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Multimedia digital watermark embedding and separation methods and multimedia digital watermark embedding and separation devices

A watermark embedding and digital watermarking technology, applied in selective content distribution, image communication, electrical components, etc., can solve the problems of high complexity of video watermarking, unsupported watermark separation, failure of copyright protection means, etc., so that it is not easy to intercept or even Tampering, robust effects

Active Publication Date: 2014-01-22
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the complexity of making video watermarks is higher than that of static image watermarks, and due to the continuity between video frames, it is easy to extract digital watermarks based on original data processing by using inter-frame calculation methods, which makes copyright protection methods invalid
Moreover, after the same watermark information is integrated into the original data with different resolutions, some information may be lost through the processes of compression encoding, transmission, and decoding, resulting in weakened copyright effects.
[0006] At present, most digital watermark production software on the market only provide a relatively simple static watermark embedding effect
Even if some software can provide some watermark dynamic effects, it only considers the production process of watermark embedding and does not support watermark separation

Method used

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  • Multimedia digital watermark embedding and separation methods and multimedia digital watermark embedding and separation devices
  • Multimedia digital watermark embedding and separation methods and multimedia digital watermark embedding and separation devices
  • Multimedia digital watermark embedding and separation methods and multimedia digital watermark embedding and separation devices

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Experimental program
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Effect test

Embodiment 1

[0110] Such as figure 1 It is a schematic structural diagram of a multimedia digital watermark processing device in Embodiment 1 of the present invention. Such as figure 1As shown, the configured device is composed of a user interface abstraction 101 , a codec scheme module 102 , a watermark processing engine 103 , an encryption ciphertext module 104 and a file storage module 105 . In this structure, the user interface abstraction 101 is used to interface with the application program and receive the parameters set by the upper layer, that is, the description of the processing requirements of an application program for multimedia digital watermarking. The codec scheme module 102 can receive local multimedia schemes, support video and image codecs, extract data from multimedia files, and write multimedia data into media files of a certain format. The watermark processing engine 103 is the processing center of the method of the present application, and is also the core componen...

Embodiment 2

[0112] Such as figure 2 It is a flow chart of implementing watermark embedding in Embodiment 2 of the present invention. From information import to processing result output, the specific description is as follows:

[0113] The main flow of multimedia digital watermark embedding first enters the preset stage, in which the upper layer application program sets the required parameters to the device of the present application.

[0114] Step 201, importing the requirements of the local codec solution, is to enable the device of the present application to obtain local multimedia processing capabilities to support subsequent codec work.

[0115] Step 202, importing video or image resources, this is the original media file that the user needs to enter the watermark, and at the same time import the watermark picture, the user interface abstraction 101 of the device of the present application provides an interface for receiving the watermark picture form, and how the user chooses or T...

Embodiment 3

[0130] Such as image 3 It is a schematic diagram of the encoding and decoding pipeline in Embodiment 3 of the present invention, and the specific description is as follows:

[0131] Decoding work sequence:

[0132] In step 301, media file data is acquired through local means or remote means.

[0133] Step 302, analyzing the format of the media file, analyzing the container and data stream, demultiplexing before playing, and judging whether the media file can be received and processed by the local multimedia solution.

[0134] Step 303, if the local multimedia solution cannot handle the media format, turn to error handling and notify the upper layer application.

[0135] Step 304, if the local multimedia solution is compatible with the media format, provide extracted image or video frame data.

[0136] In step 305, before the image data or video frame data is output to the watermark processing engine 103, its data array is converted into RGB color mode, which is convenient ...

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Abstract

The invention provides multimedia digital watermark embedding and separation methods and multimedia digital watermark embedding and separation devices. The watermark embedding method comprises the following steps: a presetting stage, a watermark processing stage and a cipher text processing stage, wherein the watermark processing stage comprises steps of calculating watermark fusion information and deciphering the information. According to the scheme, the characteristic of watermark embedding can be set according to the user demand, the robustness is strong, and unique cipher text information capable of analyzing a watermark can be generated for interactive authorization.

Description

technical field [0001] The invention relates to the technical field of digital watermarks, in particular to a method and device for embedding and separating multimedia digital watermarks. Background technique [0002] With the development of multimedia technology and social networks, more and more media files are produced and shared on the Internet, the issue of copyright protection has become more and more concerned, and many technologies have been developed to protect the copyright of digital products. Protection, in which digital watermarking is a more effective way of protection. Multimedia digital watermarking is to embed copyright identification information into the digital carrier, which will neither affect the normal use of the original carrier nor be easily tampered with, so as to achieve the purpose of copyright protection. There are many common examples of multimedia watermarking in digital life. For example, the logo of a TV station in a TV broadcast program is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/8358H04N1/32
Inventor 吴亮郝刚季兵
Owner SAMSUNG ELECTRONICS CHINA R&D CENT