Name
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. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1007/978-3-642-18405-5_7 | IWDW |
Keywords | Field | DocType |
potential compression history,potential jpeg compression history,jpeg compression,independent jpeg group,generalized gaussian model,dct coefficient,history detection,custom quantization table,non-quantized block,novel method,bitmap image,quantized ac block dct,quantized block,statistical model,statistical analysis,probability mass function,jpeg,pmf | Lossless JPEG,Compression artifact,Computer science,Discrete cosine transform,Color Cell Compression,Theoretical computer science,JPEG,JPEG 2000,Quantization (image processing),Data compression | Conference |
Volume | ISSN | Citations |
6526 | 0302-9743 | 1 |
PageRank | References | Authors |
0.35 | 10 | 2 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Gopal Narayanan | 1 | 1 | 0.35 |
| Yun Qing Shi | 2 | 518 | 23.34 |