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Single-optical-path surveillance video watermark physical hiding device and digital detection method thereof

A technology of monitoring video and single optical path, which is applied in closed-circuit television system, image data processing, image data processing, etc., and can solve the problems of hidden real-time watermark and so on.

Active Publication Date: 2015-06-24
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to research, the current public video watermark hiding technologies are all based on digital image processing, and many different hiding algorithms have been proposed, but no real-time watermark hiding technology using physical means has been seen.

Method used

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  • Single-optical-path surveillance video watermark physical hiding device and digital detection method thereof
  • Single-optical-path surveillance video watermark physical hiding device and digital detection method thereof
  • Single-optical-path surveillance video watermark physical hiding device and digital detection method thereof

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the protection scope of the present invention.

[0044] Please see attached figure 1 , the present invention is used to monitor video single optical path hidden watermark curing structure new device, including security camera lens 1, CCD detector 2 glued with watermark mask and security camera 3 consists of three parts. Among them, the security camera lens 1 is used to shoot the monitoring site, and its specific parameters have no special requirements. A general-purpose commercial security lens can be used, and the CCD detector 2 glued with a watermark mask is used to hide the watermark and image of the optical image from the security lens. For detection, it is installed on the image plane of the security lens, and there are no special requirements for the specific parameters of the CCD, and a general-pur...

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Abstract

The invention discloses a video surveillance anti-counterfeit watermark real-time shooting hiding device and a detection method. The video surveillance anti-counterfeit watermark real-time shooting hiding device specifically comprises an imaging lens set, an e-index double random phase modulation watermark mask, a monitoring camera CCD and the like. The device comprises two implementation structures; one structure is a curing structure formed in the mode that the watermark mask is glued to the surface of a CCD glass cover plate; the other structure is a replaceable and adjustable structure formed in the mode that the transmission mask is not fixed in a glued mode. Watermark physical hiding is achieved in the mode that the e-index double random phase modulation transmission type watermark mask is used for modulating the strength of an optical image, and the device only comprises an imaging optical path and is very simple. The watermark digital detection method of the device is achieved in the mode that a random phase diagram generating the watermark mask performs demodulation and includes the process of obtaining the logarithm of the image and the process of performing Fourier transformation on pure-phase functions.

Description

technical field [0001] The invention belongs to the technical field of monitoring video anti-counterfeiting watermark hiding and detection, and in particular relates to a single optical path monitoring video watermark physical hiding device and a digital detection method, specifically aiming at the real-time shooting physical hiding device of the monitoring video anti-counterfeiting watermark and the automatic detection of the hidden watermark in the monitoring video. Detect new methods. Background technique [0002] Video surveillance is an important part of the security system. Traditional surveillance systems include front-end cameras, transmission cables, and video surveillance platforms. Cameras can be divided into network digital cameras and analog cameras, which can be used as front-end video image signal collection. It is a comprehensive system with strong preventive ability. Video surveillance is widely used in many occasions because of its intuition, accuracy, t...

Claims

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Application Information

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IPC IPC(8): H04N7/18G06T1/00
Inventor 潘卫清
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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