| The modern network enviroment is changing and developing,computer related technology is incresingly progressing,the costs of the storage device are falling sharply, the network transmission rate is increasing rapidly.A mass of videos are shared, we can get plenty of video resources by searching websites, video search engine or professional video websites.Video resources involve many areas, including entertainment, sports, finance, fashion, education, science and technology, etc. The use of video resources are beneficial to improve the quality of the users’learning and enrich the users’daily life.To meet the needs of agricultural development and the users, agricutural video resources become essential information resources to promote agricultural development. Agricultural video resources are "Audio visual",this characteristic is favored by the vast number of users.But agricultural video resources’ wide coverage, huge quantity and different quality result in bad organization effect of agricultural video resource.Considering that,in order to realize the agricultural video resources’effective organization, management, query and sharing,I research on content indexing of agricutural video resources based on application of Internet.To index agricutural video resourcesis in order to store,organize and search the related data effectively.Main content of this thesis:Chapter 1 puts forward the research question, analyzes the domestic and foreign research, introduces the researching purpose,research significance, research mentality, research methods and innovation points in this paper.Chapter 2 defines the concept of agricutural video resources, summarizes the classification and characteristics of agriculture video resources, analyzes the present situation of agricutural video resources’application, finds that there is currently no scientific classification of the agricutural video resources, this is the problem needed to be resolved urgently in content indexing of the agricultural video resources.Chapter 3 analyses the necessity and feasibility of the agricutural video resources classification system’s establishment.I collected a large number of literature data, surveyed the network data,absorbed excellent scholars’ research results, combined related knowledge,regarded the classification principles and methods as a guide for exploring classification system of agricuturalvideo resources preliminarily.Chapter 4 introduces that the description of agricutural video resources can be divided into general description and content description.Content indexing is formation identity which based on content description.This chapter studies how to realize the structured indexing that based on the content of agricutural video resources. The steps are as follows, firstly,structuring the content of agricutural video resources. Secondly, determining the metadata item of each level which needed to index.Finally,realizing the content indexingof agricutural video resources layer by layer. This chapter puts forward content indexing standard of agricutural video resources.Chapter 5 carries on the example analysis, takes a program of "Mei Ri Nong Jing" as a case to analyse,illustrates the agricutural video how to determine the video indexing unit and indexing items for content indexing.Chapter 6 summarizes the maincontent of the paper and makes a prospect,the research results are applied to the practice. |
