology. Therefore we propose a novel iris imaging method based on light-field imaging and intelligent vision algorithms to provide user-friendly iris image acquisition at a distance. Firstly light-field data is captured by the microlens array and multi-sensors optical system, and then computer vision methods for human-computer interaction such as head pose estimation, face detection and eye detection are integrated with image processing methods such as image stitching and digital refocusing to achieve large volume iris image acquisition of multiple subjects at a distance. The innovations of this project will estabilish an intelligent light-field imaging method for long-range iris recognition of multiple subjects and promote the development of iris recognition and opto-electonic engineering technology so that long-range iris recognition systems can be widely used in public security applications.
英文关键词: Iris Recognition;Light Field Imaging;Depth of Field;Refocusing;