Reversible data hiding method based on prediction error histogram movement

A prediction error and data hiding technology, applied in digital data protection, digital transmission system, and key distribution, can solve the problems of low embedding capacity, image distortion, etc., and achieve the effect of improving embedding capacity, low visual distortion, and multiple embedding positions

Pending Publication Date: 2022-04-26
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a reversible data hiding method based on prediction error histogram movement, which solves the problems of serious image distortion and low embedding capacity in the prior art

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  • Reversible data hiding method based on prediction error histogram movement
  • Reversible data hiding method based on prediction error histogram movement
  • Reversible data hiding method based on prediction error histogram movement

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Embodiment Construction

[0085] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0086] The present invention provides a reversible data hiding method based on prediction error histogram movement, which is specifically implemented according to the following steps:

[0087] Step 1, calculate the prediction error of the current pixel in the original image

[0088] Step 1.1, as in figure 1 As shown, assuming that the size of the original image is W×H pixels, according to the checkerboard pattern, the original image is divided into two sets A and B according to the formula (1);

[0089]

[0090] In formula (1), x i,j is the current pixel of the original image, i is the abscissa of the current pixel of the original image, and j is the ordinate of the current pixel of the original image;

[0091] Step 1.2, for the A set, for the current pixel x i,j , calculate the average value x' of the left and right pixels of the curr...

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Abstract

The invention discloses a reversible data hiding method based on prediction error histogram movement, and the method specifically comprises the steps: 1, dividing an original image into a set A and a set B, and calculating the prediction error of a current pixel in the set A and the set B; step 2, constructing an asymmetric prediction error histogram; 3, taking the data string which randomly generates 0 and 1 as to-be-embedded data W, embedding the W into the set A and the set B, and combining the set A and the set B into which the data W is embedded to obtain an encrypted image; and 4, extracting embedded data from the B set and the A set in the encrypted image obtained in the step 3, and recovering original pixels. According to the method, the problems of serious image distortion and low embedding capacity in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of reversible data hiding, and relates to a reversible data hiding method based on movement of prediction error histograms. Background technique [0002] With the rapid development and popularization of the Internet, there are more and more ways for people to obtain information, and it is more and more convenient to obtain information; as the main information carrier in the digital age, multimedia information such as video, audio, image, and text can only be copied and pasted. It can be disseminated on the network, which greatly improves the ability of multimedia data diffusion. At the same time, it deepens the communication between people in social networking, real-time calling, information sharing, etc., and brings great convenience to people's life. . However, while the Internet brings convenience, there are also hidden dangers of information security. For example, some illegal organizations or individua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60H04L9/08H04L9/40
CPCG06F21/602H04L9/0869H04L63/0442
Inventor 隋连升宋湉
Owner XIAN UNIV OF TECH
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