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An audio and video matching zero watermark generation method and an audio and video anti-tampering detection method
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An audio and video, zero watermark technology, applied in the field of audio and video matching zero watermark generation, can solve the problems of video quality degradation, audio and video cross watermarking scheme cannot be detected, no consideration of audio and video matching, etc.
Active Publication Date: 2022-02-22
SHANDONG UNIV OF SCI & TECH
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[0012] ① Changes are made to the video content, that is, the pixel value. If the algorithm is not properly selected, the video quality will be reduced, so the relationship between robustness and invisibility needs to be measured;
[0013] ② Due to the video image's requirement for the invisibility of the watermark, there are also restrictions on the amount and strength of embedded data
[0017] Although the above audio and video cross watermarking scheme involves audio and video, this scheme does not consider whether the audio and video match, that is, if the audio or video is maliciously replaced, the audio and video cross watermarking scheme cannot detect
[0018] In addition, since the audio and video cross-watermarking scheme also adopts the actual embedding method, its disadvantages are the same as those of the above-mentioned scheme 1.
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Embodiment 1
[0086] Such as figure 1 As shown, the first embodiment and a sound video matching zero water printing method comprising the steps of:
[0087] a. Decoding the audio and video stream, segmentation in units of time T1, resulting in segmented audio and video segments {i (i), x (i)}, i = 1 ... n, such as figure 2 Indicated.
[0088] Wherein I (I) and X (I) are decoded Ethios, respectively, respectively, respectively, respectively, and audio segments corresponding to the video segment.
[0089] It is assumed that T1 is 1s, that is, segmentation in units of 1s.
[0090] Among them, the audio segment x (i) corresponding to each video segment in the audio and video segment is processed in step B; at the same time, for each video segment I (i) in the audio and video segment, according to the following steps C is processed.
[0091] B. such as Figure 4 As shown, the encrypted sound watermark is generated, the specific process is as follows:
[0092] Tap the audio of one channel, that is, mo...
Embodiment 2
[0164] Such as Image 6 As shown, the present embodiment 2 discloses an audio and video anti-tamper detection method.
[0165] I. The audio and video stream to be verified is decoded, and the segmentation in units of time T1 will be segmented to obtain the audio and video segment to be verified; where the audio and video segment to be verified contains the corresponding audio to be verified. part.
[0166] Here, T1 is, for example, 1s, i.e., in units of 1s.
[0167] II. Extract the keyframe image to be verified according to the saved frame number, and obtain the video feature matrix to be verified based on the keyframe image. The specific process of this step II is as follows:
[0168] (1) Extract the keyframe image of the corresponding video segment according to the saved key K1.
[0169] (2) Require the new Zernike moment A 'of a critical frame image, and calculate the keyframe rotation angle α according to the previously saved Zernike Moment A, and rotate the keyframe. The calcu...
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Abstract
The invention discloses an audio and video matching zero watermark generation method and an audio and video anti-tampering detection method. Wherein, when generating the zero watermark, the method of the present invention performs segmentation matching on the audio and video in units of time, and the generated zero watermark not only carries the video feature but also the sound feature of the corresponding audio; the video feature is the key frame of each video segment The feature matrix constructed after image processing; when the sound feature is generated, the influence of the silent segment is fully considered, and different sound watermarks are generated for the voiced segment and the silent segment; XOR operation is performed on the video feature and the sound watermark, and the audio and video match zero watermark , and send it to a third-party copyright certification agency for registration and preservation. The zero watermark generated by the method of the invention can be used for anti-tampering detection of audio and video and self-copyright verification, and realizes the matching proof of video and its corresponding audio. When any party of the audio and video to be verified is tampered with, the zero watermark generated by the method of the invention can effectively prove that it has been tampered with.
Description
Technical field [0001] The present invention relates to a sound video matching zero water printing method, and a audio and video anti-tamper detection method. Background technique [0002] Due to the development of electronic technology, the Internet, multimedia technology, a wide variety of multimedia files are widely spread (such as audio, video, etc.), each can share with Internet and download other people's audio and video. [0003] However, with the wide application of various audio and video editingsoftware, there are various editing for some purposes, such as replacing the audio corresponding to the video, replace the video screen, cutting Wait. [0004] The editable audio and video spreads through the Internet, which is easy to play a certain misleading. [0005] If the tampering of the audio and video is just for entertainment, it will not cause any effect; if the tamper of the audio and video is not good, for example, the public opinion is guided, and the malicious dis...
Claims
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