无人航拍机高清抖动影像后期去抖方法研究

发布时间：2019-02-16 11:28

【摘要】：传统的影像去抖研究大都是基于电视影像输出信号为研究对象的稳像研究,这种研究主要是利用电子稳像算法对电视影像图像进行稳像的仿真实验研究。随着无人航拍机的广泛应用,如何提高无人航拍机拍摄的影像质量,去除拍摄中各种飞行运动引起的影像抖动,消除不规则的随机运动对航拍中所获取的影像序列造成的模糊和抖动,保障高清抖动影像足够的稳定性和清晰度,以准确传达重要的区域信息,这成为无人航拍机航拍高清抖动影像运用中最重要的话题,具有较强的研究价值和广泛的应用领域。本文针对无人航拍机高清抖动影像去抖的必要性,介绍了无人航拍机的系统构成,分析了无人机航拍高清影像抖动产生的原因,指出了无人机航拍关键参数的设置。之后,针对无人航拍机高清抖动影像进行去抖分析,并在学习和研究相关稳像处理技术之后,提出了无人航拍机高清抖动影像去抖的另一种方法——基于ProDAD Mercalli软件的影像去抖应用,并对其效果进行相对科学的比对和分析,同时提供了评测方法。文中实验所用的数据采集设备是作者自行搭建的多旋翼无人航拍机,实验数据取自于实际航拍的高清抖动影像,基本反映出了无人航拍机实际作业过程中,受无人航拍机的飞行平台、摄像系统和电子减震设备等引起的姿态变化和振动的影响,使获得的高清抖动影像信号包含了许多不规则的随机运动,从而引发不同的影像抖动。文中实验方案目的明确,实验对象系统全面,实验数据具有较强的典型性和客观性,有较强的实用参考价值。
[Abstract]:The traditional image de-shake research is mostly based on the video image output signal as the object of study, this research is mainly using electronic image stabilization algorithm for television image stabilization simulation experimental research. With the wide application of unmanned aerial camera, how to improve the image quality of unmanned aerial camera and remove the image jitter caused by all kinds of flight motion, Eliminating the ambiguity and jitter caused by irregular random motion to the image sequence acquired in aerial photography, ensuring the stability and clarity of the high-definition jitter image, so as to accurately convey important regional information. This has become the most important topic in the application of aerial camera high-definition jitter image of unmanned aerial camera, and has strong research value and wide application field. In this paper, aiming at the necessity of detrembling of high-definition jitter image of unmanned aerial camera, this paper introduces the system structure of unmanned aerial camera, analyzes the causes of aerial camera high-definition image jitter, and points out the setting of key parameters of aerial camera of UAV. After that, the high-definition jitter image of unmanned aerial camera is analyzed, and after studying and researching the technology of image stabilization, In this paper, another method of dejitter of high-definition jitter image of unmanned aerial camera is presented, which is based on ProDAD Mercalli software, and its effect is compared and analyzed scientifically. At the same time, the evaluation method is provided. The data acquisition equipment used in the experiment is the multi-rotor unmanned aerial camera built by the author. The experimental data are taken from the high-definition jitter image of the actual aerial camera, which basically reflects the actual operation process of the unmanned aerial camera. Under the influence of attitude change and vibration caused by the flight platform, camera system and electronic shock absorber of unmanned aerial camera, the obtained high-definition jitter image signals contain many irregular random motions, thus causing different image jitter. The purpose of the experiment scheme in this paper is clear, the experimental object system is comprehensive, the experimental data has strong typicality and objectivity, and has strong practical reference value.
【学位授予单位】：华侨大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.41

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