A reversible data hiding method based on pixel multi-scale prediction

A multi-scale, pixel technology, applied in the field of information security, which can solve problems such as limited capacity of embedded secret data

Active Publication Date: 2019-06-28
BEIJING JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0004] Although there are many reversible information hiding methods in the prior art, the reversible information hiding method based

Method used

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  • A reversible data hiding method based on pixel multi-scale prediction
  • A reversible data hiding method based on pixel multi-scale prediction
  • A reversible data hiding method based on pixel multi-scale prediction

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Embodiment

[0046] figure 1 It is a flow chart of the reversible data hiding method based on pixel multi-scale prediction in this embodiment, figure 2 It is the implementation schematic diagram of the reversible data hiding method based on pixel multi-scale prediction in this embodiment, refer to figure 1 and figure 2 , the method includes, including:

[0047] S1 calculates the neighborhood complexity of each pixel in the region on the carrier image, and classifies all pixels according to the neighborhood complexity of the pixel.

[0048] When embedding, predict and embedding pixel by pixel from left to right and top to bottom. Then, for the current pixel x, in order to ensure the reversibility of the algorithm and obtain a reasonable neighborhood complexity, the pixels in the lower right direction and the lower left direction should also participate in the complexity calculation, so as to make full use of the surrounding neighborhood information of x . Schematically, image 3 is ...

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Abstract

The invention provides a reversible data hiding method based on pixel multi-scale prediction, and the method comprises the steps: calculating the neighborhood complexity of each pixel on a carrier image in an area, and carrying out the classification of all pixels according to the neighborhood complexity of the pixels; Performing multi-scale prediction on the classified pixel set with a certain range of neighborhood complexity to obtain a prediction value, and further obtaining a prediction error value and a corresponding prediction error histogram; Using the histogram expansion- translation embedding algorithmto expand and translate the pixel values corresponding to the prediction error at the peak of the prediction error histogram,, and embedding the secret data into the prediction errorof the pixel value so as to obtain an image embedded with the secret data; And embedding the auxiliary information into the image embedded with the secret data through an LSB steganography algorithmto obtain an encrypted image containing the secret data. According to the method, under the condition that a certain embedding capacity is ensured, the embedding distortion of the carrier image is effectively reduced by fully utilizing the information redundancy among the pixels.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a reversible data hiding method based on pixel multi-scale prediction. Background technique [0002] With the development of computer and Internet technology, multimedia products can be accessed, exchanged and copied through the Internet anytime and anywhere. It is also easier and easier to tamper with and disseminate the content of multimedia products such as audio, video and images. This kind of benefit also means that there are more and more piracy of stealing original works and dissemination of false information. In order to verify the integrity of multimedia product content and prevent forgery, many technologies such as encryption, fingerprint identification and data hiding have been extensively studied. Among them, data hiding technology is a method that can hide data in multimedia data in an imperceptible manner, so as to achieve the purposes of copyright pr...

Claims

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Application Information

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IPC IPC(8): G06F21/10H04N1/32
Inventor 赵耀李晓龙吴昊锐
Owner BEIJING JIAOTONG UNIV
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