基于Android的教学视频检索系统

发布时间：2018-04-12 14:25

本文选题：教学视频 + Android　；参考：《合肥工业大学》2014年硕士论文

【摘要】：随着多媒体技术的发展,远程教学得到了大力普及,人们已经习惯从网络视频教程中获取知识,但是面对快速增长的教学视频资源,如何高效地从这些海量视频信息中检索自己感兴趣的内容非常重要,用户希望给定关键字作为查询,能够快速、准确地返回相应的视频列表。而移动互联网时代的到来,手机将会成为人们未来不可或缺的设备,教学视频检索系统在移动端上的应用缺失,已经成为一个不容忽视的问题。针对上述的问题,本文的目的是在Android智能机上实现教学视频检索系统。本文的研究内容如下：1.概述了目前主流的视频检索技术,调研了国内外教学视频的研究现状,并分析了现有方法的一些不足之处,提出本文的思想：利用语音识别引擎Sphinx将视频中的音频转化为文本后,再通过Lucene实现检索功能。2. Lucene检索默认的排序是根据检索得到的文档得分排序的,本文引入用户评分机制,系统可以结合反馈的评分对搜索到的视频进行多样性排序,以满足用户的不同需求。3.本文最终的目标是实现一个基于Android的应用,通过与服务器后台通信,使用户能够更方便、自由地利用教学视频获取新知识。该应用可以实现登陆功能、视频列表、视频检索、视频播放等功能。
[Abstract]:With the development of multimedia technology, distance learning has been popularized. People have been used to acquiring knowledge from online video courses, but in the face of the rapid growth of teaching video resources,How to efficiently retrieve the content of interest from these massive video information is very important. Users hope that given keywords as a query can quickly and accurately return the corresponding video list.With the advent of mobile Internet, mobile phone will become an indispensable device in the future. The lack of application of instructional video retrieval system on mobile side has become a problem that can not be ignored.Aiming at the above problems, the purpose of this paper is to realize the teaching video retrieval system on Android smart machine.The contents of this paper are as follows: 1.This paper summarizes the current mainstream video retrieval technology, investigates the current research situation of teaching video at home and abroad, and analyzes some shortcomings of the existing methods.The idea of this paper is as follows: after the audio in the video is transformed into text by using the speech recognition engine Sphinx, the retrieval function. 2. 2 is realized through Lucene.The default sort of Lucene retrieval is based on the document score. In this paper, a user scoring mechanism is introduced. The system can combine feedback rating to sort the searched video in order to meet the different needs of users.The ultimate goal of this paper is to realize an application based on Android. By communicating with the server backstage, users can acquire new knowledge more conveniently and freely by using instructional video.The application can achieve landing function, video list, video retrieval, video playback and other functions.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.41;G434

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