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Mark anti-fake method for compressing video frequency flow

A video stream and logo technology, applied in the field of proving the reliability of video streams, can solve the problems of heavy workload, increased hardware cost, invisible watermark, etc., and achieve the effect of small processing workload and prevention of intentional attacks

Inactive Publication Date: 2008-05-14
苏州扬名信息科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when people develop digital watermarking technology, they focus on the processing of the entire image and the invisibility of the watermark when the image is replayed. This has caused two problems. One is that each frame of image needs to be fully processed , so that the workload of adding and detecting the watermark is huge, and a special device must be used. Each receiving end must be equipped with a dedicated chip or detection device, resulting in an increase in hardware costs; at the same time, the invisible watermark makes it impossible for people to use it intuitively Judgment must be equipped with a special detection device for detection

Method used

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  • Mark anti-fake method for compressing video frequency flow
  • Mark anti-fake method for compressing video frequency flow
  • Mark anti-fake method for compressing video frequency flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment one: referring to shown in accompanying drawing 1, a kind of logo anti-counterfeiting method for compressing video stream utilizes network to realize the real-time embedding and detection (real-time detection and video detection) of anti-counterfeiting logo, and the device it adopts is as shown in accompanying drawing 1 display, including:

[0042]1. Camera 1, used to acquire video images;

[0043] 2. Logo embedding / video compression device 2, wherein, logo embedding can be realized by a program on a dedicated chip, a dedicated computer or a general-purpose computer, which generates a structural key according to the device serial number and the current time, and generates a divergent key from the structural key. chaotic sequence of numbers. According to the serial number of the device and the current time, select a preset image (original logo) in the logo library stored in the machine, and then adjust the RGB color value of each point of the image according ...

Embodiment 2

[0049] Embodiment two: referring to shown in accompanying drawing 2, a kind of method that is used to prevent DVD from being tampered with, anti-counterfeiting logo is dynamically embedded in DVD video, and detects, and its realization device comprises:

[0050] The logo embedding device can be implemented by a program on a dedicated chip, a dedicated computer or a general-purpose computer, which generates a structural key for the current relative time signature according to the private key of the video provider, and a pseudo-random digital sequence is generated by the structural key . The publisher's trademark is used as the original logo, and then the color value of each point of the image is adjusted according to the pseudo-random number sequence to generate the first logo with structure; each number of the pseudo-random number sequence is negated to obtain the second Logo with structure. At the same time, the structural key, the current relative time and the relevant dete...

Embodiment 3

[0052] Embodiment three: see accompanying drawing 3, a simplified logo anti-counterfeiting method for real-time monitoring of the network, using the network to realize real-time embedding and detection of anti-counterfeiting logos, the device it uses is shown in accompanying drawing 3, including:

[0053] 1. Camera 1, used to acquire video images;

[0054] 2. Logo embedding / video compression device 2, wherein the logo embedding can be realized by a program on a dedicated chip, a dedicated computer or a general-purpose computer, which superimposes the logo with structure received from the logo generation and detection device through cryptographic communication onto the original In the video stream, such a video stream is compressed by a dedicated video compression chip or a general-purpose video compression program, and the logo embedding device decompresses the compressed video stream and detects the correlation value, and obtains a correlation value after compression and decom...

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PUM

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Abstract

This invention discloses a logo anti-false method used in compressing video streams characterizing in providing a structured cryptographic key and utilizing a predesigned picture to generate color logo, the color value of each point in it is regulated according to the structured cryptographic key to laminate the said logo to original video signal dynamically, its position or brightness is determined according to the information related to time. The video stream after laminating the logo is compressed to get the video stream via anti-false process to get the video stream via anti-false process to be provided to the play device. The processed video steam is depressed and detected in related values to get relevant thresholds for detection.

Description

technical field [0001] The invention relates to digital video signal processing, in particular to a method for proving the reliability of video streams and realizing anti-counterfeiting. Background technique [0002] With the popularization of computer network and multimedia technology, more and more video signals are transmitted and recorded on the network or through media in the form of compressed digital codes. How to verify the origin of a video signal (including the time and equipment converted into digital signals) ) and reliability (integrity, sequence), etc., become a concern of people. [0003] On the other hand, in the security of residential areas and some important places, a video monitoring network composed of cameras and networks is also used. For this, someone will insert a pre-prepared video into the network by switching network lines or forging IP addresses. How to prevent this from happening is also a problem that people need to solve. [0004] The more c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/167H04N7/18H04L9/00
Inventor 陆健刘跃华
Owner 苏州扬名信息科技发展有限公司
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