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Method for processing signal of video stream

A signal processing and video stream technology, applied in the direction of electrical digital data processing, special data processing applications, closed-circuit television systems, etc., can solve the problems of blurred superimposed character strings, inability to extract information, and information loss, etc.

Inactive Publication Date: 2008-06-18
SHENZHEN STREAMING VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a disadvantage in this way: although you can see the video information of the system when playing back the video afterwards, you cannot extract this information, and when the video quality is poor, the superimposed string may be blurred, resulting in information lost

Method used

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  • Method for processing signal of video stream

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Embodiment Construction

[0013] This embodiment takes the vehicle-mounted monitoring system as an example for illustration. The vehicle-mounted monitoring system needs to record the system information collected by the device at that time in the video. For example, these system information include: the name of the video recording area, alarm, GPS information (position, speed, etc.) , vehicle alarm status, XYZ three-direction acceleration, temperature, etc.

[0014] Generally speaking, the recording method of these system information is: superimpose the character string representing these information into the image through hardware, make it a part of the image, and then compress and encode the image.

[0015] The result of this approach is:

[0016] Only when the image is played back can the system information at that time be obtained;

[0017] This information cannot be automatically extracted by computer;

[0018] When the video quality is poor, the superimposed string may be blurred, resulting in l...

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Abstract

The invention discloses a processing method of signal of video flow. The video flow is added with system information and synchronous transmission of a video frame; a database is established and forms and indexes with corresponding data items are established according to the contained data items in the system information. The system information and synchronous information extracted from the video flow are stored in the forms and the indexes and at the same time index documents are established for video key frames and the index documents and the video flow are stored in the database together. The invention is used for a monitoring system and can search and use the system information data added in the video flow conveniently.

Description

Technical field [0001] The invention relates to a signal processing method of a video stream, in particular to a signal processing method for a video stream with additional system information and video frame synchronous transmission information used in a monitoring system. Background technique [0002] When performing surveillance video in the surveillance system, the status and information of the system at that time need to be superimposed on the image, so that the information can be obtained when the video is played back. This is an essential function of surveillance products. The current common practice is to directly superimpose system information on the screen and record it. There is a disadvantage in this way: although you can see the video information of the system when playing back the video afterwards, you cannot extract this information, and when the video quality is poor, the superimposed string may be blurred, resulting in information lost. Therefore, it is a g...

Claims

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Application Information

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IPC IPC(8): G06F17/30H04N7/18
Inventor 孙继业
Owner SHENZHEN STREAMING VIDEO TECH