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Video monitoring system

A video monitoring system and image compression technology, applied in the field of image processing, can solve the problem of not being able to identify whether the image has been modified, and achieve the effect of easy image recognition, high definition, and tamper-proofing

Inactive Publication Date: 2009-05-13
重庆神州龙芯科技有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0004] In view of this, the present invention is to provide a video surveillance system to solve the above-mentioned problem of not being able to identify whether the image has been modified

Method used

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Embodiment Construction

[0039] In order to clearly illustrate the technical solutions of the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.

[0040] like figure 1 As shown in , the present invention includes a CPU for realizing data calculation, an image compression unit for compressing the preprocessed image, an encryption unit for encrypting, an image preprocessing unit for preprocessing the image of the camera, and a cache for the image Image cache unit, system memory, storage medium, monitoring display control module for controlling the display to display image data, Ethernet interface module and / or USB interface module for data transmission.

[0041] The flow process of data processing of image by image compression unit and encryption unit in the present invention is as follows: figure 2 As shown in , the process of image compression and encryption in the present invention includes two parallel process...

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Abstract

The invention discloses a video monitoring system that includes: an image preprocessing unit that is used for converting image data come from a camera into a binary code stream; an image compression unit that processes compression encoding to the binary code stream with RGB format; an encryption unit that is used for encrypting image data in compression encoding process; a center processor that is used for scheduling controlling whole system. The compression process used by the image compression unit is JPEG or JPEG-2000 standard. The image of system encrypting prevents the image from being tampering, generates image that can be identified after being tampered, has uniqueness, can regard the image data generated directly as only accuracy proof and is used for various security protection system; inter-frame information in the compression process is not be compressed which ensures high definition of image and is convenient for identifying later image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a video monitoring system. Background technique [0002] Existing video surveillance systems mostly use MPEG and H.264 compression algorithms to achieve video compression. The above algorithm mainly achieves a high compression ratio through inter-frame compression. Therefore, when the compressed image is extracted from an independent video frame, the image information loss is large, and it cannot be applied to security, forensics, medical imaging, etc. Highly demanding applications. [0003] With the development of image processing technology and the advent of more and more image processing software, the reliability and authenticity of image forensics are getting lower and lower. After the existing image is processed by image processing software, it can be easily forged, and it is impossible to identify whether it has been modified, which greatly reduces the reliabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/16H04N11/02H04N7/18H04N19/467
Inventor 罗著高键周绪林杜治芸
Owner 重庆神州龙芯科技有限公司
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