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A Reversible Information Hiding Method Based on Block Adaptive Histogram Shift

A technology of histogram translation and information hiding, which is applied in image enhancement, image analysis, image data processing and other directions to achieve good hiding effect, improve image quality, and embed information security.

Inactive Publication Date: 2018-04-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most data hiding algorithms will irreversibly distort the image, but in some practical applications, image changes caused by embedded information are unacceptable

Method used

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  • A Reversible Information Hiding Method Based on Block Adaptive Histogram Shift
  • A Reversible Information Hiding Method Based on Block Adaptive Histogram Shift
  • A Reversible Information Hiding Method Based on Block Adaptive Histogram Shift

Examples

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Embodiment Construction

[0026] The drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0027] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] like figure 1 , is a flowchart of a reversible information hiding method based on block adaptive histogram translation in the method of the present invention, and its specific steps are as follows:

[0029] (1) Blocking and adaptive selection of the carrier image to embed blocks, specifically:

[0030] (11) Divide the carrier image into M sub-blocks of N*N size, and scramble it;

[0031] (12) The scramb...

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Abstract

The invention relates to the field of multimedia information security, and specifically relates to a reversible information hiding method based on block adaptive histogram translation, which includes the following steps: (1) Divide the carrier image into blocks and calculate the peak value of the histogram of each sub-block; (2) ) Based on the embedding capacity of each sub-block, adaptively select the sub-block used to embed information; (3) When embedding information, use a method of adaptively selecting the histogram translation direction. The present invention is a new histogram translation method that can embed information efficiently, extract the embedded information losslessly, and restore the original image. It adopts the blocking method to make the embedded information safer, improves the overall embedding rate, and adaptively selects the histogram. The image translation direction can effectively increase the peak signal-to-noise ratio of the image and further improve the image quality. This can provide help for medical, military and other applications. The method of the present invention has a better reversible information hiding effect for images with higher accuracy.

Description

technical field [0001] The invention relates to the field of multimedia information security, in particular to a reversible information hiding method based on block adaptive histogram translation. Background technique [0002] Image data hiding is to hide useful information in public images for transmission and dissemination. Most data hiding algorithms will cause irreversible distortion to the image, but in some practical applications, the image change caused by embedded information is unacceptable. For example, in military, medical and other fields, not only the embedded information is of great significance, but the original carrier image is also indispensable. The purpose of reversible information hiding technology is that users can not only extract the embedded information completely, but also restore the original image without loss. Not only in the military and medical fields, reversible information hiding technology has a broad development space, but also in the judi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/40G06T5/00
CPCG06T5/40G06T2207/20012G06T5/77
Inventor 黄丹黄方军
Owner SUN YAT SEN UNIV
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