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Reversible data hiding method based on eight neighborhood pixels

An information hiding and eight-neighborhood technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as large distortion

Inactive Publication Date: 2016-11-09
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

However, the histogram concentration obtained by the existing information hiding method based on the prediction error histogram shift needs to be improved; and because of its embedded adaptive search, the distortion caused by embedding secret information is relatively large

Method used

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  • Reversible data hiding method based on eight neighborhood pixels
  • Reversible data hiding method based on eight neighborhood pixels
  • Reversible data hiding method based on eight neighborhood pixels

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Embodiment Construction

[0051] The present invention is described in further detail below in conjunction with accompanying drawing:

[0052] The present invention illustrates the method of the present invention by embedding secret information on a typical 512*512 image. figure 2 is an eight-bit grayscale image, image 3 It is a template for single embedding, and the image contains the relationship between the current pixel to be embedded and its eight neighboring pixels (ie, left, right, upper, lower, upper left, lower left, upper right, and lower right adjacent pixels) ( image 3 (a)) and four sets of prediction modes for the current pixel ( image 3 (b)).

[0053] see figure 1 As shown, a kind of reversible information hiding method based on eight neighborhood pixels (i.e. left, right, upper, lower, upper left, lower left, upper right, lower right neighborhood pixels) of the present invention comprises the following steps:

[0054] Step 1: Obtain an eight-bit grayscale image with a size of 512...

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Abstract

The invention discloses a reversible data hiding method based on eight neighborhood pixels. According to the method, a gray image of a space domain is predicted using eight neighborhood pixels of a pixel to be embedded and a prediction difference is calculated, and then, secret data is embedded based on the difference and a histogram removal algorithm. The method specifically comprises the steps as follows: first, the smoothness of a current block is predicted based on the characteristics of eight neighborhood pixels of a pixel to be embedded to get the characteristics of smoothness; then, the pixel to be embedded is predicted to get a difference, and different secret data embedding modes are adopted according to the smoothness in the hope of reducing distortion caused by secret data embedding; and finally, an embedding template is used to embed all pixels in the scope of the template in sequence to achieve high embedding capacity. Because of the characteristics of natural gray images, that embedded images have low distortion is ensured while a lot of secret data is embedded, and the security of data hiding is improved.

Description

【Technical field】 [0001] The invention belongs to the field of reversible information hiding based on space domain, in particular to a reversible information hiding method based on eight neighborhood pixels (that is, left, right, upper, lower, upper left, lower left, upper right, and lower right neighborhood pixels). 【Background technique】 [0002] At present, with the rapid development of computer, communication and information processing technologies and the widespread use of cloud computing and big data technology, multimedia information such as images, audio, and video can be quickly and quickly transmitted in various communication networks, giving information Applications such as compression, storage, replication and processing provide great convenience. At present, the network has become the main means of communication, and various confidential information, including national security information, military information, private information (such as credit card account n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0092G06T2201/0051
Inventor 潘志斌王凌飞朱若馨
Owner XI AN JIAOTONG UNIV
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