Zero-watermark embedding and extracting methods and zero-watermark embedding and extracting devices based on DWT and principal component analysis (PCA) compression

A principal component analysis and extraction method technology, applied in the field of zero watermark embedding method, extraction method and device, can solve the problems of complex detection process, poor robustness, difficult watermark detection and extraction, etc.

Inactive Publication Date: 2016-10-12
HENAN NORMAL UNIV
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[0006] The present invention proposes a zero-watermark embedding and extraction method and device based on DWT and principal component analysis compression to sol

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  • Zero-watermark embedding and extracting methods and zero-watermark embedding and extracting devices based on DWT and principal component analysis (PCA) compression
  • Zero-watermark embedding and extracting methods and zero-watermark embedding and extracting devices based on DWT and principal component analysis (PCA) compression
  • Zero-watermark embedding and extracting methods and zero-watermark embedding and extracting devices based on DWT and principal component analysis (PCA) compression

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Embodiment Construction

[0098] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0099] The methods used in the present invention mainly include: watermark scrambling, discrete wavelet transform (DWT), principal component analysis and compression. The point of the invention lies in the improvement of the Arnold transform, which increases the coefficient β and uses the construction idea of ​​discrete standard mapping to increase f(x 0 ) combination of the two, and use the idea of ​​principal component analysis compression to obtain the feature matrix of the carrier image, and then perform an XOR operation on the carrier feature matrix and the scrambled watermark image to obtain another feature matrix for blind watermarking Extract and use this algorithm to construct a zero watermark, which completely realizes the imperceptibility of the watermark image.

[0100] Embodiment of the zero watermark embedding method b...

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Abstract

The invention relates to zero-watermarking embedding and extracting methods and zero-watermarking embedding and extracting devices based on DWT and PCA compression. When a watermark is embedded, improved Arnold transformation is used to transform an original watermark; a compression image is obtained by using wavelet transformation and PCA compression methods; and XOR operation is carried out on the compression image and a scrambled watermark image to obtain a characteristic matrix. When the watermark is extracted, discrete wavelet transformation is carried out on a carrier image with zero-watermark, the PCA compression method is used to compress a low-frequency sub-band image, XOR operation is carried out on the obtained matrix and the characteristic matrix, the scrambled watermark image is obtained, and a reverse Arnold transformation formula is used to obtain the original watermark image. According to the method and device of the invention, zero watermark is easy to construct and extract, and the safety and anti-attack capability of the watermark are improved effectively.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a zero watermark embedding method, extraction method and device based on DWT and principal component analysis compression. Background technique [0002] As an effective supplement to traditional encryption methods, digital image watermarking uses data embedding methods to hide in digital image products to prove the creator's ownership of his works, and as a basis for identification and prosecution of illegal infringement. At the same time, through the detection of watermark And analysis to ensure the integrity and reliability of digital information, thus becoming an effective means of intellectual property protection and digital multimedia anti-counterfeiting, has aroused people's great attention in recent years, and has become a hot spot in international academic research. At the same time, digital image scrambling and encryption is the basic work of using i...

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Application Information

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IPC IPC(8): G06T1/00
CPCG06T1/0057G06T2201/0051G06T2201/0065
Inventor 孙林徐久成范黎林冯云芝李源王念念郁丽萍刘弱南张霄雨刘琛
Owner HENAN NORMAL UNIV
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