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Algorithms 2018, 11(1), 6; doi:10.3390/a11010006

A Novel Perceptual Hash Algorithm for Multispectral Image Authentication

1
School of Networks and Tele-Communications Engineering, Jinling Institute of Technology, Nanjing 211169, China
2
State Key Laboratory of Resource and Environment Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China
3
Commonwealth Scientific and Industrial Research Organization (CSIRO), Data61, Sydney, NSW 1710, Australia
*
Author to whom correspondence should be addressed.
Received: 21 December 2017 / Revised: 7 January 2018 / Accepted: 8 January 2018 / Published: 14 January 2018
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Abstract

The perceptual hash algorithm is a technique to authenticate the integrity of images. While a few scholars have worked on mono-spectral image perceptual hashing, there is limited research on multispectral image perceptual hashing. In this paper, we propose a perceptual hash algorithm for the content authentication of a multispectral remote sensing image based on the synthetic characteristics of each band: firstly, the multispectral remote sensing image is preprocessed with band clustering and grid partition; secondly, the edge feature of the band subsets is extracted by band fusion-based edge feature extraction; thirdly, the perceptual feature of the same region of the band subsets is compressed and normalized to generate the perceptual hash value. The authentication procedure is achieved via the normalized Hamming distance between the perceptual hash value of the recomputed perceptual hash value and the original hash value. The experiments indicated that our proposed algorithm is robust compared to content-preserved operations and it efficiently authenticates the integrity of multispectral remote sensing images. View Full-Text
Keywords: multispectral remote sensing image; perceptual hash; integrity authentication; affinity propagation; feature fusion multispectral remote sensing image; perceptual hash; integrity authentication; affinity propagation; feature fusion
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Ding, K.; Chen, S.; Meng, F. A Novel Perceptual Hash Algorithm for Multispectral Image Authentication. Algorithms 2018, 11, 6.

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