结合感知哈希与数字水印的遥感影像认证方法

王玉海; 朱长青; 苏守宝; 丁凯孟

doi:10.3788/OPE.20162413.0640

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结合感知哈希与数字水印的遥感影像认证方法

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- 结合感知哈希与数字水印的遥感影像认证方法
- An authentication method based on perceptual hashing and watermarking for remote sensing image
- 光学精密工程 2016年24卷第10s期页码：640-648
- 作者机构：
  
  1. 南京师范大学虚拟地理环境教育部重点实验室,江苏南京,210023
  2. 金陵科技学院,江苏南京,211169
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目（NO.61375121）();金陵科技学院博士科研启动基金资助项目（NO.jit-b-201520）();科研基金孵化项目（No.jit-fh
- DOI：10.3788/OPE.20162413.0640
  中图分类号： TP391.4
- 收稿日期：2016-05-16，
  
  修回日期：2016-06-03，
  
  纸质出版日期：2016-11-14
- 稿件说明：
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王玉海, 朱长青, 苏守宝等. 结合感知哈希与数字水印的遥感影像认证方法[J]. 光学精密工程, 2016,24(10s): 640-648

WANG Yu-hai, ZHU Chang-qing, SU Shou-bao etc. An authentication method based on perceptual hashing and watermarking for remote sensing image[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 640-648
王玉海, 朱长青, 苏守宝等. 结合感知哈希与数字水印的遥感影像认证方法[J]. 光学精密工程, 2016,24(10s): 640-648 DOI： 10.3788/OPE.20162413.0640.

WANG Yu-hai, ZHU Chang-qing, SU Shou-bao etc. An authentication method based on perceptual hashing and watermarking for remote sensing image[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 640-648 DOI： 10.3788/OPE.20162413.0640.

摘要

针对遥感影像的完整性认证需求，结合感知哈希与数字水印各自的特点，提出一种基于感知哈希与数字水印的遥感影像认证方法。该方法的关键在于克服感知哈希与数字水印之间的相互影响：首先对影像进行格网划分；然后通过离散小波变换（DWT）提取影像格网单元的水平和垂直中频系数，经过主成分分析（PCA）处理后生成感知哈希序列；接下来，基于“交错”策略，将感知哈希序列嵌入影像。在影像的认证端提取嵌入影像的感知哈希序列，并将其与重建值进行对比，进而实现影像的完整性认证。该方法将感知哈希与数字水印有机结合，克服了感知哈希进行遥感影像认证的过程需要额外传输认证信息的不足。结果表明，篡改测试实例的归一化Hamming距离为0.218 7~0.398 4，能够有效识别恶意篡改，且嵌入哈希序列的格网单元的平均PSNR约为38~39，不影响遥感影像的可用性。

Abstract

Aiming at the requirements of complete authentication of remote sensing image in application

an authentication method based on perceptual hashing and watermarking for remote sensing image is proposed. The key of the method is to overcome the mutual influence between perceptual hashing and watermarking. Firstly

the remote sensing image is partitioned into girds which are then preprocessed; secondly

horizontal and vertical middle frequency coefficients are extracted by DWT(Discrete Wavelet Transtorm) and treated by PCA(Principal Component Analysis) to generate perceptual hash value

which is embedded into the diagonal middle frequency coefficient based on interleaving strategy. The authentication process is implemented via the comparison between the extracted perceptual hash value and the reconstructed one. As the method organically combined perceptual hashing and watermarking

it overcomes the defect that the perceptual hashing based authentication needs extra channel to transmit hash values. The experiments demonstrate that the Hamming distance of the tampering tests is between 0.218 7 and 0.398 4

thus the detailed tampering of the image can be effectively detected

and the average PSNR of the grids with perceptual hash value embedded is about 38 to 39

which means the availability of the image is not affected.

关键词

Keywords

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