采用可逆信息隐藏技术的高性能彩色图像对比度增强算法  

High Performance Color Image Contrast Enhancement Algorithm Using Reversible Data Hiding

作　　者：高光勇 周正源 Gao Guangyong;and Zhou Zhengyuan(Engineering Research Center of Digital Forensics,Ministry of Education,Nanjing University of Information Science&Technology,Nanjing 210044;School of Computer Science,Software,Cyberspace Security,Nanjing University of Information Science&Technology,Nanjing 210044;Zhengzhou Xinda Institute of Advanced Technology,Zhengzhou 450001)

机构地区：[1]南京信息工程大学数字取证教育部工程研究中心,南京210044 [2]南京信息工程大学计算机学院、软件学院、网络空间安全学院,南京210044 [3]郑州信大先进技术研究院,郑州450001

出　　处：《计算机辅助设计与图形学学报》2023年第7期1052-1063,共12页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(6162039);江西省自然科学基金(20192ACBL20031);河南省网络空间态势感知重点实验室开放课题基金(HNTS2022033)。

摘　　要：针对彩色图像可逆信息隐藏中相对较少的嵌入容量和数据嵌入后的图像质量问题,提出基于可逆信息隐藏的高性能彩色图像对比度增强算法.该算法将原始RGB图像转换成HSV(色调,饱和度,亮度)图像,在预处理时,合并像素直方图单侧2个高度最低的条柱,并设置一个失真阈值防止图像失真;数据嵌入过程中,在保持色调分量不变的同时增大单个像素能嵌入秘密信息的长度,且在增大数据嵌入量的同时减少了图像失真;在多次执行数据嵌入过程后,直方图实现均衡化,从而有效地增强图像的对比度.在Kodak和USC-SICI图像集上的实验结果表明,与同类算法(UCE和HSP算法)相比,所提算法在嵌入容量指标和色彩差异指标CIEDE2000的性能上分别平均提升28.6%和34.7%.In order to solve the problem of less embedding quantity and image quality after a large amount of data embedding in reversible data hiding of color image,a high performance color image contrast enhance-ment algorithm based on reversible data hiding is proposed.In this algorithm,the original RGB image is converted into HSV(hue,saturation,value)image,in the preprocessing process,two bins with lowest height on the single side of pixel histogram are merged,and a distortion threshold is set to prevent image distortion.In the data embedding process,the hue component is maintained and the length of the secret information that a single pixel can embed is increased.Meanwhile,the image distortion is decreased.After several rounds of data embedding,the histogram is equalized,effectively enhancing the image contrast.Experimental results and analysis on Kodak and USC-SICI image sets show that compared with similar algorithms(UCE and HSP),the proposed algorithm improves the performance of embedding capacity and CIEDE2000 by 28.6%and 34.7%on average,respectively.

关 键 词：对比度增强 HSV颜色模型 可逆信息隐藏 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]