Exception event detection and double-stream coding-based video monitoring method
A technology for abnormal events and video monitoring, applied in the direction of digital video signal modification, television, electrical components, etc., can solve the problems of wireless channel instability, no consideration of after-the-fact investigation and evidence collection, high bit error rate, etc., to solve the problem of storage medium saturation and The effect of network disconnection, saving transmission bandwidth and storage space, and complete monitoring information
Inactive Publication Date: 2010-07-14
SHANGHAI JIAO TONG UNIV
View PDF1 Cites 26 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the time-varying and unstable wireless channel, limited bandwidth, and high bit error rate, how to ensure the real-time and high-quality requirements of surveillance video at the same time has become a difficulty affecting the application of wireless video surveillance systems.
[0003] After searching the existing literature, it is found that Chinese patent application number: 200910014707, name: Adaptive flow control method for data transmission of wireless video surveillance system, this technology improves the quality of video transmission through flow control; Chinese patent application number : 200910014849.3, name: frame rate control method based on wireless video surveillance, this technology adopts frame rate control method to improve the quality of video transmission, but the above two technologies do not consider the security monitoring system for real-time browsing of surveillance video and post-event investigation and evidence
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Example Embodiment
[0030] Example
[0031] like figure 1 As shown, the specific steps of this embodiment are as follows:
[0032] Step 1, initialize the system operating environment, complete the system network configuration, and regularly detect the local storage medium (SD card in this embodiment) and network connection status.
[0033] The described network configuration is completed by rewriting the boot self-starting file ( / etc / rc.d / rc.local) under the embedded Linux system, that is, adding network configuration commands in the file.
[0034] Described regular detection SD card and network connection state utilize the cron server in the linux system to complete, and cron server executes the task according to the time of configuration file setting, and cron service is set to start automatically when starting up, after cron service starts, The server reads all configuration files (global configuration file / etc / crontab, and per-user crontab configuration files).
[0035] In this embodiment...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention discloses an exception event detection and double-stream coding-based video monitoring method in the technical field of video monitoring. The method comprises the following steps: initializing operation environment of a system, completing network configuration of the system, and regularly detecting a storage medium and a network connecting state; acquiring video information of a current monitored area, and respectively performing exception detection and double-stream coding processing on preprocessed video data; according to the acquired exception detection result and coding result, starting up alarm linkage, selectively remotely transmitting low-quality bit streams subjected to the first kind of coding in the double-stream coding image information, and performing ring buffer-based exception event storage on high-quality bit streams subjected to the second kind of coding; decoding, displaying and storing the acquired image information subjected to the first kind of coding at a receiving end; and locally storing the acquired image information subjected to the second kind of coding. The method can realize real-time browsing of the video and high-quality historical image check, and has the advantages of low cost, simpleness and reliability, and complete monitoring information.
Description
technical field [0001] The invention relates to a method in the technical field of video monitoring, in particular to a video monitoring method based on abnormal event detection and dual-stream encoding. Background technique [0002] In recent years, with the development of computer technology, especially the improvement of computing speed, storage capacity, communication ability and image display, as well as the increasing maturity of video compression coding technology, video surveillance technology has achieved rapid development. With the popularization of various digital monitoring systems, various changes have occurred in their working methods, and monitoring systems for different occasions have appeared, such as: network video monitoring systems, wireless video monitoring systems and intelligent video monitoring systems. Among them, wireless video surveillance uses wireless information transmission without the need for wired network construction such as optical fibers ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more IPC IPC(8): H04N7/18H04N7/26H04L29/08H04N19/154
Inventor 张重阳江城杨华
Owner SHANGHAI JIAO TONG UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap