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Contrast enhancement RDH method and system based on histogram movement

A histogram and contrast technology, applied in the field of image processing, can solve the problems of insufficient utilization of the histogram library, salt and pepper noise, etc., and achieve the effect of lossless information hiding, resistance to image processing and attacks, and good invisibility

Pending Publication Date: 2021-12-10
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, the utilization rate of the histogram library is not enough
Third, some schemes may introduce salt and pepper noise in the data embedding process

Method used

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  • Contrast enhancement RDH method and system based on histogram movement
  • Contrast enhancement RDH method and system based on histogram movement
  • Contrast enhancement RDH method and system based on histogram movement

Examples

Experimental program
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Embodiment 1

[0048]As shown in FIG. 1, this embodiment provides a method for contrast enhancement RDH based on histogram movement. This embodiment uses this method as an example to illustrate the application to a server. It can be understood that this method can also be applied to a terminal. It can be applied to a terminal, a server and a system, and is realized through the interaction between the terminal and the server. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or it can provide cloud services, cloud database, cloud computing, cloud function, cloud storage, network server, cloud communication, intermediate Cloud servers for basic cloud computing services such as software services, domain name services, security service CDN, and big data and artificial intelligence platforms. The terminal may be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, e...

Embodiment 2

[0082] This embodiment provides a contrast enhanced RDH system based on histogram movement.

[0083] A histogram shift based contrast enhanced RDH system comprising: a baseline embedding module and an extended embedding module;

[0084] The baseline embedding module is configured to: process the grayscale image by merging histogram units to obtain a reserved space; embed the iterated grayscale image side information and additional data into the reserved space to obtain an enhanced image;

[0085] The extended embedding module is configured to: splice the enhanced image with the additional data of the original image extracted by PEH transformation, cover the original image, and obtain the original image after the grayscale image is restored.

[0086] This embodiment proposes a RDH framework with contrast enhancement. The framework consists of two parts, baseline embedding and extended embedding. In the baseline part, histogram vacancies are first preserved by merging histogra...

Embodiment 3

[0089] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps in the RDH method for contrast enhancement based on histogram movement as described in the first embodiment above are implemented.

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Abstract

The invention belongs to the technical field of image processing, and provides a contrast enhancement RDH method and system based on histogram movement. The method comprises a baseline embedding process and an expansion embedding process, the baseline embedding process comprises the following steps of: processing a grayscale image by combining a histogram unit to obtain a reserved space; embedding edge information and additional data of the iterative grayscale image into the reserved space to obtain an enhanced image; and the extension embedding process comprises the following steps: splicing the enhanced image with additional data of the original image extracted by adopting PEH transformation, and covering the original image to obtain the original image after the gray level image is restored.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a contrast enhancement RDH method and system based on histogram movement. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Reversible Data Hiding (RDH) is a technique for reversibly hiding data into digital media. Using RDH technology can accurately extract hidden information and restore the original image losslessly. RDH is useful in digital image marking applications. In cloud storage, the server can embed additional data, such as timestamps, tags, user information, notes, and pictures uploaded by users. Since the messages are appended to the image, the server can achieve better management and save storage overhead. Furthermore, the original content can be restored exactly before the user downloads it. In the past two...

Claims

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Application Information

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IPC IPC(8): G06T1/00G06T5/40G06T5/00
CPCG06T1/005G06T5/40G06T2201/0203G06T5/00
Inventor 王春兴王德艳万文博
Owner SHANDONG NORMAL UNIV
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