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Digital video watermarking method based on one-dimensional wavelet transform

A wavelet transform, digital video technology, applied in the direction of pulse modulation TV signal transmission, analog security/charging system, etc., to achieve real-time embedding and extraction, reduce complexity, and enhance security effects

Inactive Publication Date: 2010-05-12
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The algorithm can be embedded into the video sequence in real time, but the robustness of the algorithm needs to be further improved

Method used

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  • Digital video watermarking method based on one-dimensional wavelet transform
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  • Digital video watermarking method based on one-dimensional wavelet transform

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Embodiment

[0038] Examples of the present invention figure 1 As shown, a digital video watermarking method based on one-dimensional wavelet transform, the steps are as follows:

[0039] 1. Watermark image preprocessing, using scrambling transformation technology to scramble the spatial position of pixels, so that the video loaded with watermark has anti-shearing ability, and enhances the confidentiality of the watermark algorithm;

[0040] 2. One-dimensional wavelet transform, in the original video sequence, take two consecutive frames and perform one-dimensional wavelet transform;

[0041] 3. Embedding the watermark, embedding the watermark into each block of the low-frequency frame obtained in step 1, and realizing the real-time embedding of the watermark;

[0042] 4. To detect the watermark, take two consecutive frames from the watermark to be detected and perform inter-frame one-dimensional wavelet transformation, and divide the obtained low-frequency frame into blocks, and extract ...

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Abstract

The invention relates to a digital video watermarking method based on one-dimensional wavelet transform, belonging to the technical fields of video signal processing and multimedia signal processing, and comprising the steps: 1) watermarked image preprocessing, adopting a scrambling conversion technique to disarrange the space positions of pixels, leading videos loaded with watermark to have shearing capability, and strengthening the security of a watermarking algorithm; 2) one-dimensional wavelet transform, taking two continuous frames from an original video sequence to carry out one-dimensional wavelet transform; 3) embedding watermark, embedding watermark into each branch block with low frequency frame obtained in the step (1), and realizing the real-time embedding of the watermark; and 4) detecting watermark, taking two continuous frames from the watermark to be detected to carry out one-dimensional wavelet transform, carrying out block dividing operation to the obtained low frequency frames, and conducting watermark extraction according to an embedded algorithm. In the invention, the complexity of embedding and extracting watermarks is greatly reduced, and the embedding and the extraction of the watermarks can be carried out in real time, the efficiency is improved, and simultaneously the attack to the frame rearrangement has obvious robustness.

Description

(1) Technical field [0001] The invention designs a digital video watermarking method based on one-dimensional wavelet transform, and belongs to the technical fields of video signal processing and multimedia signal processing. (2) Background technology [0002] With the rapid development and wide application of multimedia technology and network technology, images, audio, video and other multimedia works can be obtained in digital form, and it becomes very easy to make perfect copies, which brings great benefits to people's work, study and life. Life brings many conveniences. But at the same time, it may also lead to large-scale unauthorized copying, which is likely to damage the healthy development of publishing industries such as music, movies, books and software. In this context, digital watermarking technology, as an important means of information protection, is widely used in copyright protection of digital products, release tracking, and identity authentication and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/24H04N7/16
Inventor 季伟田虎
Owner SHANDONG UNIV
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