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Video analysis and compression for surveillance applications .

机译:监视应用的视频分析和压缩。

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With technological advances digital video and imaging are becoming more and more relevant. Medical, remote-learning, surveillance, conferencing and home monitoring are just a few applications of these technologies. Along with compression, there is now a need for analysis and extraction of data. During the days of film and early digital cameras the processing and manipulation of data from such cameras was transparent to the end user. This transparency has been decreasing and the industry is moving towards 'smart users'---people who will be enabled to program and manipulate their video and imaging systems. Smart cameras can currently zoom, refocus and adjust lighting by sourcing out current from the camera itself to the headlight. Such cameras are used in the industry for inspection, quality control and even counting objects in jewelry stores and museums, but could eventually allow user defined programmability. However, all this will not happen without interactive software as well as capabilities in the hardware to allow programmability.;In this research, compression, expansion and detail extraction from videos in the surveillance arena are addressed. Here, a video codec is defined that can embed contextual details of a video stream depending on user defined requirements creating a video summary. This codec also carries out motion based segmentation that helps in object detection. Once an object is segmented it is matched against a database using its shape and color information. If the object is not a good match, the user can either add it to the database or consider it an anomaly.;RGB vector angle information is used to generate object descriptors to match objects to a database. This descriptor implicitly incorporates the shape and color information while keeping the size of the database manageable. Color images of objects that are considered 'safe' are taken from various angles and distances (with the same background as that covered by the camera is question) and their RGB vector angle based descriptors constitute the information contained in the database.;This research is a first step towards building a compression and detection system for specific surveillance applications with embedded summarization. While the user has to build and maintain a database, there are no restrictions on the size of the images, zoom and angle requirements, thus, reducing the burden on the end user in creating such a database. This also allows use of different types of cameras and doesn't need a lot of up-front planning on camera location, etc.
机译:随着技术的进步,数字视频和图像变得越来越重要。医疗,远程学习,监视,会议和家庭监视只是这些技术的少数应用。随着压缩,现在需要分析和提取数据。在胶卷和早期数码相机的时代,这种相机的数据处理和操纵对最终用户是透明的。这种透明度一直在下降,并且该行业正朝着“智能用户”方向发展,即能够对其视频和成像系统进行编程和操纵的人们。当前,智能相机可以通过将电流从相机本身输出到前灯来缩放,重新聚焦和调整照明。这种相机在工业中用于检查,质量控制,甚至计数珠宝店和博物馆中的物体,但最终可能允许用户定义可编程性。但是,如果没有交互式软件以及硬件的可编程性,这一切都将不会发生。在本研究中,解决了监视领域中视频的压缩,扩展和细节提取。在此,定义了一种视频编解码器,可以根据创建视频摘要的用户定义要求嵌入视频流的上下文详细信息。该编解码器还执行基于运动的分割,有助于进行对象检测。分割对象后,将使用其形状和颜色信息将其与数据库进行匹配。如果对象不是很好的匹配项,则用户可以将其添加到数据库中,也可以将其视为异常。RGB矢量角度信息用于生成对象描述符以将对象与数据库进行匹配。该描述符隐式地合并形状和颜色信息,同时保持数据库大小可管理。被认为是“安全”的物体的彩色图像是从各种角度和距离(具有与摄像机所覆盖的背景相同的背景)拍摄的,并且它们基于RGB矢量角度的描述符构成了数据库中包含的信息。第一步是为具有嵌入式摘要的特定监视应用程序构建压缩和检测系统。尽管用户必须建立和维护数据库,但是图像大小,缩放和角度要求均不受限制,从而减轻了最终用户创建此类数据库的负担。这也允许使用不同类型的相机,并且不需要很多关于相机位置的预先计划等。

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