Film and television watermark embedding method and device and film and television watermark extracting and recognizing method and device
A technology of watermark embedding and watermark extraction, applied in digital video signal modification, selective content distribution, electrical components, etc., can solve the problem of inability to avoid geometric synchronization and time domain synchronization of affine transformation and projection transformation at the same time, low detection efficiency, detection big error
Inactive Publication Date: 2019-07-30
ZHEJIANG UNIVERSITY OF MEDIA AND COMMUNICATIONS
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of this application is to provide a video watermark embedding, video watermark extraction and recognition method and device for the deficiencies in the above-mentioned prior art, so as to solve the geometric synchronization of affine transformation and projective transformation that cannot be avoided at the same time in the prior art Synchronized with the time domain, resulting in low detection efficiency and large detection errors
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
Embodiment Construction
[0051] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them.
[0052] The present application provides a video watermark embedding method, which avoids the problem that the geometric synchronization and time domain synchronization of affine transformation and projective transformation cannot be avoided at the same time, resulting in low detection efficiency and large detection errors at the same time. The execution subject of this method may be various terminal devices, such as mobile phone, tablet computer, wearable device, etc., and this application does not make any limitation here.
[0053] figure 1 A schema...
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 provides a film and television watermark embedding method and device and a film and television watermark extracting and recognizing method and device, and relates to the field of film and television watermarks. The method comprises: acquiring information to be hidden, and converting the information to be hidden into a character string text through preprocessing; obtaining a characterstring text, and converting the character string text into a character watermark image through imagination; and embedding the character watermark image into the local area of the target frame to obtain an embedded frame image. Compared with the prior art, bit-by-bit embedding is avoided, integral embedding is achieved in a picture mode, and the problems that the later detection efficiency is lowand meanwhile the detection error is large due to the fact that geometric synchronization and time domain synchronization of affine transformation and projection transformation cannot be avoided at the same time are solved.
Description
technical field [0001] This application relates to the field of film and television watermarking, and specifically relates to a method and device for embedding a film and television watermark, extracting and identifying a film and television watermark. Background technique [0002] The high-definition camera recording of theater movies (commonly known as "remake" or "gun version" movies), as well as the screen recording and remake of online on-demand movies have become the main ways of embezzling film and television works, seriously affecting the healthy development of the film and television industry. In order to control the problem of film and television piracy, countries have taken positive actions in adjusting copyright rules, improving the copyright law enforcement environment of sovereignty, and increasing the intensity of combating piracy, and achieved certain results. [0003] As the intellectual property protection of digital products, digital watermarking technolog...
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 Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467H04N21/8358
CPCH04N19/467H04N21/8358
Inventor 付剑晶
Owner ZHEJIANG UNIVERSITY OF MEDIA AND COMMUNICATIONS