摘要
传统视频捕获系统无法解决动态环境下视频区的图像大幅度波动问题,捕获的视频兴趣区误差较高。因此,设计基于Web的动态环境下视频兴趣区的自动捕获系统,该系统中的视频读取模块从Web摄像头获取基带视频并进行解密工作,解密后的基带视频被存储为VGA格式的动态环境视频,随后将其传输到自动捕获模块。自动捕获模块对动态环境视频进行编程控制和实时存储操作,并为用户计算机提供设备接口,以实现用户对动态环境下视频兴趣区的自动捕获。系统后台Web服务端对自动捕获模块获取的视频信息进行自主交互,完成视频信息的存储、处理和系统资源的管理。软件给出了动态环境下视频兴趣区的自动捕获目标函数,以及动态环境视频的读取语言。实验结果表明,所设计的系统拥有捕获误差低的优点。
The traditional video capture system cannot solve the problem of large image fluctuation in the video area in dy namic environment, and its video capture interest area error is high. Therefore, a Web-based automatic capture system in video interest area in the dynamic environment was designed. The video read module in the system obtains baseband video from Web camera and executes the decryption work. The decrypted baseband video is stored as VGA format video of the dynamic environ- ment, which is then transmitted to automatic capture module. The automatic video capture module performs programming control and real-time storage operation of dynamic environment video, and provides the device interface for user＇s computer to realize the user＇s automatic capture in video interest areas in dynamic environment. The autonomous interaction of video information ac- quired by the automatic capture module is conducted in the system backstage Web service end to independently complete the video information storage, processing and management of system resources. The automatic capture objective function in video in- terest areas in dynamic environment and the video read language the dynamic condition are given. The experimental result shows that the designed system has the advantage of low capture error.
出处
《现代电子技术》
北大核心
2017年第8期90-93,96,共5页
Modern Electronics Technique
基金
国家自然科学基金面上项目(72071255)
