大场景高速旋转下直升机旋翼桨叶运动参数立体视觉测量方法研究

项目名称： 大场景高速旋转下直升机旋翼桨叶运动参数立体视觉测量方法研究

项目编号： No.61462063

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 计算机科学学科

项目作者： 熊邦书

作者单位： 南昌航空大学

项目金额： 46万元

中文摘要： 旋翼桨叶运动参数测量技术关系到直升机的安全性、舒适性、可靠性和武器系统的准确性，是直升机研制、生产和维护的重要检查项目，在立体视觉测量方法上取得了一些成果，但仍存在标定方法和误差校正方法不适用于大场景环境和高速旋转测量对象的问题。本项目以直八、直十一为试验对象，构建试验平台，用于新原理、新算法的验证和分析；采用几何分析法，建立三维视场区域与二维图像中像素之间的几何模型，分析大场景环境、高速旋转对象影响测量精度的机理，为误差校正方法研究提供理论指导；采用多个平面和多个一维靶标组成阵列靶标的方法，提出适合大场景环境的高精度标定方法；采用标记点编码、非线性优化、数理统计、曲面重建等方法，提出高精度的桨叶运动参数测量方法，并实现桨叶形变的三维可视化。预期成果将给出高精度的桨叶运动参数立体视觉测量方法，丰富、扩充和发展直升机检测技术，为我国开发具有自主知识产权的旋翼桨叶运动参数测量仪器提供核心方法。

中文关键词： 大场景；高速旋转；旋翼桨叶运动参数；计算机视觉；摄像机标定

英文摘要： Measurement technology of the motion parameters of helicopter rotor blades is an important inspection item of research, production and maintenance of helicopters, which concerns safety, convenience and reliability of helicopters and accuracy of weapon systems. Some achievements have been gained in measurement methods of the stereo vision, however, the existing calibration methods and error revising methods can hardly be applied to large-scale scenes and measured objects of high speed. In this project, Z-8 and Z-11 are taken as testing objects and a test platform is established to verify and analyze the new principle and algorithm. Geometry analysis method is used to establish geometric model between three-dimensional field region and pixels of two-dimensional image and analyze the mechanism how large-scale scenes and objects of high speed affect measurement accuracy, which provides theoretical guidance for research of error correction methods. Array target method which consists of multiple planes and multiple one-dimensional objects is used to propose a calibration method which is suitable for large-scale scenes and high accuracy. Methods like mark coding, nonlinear optimization, mathematical statistics and surface reconstruction are used to propose measurement methods of the motion parameters of helicopter rotor blades with high accuracy and 3D visualization of blades deformation is realized.A practical and highly accurate measurement technology of the motion parameters of helicopter rotor blades is expected to be gained, which will not only enrich, expand and improve detection technology of helicopter, but also provide a core method for our country to develop measuring apparatus of the motion parameters of helicopter rotor blade with independent intellectual property rights.

英文关键词： large-scale scenes;high speed rotating;motion parameters of rotor blade;computer vision;camera calibration