14 December 2021 Perceptual hashing for color images
Xinran Li, Chuan Qin, Heng Yao, Jian Li
Author Affiliations +
Abstract

Currently, the reported image hashing schemes cannot perform satisfactorily in some aspects, such as rotation robustness. To this end, a perceptual color image hashing scheme is proposed. First, the original image is normalized and smoothed by Gaussian low-pass filter. The obtained secondary image is divided into a series of ring-ribbons with different radii and the same number of pixels. Then, textural and color features are extracted in local and global manners. Specifically, local textural features are extracted on luminance values of the ring-ribbons using quadtree decomposition, and global textural features are extracted by gray level co-occurrence matrix. Local color features of significant corner points are extracted on outer boundaries of ring-ribbons through color vector angles, and global color features are extracted by low-order moments. The extracted features are concatenated after quantization and permutation to generate the final hash. Receiver operating characteristic curves verified the effectiveness of our scheme, including robustness, discrimination, and security, which can be effectively applied in content authentication and tampering detection.

© 2021 SPIE and IS&T 1017-9909/2021/$28.00© 2021 SPIE and IS&T
Xinran Li, Chuan Qin, Heng Yao, and Jian Li "Perceptual hashing for color images," Journal of Electronic Imaging 30(6), 063023 (14 December 2021). https://doi.org/10.1117/1.JEI.30.6.063023
Received: 14 July 2021; Accepted: 24 November 2021; Published: 14 December 2021
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CITATIONS
Cited by 4 scholarly publications.
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KEYWORDS
Feature extraction

Digital imaging

Digital filtering

Gaussian filters

Image compression

Visualization

Image filtering

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