移动相机虚拟阵列合成孔径成像与视频目标跟踪研究

项目名称： 移动相机虚拟阵列合成孔径成像与视频目标跟踪研究

项目编号： No.61272288

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 杨涛

作者单位： 西北工业大学

项目金额： 80万元

中文摘要： 复杂场景与遮挡条件下的高性能透视成像探测与目标自动跟踪是当前无人机机载光电侦察的核心难题之一。本项目从探测技术的革新入手，首次将相机阵列合成孔径成像这一强有力的新型视觉信息探测理论与无人机机载成像相结合，用无人机平台上的单个光学传感器模拟一个孔径大小可变的虚拟移动相机阵列，提出可变孔径机载光学虚拟阵列构建,基于虚拟标定与可视度分析的移动阵列透视成像,移动阵列动态焦平面估计与目标跟踪等新方法，将传统的机载单摄像机二维平面成像扩展为移动虚拟光学阵列三维立体成像，对目标和环境进行多层次、立体化的透视成像探测，从新的角度解决目前制约无人机机载光电侦察与预警的主要难点问题，为实现高精度预警侦察、态势感知与精确定位提供重要的技术支撑。本项目的研究在目标探测与环境感知、航拍视频内容分析、智能视觉监控等领域据具有重要的理论和应用价值。

中文关键词： 相机阵列；合成孔径成像；遮挡透视成像；目标跟踪；视频监控

英文摘要： High performance occluded object imaging and tracking in complex scene is one of the key problem of existing UAV aerial photoelectric reconnaissance.Starting from the innovation of imaging technology,this project for the first time fuses the powerful and novel camera array syntheture aperture imaging theory with UAV aerial video surveillance, and uses the single camera of UAV to simulate a virtual moving camera array with scalable apeture.Through presenting several novel methods, include the airborne optical virtual array building with scalable apeture, virtual acalibration and visibility analysis based moving camera synthetic aperture imging, and optical dynamic focus plane estimation and visual tracking,this work extends the traditional airborne two dimension planar imaging to a novel virtual optical array based three dimension imaging.Based on the unique characteristics of syntehtic aperture imaging,our work can acquire multilevel informaiton of observed target and scene,and provide essential technical support for high performance object detection and situational awareness.This project has important theoretical and application value in the fields of target detection and environmental perception, aerial video content analysis and intelligent video surveillance.

英文关键词： camera array；synthetic aperture imaging；seeing through occlusion；object tracking；video surveillance