Research On The Elements' Visual Feature Of Flash Animations

Flash is a designation of using Flash technology creation animation works collectively, as a new visual media, in view of the present network transmission speed problem, Flash adopted vector graphics and streaming media technology, making a Flash animation with documents, easy fabrication, small unique visual effects, flexible interactivity and online transfers faster and other advantages. Since 1999, when it was born in the network world spread parasitically, formed a new art form of expression and communication mode. Flash animation as an interactive multimedia based on vector graphics, except to be embedded form of video, graphics, image, voice, text and other multimedia elements, still can use mask, filter,shape morph deformation formation of flowery profusion, complicated and changeable visual dynamic effect; Using movieclip realize multiple animation nesting and mutual calls, through the actionscript effect on button, movieclip and key frames to implement Flash animation strong interactivity control etc. Currently Flash animation thundered potential quickly develop into digital age the most popular form of multimedia network resources. According to statistics, 99% of the world website are embedded with Flash player (FlashPlayer). It's widely using makes development based on the content Flash animation retrieval system become content-based multimedia information retrieval technology relatively new topic. Therefore, this paper of the components of Flash animation discusses the visual characteristics of Flash animation retrieval based on content, realized the Flash animation elements of visual feature extraction and segmentation, is the scene based on ontology Flash content management and search engine system of research and development of one of the results.This paper released documents from SWF,the format specification, application on object oriented Visual C + + programming development tools, designed the extraction Flash animation elements of the program module contents characteristic, through the appropriate module can extract Flash content characteristic and the characteristics of the corresponding extracted features index write database. Using the tag SWF file information analysis of the components of extracting Flash such as images, shape, video, movie clip, button, mask, extracting its characteristics and semantic, and adding it to the corresponding feature index database based on content, the Flash retrieval system services, effectively improved the retrieval accuracy and efficiency; Using digital image processing techniques and video division technology through analyzing the internal structure and SWF file production process, judge key frames, based on key frame color, line factors such as visual scene features segmentation and logical scene, generated GIF format Flash animation, and extracting the scene in the picture the mass-tone attune complexity, the dynamic effect and scene features, such as number for Flash retrieval system provides browsable returns interface, applied more accurate, vivid, comprehensive Flash resources for teachers and students learning, thus improving the digital learning environment, promoting the digitalization of education resource develop efficiency.