Image ProcessingNo Access

Discrimination of Computer Generated and Photographic Images Based on CQWT Quaternion Markov Features

Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science and Technology, Jiangsu, P. R. China

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Ting Li

Jiangsu Engineering Center of Network Monitoring, Nanjing University of Information Science and Technology, Jiangsu, P. R. China

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Frank Y. Shih

Department of Computer Science, New Jersey Institute of Technology, Newark, NJ, USA

Department of Computer Science and Information Engineering, Asia University, Taichung, Taiwan

E-mail Address: shih@njit.edu

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https://doi.org/10.1142/S0218001419540077Cited by:1 (Source: Crossref)

Abstract

In this paper, an effective method based on the color quaternion wavelet transform (CQWT) for image forensics is proposed. Compared to discrete wavelet transform (DWT), the CQWT provides more information, such as the quaternion’s magnitude and phase measures, to discriminate between computer generated (CG) and photographic (PG) images. Meanwhile, we extend the classic Markov features into the quaternion domain to develop the quaternion Markov statistical features for color images. Experimental results show that the proposed scheme can achieve the classification rate of 92.70%, which is 6.89% higher than the classic Markov features.

Keywords:

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