@inproceedings{88d68cdb383f4a87ac9f9d0428f5d2c8,
title = "A statistical model for quantized AC block DCT coefficients in JPEG compression and its application to detecting potential compression history in bitmap images",
abstract = "We first develop a probability mass function (PMF) for quantized block discrete cosine transform (DCT) coefficients in JPEG compression using statistical analysis of quantization, with a Generalized Gaussian model being considered as the PDF for non-quantized block DCT coefficients. We subsequently propose a novel method to detect potential JPEG compression history in bitmap images using the PMF that has been developed. We show that this method outperforms a classical approach to compression history detection in terms of effectiveness. We also show that it detects history with both independent JPEG group (IJG) and custom quantization tables.",
keywords = "Compression History, Generalized Gaussian, Image Forensics, JPEG, PMF",
author = "Gopal Narayanan and Shi, {Yun Qing}",
year = "2011",
doi = "10.1007/978-3-642-18405-5_7",
language = "English (US)",
isbn = "9783642184048",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "75--89",
booktitle = "Digital Watermarking - 9th International Workshop, IWDW 2010, Revised Selected Papers",
address = "Germany",
}