Video double watermarking method based on svd and qr code

Abstract

The invention discloses a video double watermarking method based on SVD and QR codes, comprising the following steps: (1) watermark embedding, including the following in turn: Arnold scrambling; original video preprocessing; grayscale watermark embedding; reconstruction; grayscale QR encoding of watermark text information; QR code embedding; (2) watermark extraction, including the following in turn: use the key key1 to obtain the watermark carrier image; print extraction and Arnold anti-scrambling; key2 selects the image block of the hidden QR code; Decode to obtain verification text information. The double watermark embedded in the present invention has little mutual interference and good robustness against common attacks, and can embed QR code information into image blocks with higher concealment, enhance the security of the video watermark algorithm, and effectively solve the problem of A single robust watermarking algorithm has the problem of single function.

Description

technical field [0001] The invention relates to information hiding technology, in particular to a video double watermark method based on SVD and QR codes. Background technique [0002] Network information technology has been developing rapidly all over the world, which greatly facilitates the communication and exchange between people. With the rapid development of Internet technology and digital multimedia technology, a large amount of multimedia data can be easily accessed, copied and disseminated by people through the network. Therefore, people pay more and more attention to finding an effective method to solve the copyright protection problem of multimedia data. The existing watermarking algorithms are not ideal. For example, based on the space-time multi-resolution characteristics of 3D wavelet transform, the spread-spectrum watermark is adaptively embedded into the 3D wavelet coefficients. The robustness is good, but the real-time performance is poor and The watermark...

AI Technical Summary

Problems solved by technology

However, the disadvantages of this algorithm are: the embedded message is longer than the time spent; it can only process simple stream format files; in order to meet the visibility of the watermark, the embedded watermark intensity is allowed to be low, and it is sensitive to various operations in the airspace; the basic LSB algorithm is resistant to JPEG Weak compression ability; poor robustness, etc.

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