Page 186 - JOURNAL OF LIBRARY SCIENCE IN CHINA 2018 Vol. 42

Extended English abstracts of articles published in the Chinese edition of Journal of Library Science in China 2016 Vol.42 185

flash movie with specific components or structures. In this paper,a new method of flash movie
retrieval based on component and structure is proposed. A flash movie can be retrieved based
on name,keyword,and/or type,number of scenes,number of components,number of dynamic
effects,interaction,complex and main colors of scenes in the flash movie,etc. The scenes’
summary of the retrieved flash movie is presented in the retrieval result feedback. Compared with
the existing methods,the proposed method is more effective for the search of flash movies with
complicated components and structures,and meets the requirements of various kinds of users of
searching for the specific contents of flash movies.
The component and structure features of a flash movie are described by the overall
features,the features of logic scenes,visual scenes and components. The overall features include
type,name,URL,page URL,file size,width,height,number of frames,keyword,interaction,nu
mber of logic scenes,number of visual scenes,summary of scenes. A logic scene in a flash movie
is a sequence of frames that can be played continuously,which is used to complete an independent
function in a flash movie. A visual scene of a flash movie is a sequence of continuous frames that
look similar. The components of flash movie are graphics,images,texts,audios,videos,morphs
,movie clips,buttons,etc. The structure of a flash movie is made up of scenes and components.
The summary of scenes in a flash movie is a Gif dynamic image which is composed of the middle
frames of all visual scenes in the flash movie,and shows the main content of the flash movie. The
features of logic scenes,visual scenes and components are the numbers,visual features and the
numbers of dynamic effects. The component and structure features of a flash movie are extracted
by analyzing the tags and their parameters in the SWF file of a flash movie.
The flash movie retrieval system based on component and structure consists of four functional
modules,including network search,webpage analysis and flash movie download,component
and structure feature extraction and retrieval. The flash movie retrieval program established 25
retrieval conditions which are divided into 6 basic retrieval conditions and 19 advanced retrieval
conditions. Retrieval feedback results include the scene’s summary of the flash movie and
URL,web URL,etc. 2,108 websites (including 73,012 website channels) are selected and pages
containing flash movies are searched. The 25,133,452 web pages are visited on breadth first search
rule including 4,100,789 web pages which contain flash movies,and 539,828 independent flash
movies are downloaded and processed to set up the index database. The flash movie retrieval
experimental system based on component and structure has been realized. The system is reliable
and the application result is good during the two years of trial operation.
The system has realized the retrieval of flash movies on the Internet based on component and
structure. However,the number of indexed flash movies is not large enough and only the basic
component and structure features are used to retrieve flash movies. The future research will focus
on increasing the number of indexed flash movies on the Internet and more features will be used to
retrieve flash movies,such as visual and auditory features,emotional features,artistic features,in
order to increase the generality of the system.