【作者】 赵晓飞；

【导师】 陈良益；

【作者基本信息】 中国科学院研究生院（西安光学精密机械研究所） ， 光学工程， 2005， 硕士

【摘要】 尾流即运动的气泡幕。尾流光学特性及其应用是国内外科学研究的一个新领域,在军用和民用方面有着重要的意义。运动气泡的研究是尾流研究的基础,利用数字图像处理技术研究运动气泡幕是一种全新的探测分析方法。它与传统的运动气泡探测分析方法相比,具有直观、实时、高效、易于工程化等优点。对运动气泡光学特性、几何特性和运动特性的研究结果可以广泛地应用到很多领域,例如鱼雷制导、舰船推进、水质监测、医学超声、海洋鱼群探测等。本文根据对运动气泡幕的光学特性、探测技术和探测器特性分析,设计了一套运动气泡图像采集分析系统。首先,根据气泡的特性,分析图像采集系统的要求,选择合适的照明方式、拍摄器件和数据传输器件,在此基础上,搭建了运动气泡图像采集平台,采集了大量适合后续处理的气泡图像;其次,根据不同的拍摄方式,将获取的气泡图像分为静态运动气泡图像、动态运动气泡图像和序列静态运动气泡图像三种类型,针对每一类图像的特点和图像中可能包含的气泡特性,建立了不同的运动气泡图像处理流程;第三,对于不同处理流程中应用的各类图像处理技术进行了详细的算法分析、选优,使整个运动气泡图像处理流程完整化、实用化。最后,对获得的各类运动气泡图像进行了处理,从中获得运动气泡幕中气泡的几何特性和运动特性,验证了三种运动气泡图像处理流程和流程中各类图像处理技术具体算法的可行性。更多还原

【Abstract】 Wake is motive bubble film. Wake optical characteristics and application is a new domain of international and national science research, it has a important significance in military and civilian industry. Wake is motive bubble film, research of motive bubble is basis of Wake research. Using digital image process technology is a fire-new detection and analytic method. Compare with traditional method of motive bubble detection and analysis, it has some advantages, such as visibility, real time, high-efficient, easily realized in projects, and so on. Motive bubble’s research result in optical, geometrical and movable characteristics widely applied in many domains. For example, guidance and control of fish torpedo, thruster of ship, supervision of water quality, medical ultrasonic instrument, ocean fish detection, etc. This dissertation put forwards a set of motive bubble image collection and analysis system, based on analysis of motive bubble film’s optical characteristic, detective technology and detector characteristic. Firstly, according the character of motive bubble, analyse the requirements of image collection system, choose appropriate illuminating method, camera and data transfer device; based on those, build a motive bubble image collection platform. Collect a lots of bubble images which adapt to successive process. Secondly, based on different photographic method, bubble image is divided to static state motive bubble image, dynastic motive bubble image and sequence motive bubble image; according to each kind of image’s peculiarities and possible bubble characteristic included in image, build different process procedure of motive bubble image. Thirdly, According to the result which detailedly analyse and choose optimum algorithms of every image process technologies applied in different process procedures, make whole motive bubble image process procedure integrity and realization. Finally, Using image process technology process the each kind of motive bubble image which get from experience, get the geometrical and movable characteristics of bubbles in motive bubble film, prove the feasibility of three kinds of motive bubble image processprocedures and detailed algorithms of every image process technologies in procedures.更多还原