System for processing digital watermarking, method and apparatus for embedding and detecting digital watermarking
A technology of digital watermarking and watermark embedding, which is applied in the field of information hiding and can solve the problems of multimedia frame change, tampering, and tampering detection of the relationship between frames.
Active Publication Date: 2012-04-25
HUAWEI TECH CO LTD
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[0008] To sum up, in the prior art, the selection of the watermark embedding position of the multimedia content is carried out based on information that has nothing to do with the multimedia content. The inter-frame relationship between the watermark information embedded by the existing method and the multimedia content composed of multiple frames Irrelevant, after the watermark is embedded, the tampering that destroys the inter-frame relationship of the multimedia content cannot change the watermark information of the multimedia frame, so the tampering of the inter-frame relationship cannot be detected based on the detection of the watermark
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[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0052] The embodiment of the present invention mainly determines the auxiliary information for watermark embedding according to the frame number and security information in the multimedia content, and takes the auxiliary information as a determining factor when embedding the watermark. Therefore, the watermark information embedded in each frame of the multimedia content is associated with the frame number of the frame. When inter-frame tampering of the multimedia content occurs, such as when the frame is exchanged or deleted, the embedded watermark information will change, so that it can be based on For watermark detection, tampering of the relationship between frames is detected.
[0053] figure 1 It is a structural diagram of a digital watermark proce...
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The invention discloses a digital watermarking processing system, a method and a device for embedding and detecting digital watermarking. Based on the frame number information of the raw multimedia frame, first adjuvant information is defined; and based on the first adjuvant information, digital watermarking information is embedded into the raw multimedia frame, so as to obtain a multimedia frameof the digital watermarking. Based on the frame number information of the raw multimedia frame, a second adjuvant information is defined; based on the second adjuvant information, a detection is performed on the digital watermarking information embedded into the multimedia frame of the watermarking system, thereby realizing the correlation between the digital watermarking information embedded into the raw multimedia frame and the frame number; if the correlation between frames of the multimedia content is falsified, the watermarking information embedded into the raw multimedia frame changes, so that the falsification of the correlation between frames can be detected during the detection.
Description
technical field [0001] The invention relates to the technical field of information hiding, in particular to a digital watermark processing system, a digital watermark embedding and detection method and device. Background technique [0002] At present, with the rapid development and wide application of multimedia technology, the digital communication of media has become possible. Digital multimedia content such as images, audio, and video has gradually become a part of our lives due to its strong portability, high efficiency, quickness, and accuracy. With the popularization of digital multimedia content, many powerful multimedia modification tools have also appeared. The appearance of these tools and the popularization of the Internet have made piracy and modification of multimedia content easy. [0003] Traditional conditional access systems can authenticate users of multimedia content in the system, but once users connect to the system, the multimedia content in the system...
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IPC IPC(8): H04N21/8358H04N5/913
CPCH04N1/32144G06T1/0085
Inventor 张永平郝韬
Owner HUAWEI TECH CO LTD