摘要
针对传统的视频表现方式受时间顺序的影响,不利于用户快速查阅和筛选视频内容信息的问题,在分析视频数据特点的基础上,提出了视频数据可视化的设计原则,并根据该原则以及对视频关键帧的聚类分析,提出一种螺旋圈结构的视频内容可视化方法.该方法采用基于图像主色彩的视频结构化完成镜头分割和关键帧提取,将结构化的视频内容可视化为圈心、内层聚类圈、中层表现圈和外层散射圈4个层次,圈心部分主要展示视频的名称、分辨率、帧率等基本信息,内层聚类圈用于绘制聚类后的关键帧序列,中层表现圈用于绘制每个镜头提取的代表帧序列,外层散射圈用于绘制每个代表帧对应的镜头内容细节;并根据该方法设计开发了视频可视化分析系统(VVAS).实验结果表明,文中方法能够清晰、直观地呈现视频内容和整体结构,帮助用户快速理解视频内容.
Due to the limitation of video chronological expression, it is difficult for user to look through and retrieve video information. Based on the analysis of the video data characteristics, some design principles for video data visualization are proposed in this paper. According to the proposed design principles and video key frames obtained by clustering algorithm, a novel spiral circle structure video visualization method is given. Firstly, video shot segmentation and key-frame extraction based on frame dominant color are completed. Then, the video content is visualized into four layers, including spiral circle center, inner layer of clustering circle, middle layer of displaying circle and outer layer of diffusing circle. The spiral circle center displays basic video information, such as video name, resolution and frame rate. Representative key-frames are drawn on clustering circle in inner layer. The middle layer of displaying circle is used to shown representative sequences that are picked up from every video shot. Corresponding details of every video shot are described on the diffusion circle in outer layer. Finally, a video visualization and analysis system （VVAS） is designed and developed according to proposed visualization method. Experimental results show that the proposed method can figure out the video content and the whole structure clearly and directly. It is very helpful for users to understand the video content quickly.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2014年第7期1041-1050,共10页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(61303127)
国防预研项目(B3120110005
10ZG6102)
四川省科技厅项目(2011JQ0041
11ZS2009)
四川省教育厅重点项目(11ZA130
13ZA0169)
绵阳市网络融合项目(12zxwk05)
关键词
视频可视化
镜头分割
关键帧提取
螺旋圈结构
video visualization
shot segmentation
key-frame extraction
spiral circle structure
