Proceedings ArticleDOI
Image tampering localization via estimating the non-aligned double JPEG compression
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TLDR
An efficient method to locate the forged parts in a tampered JPEG image by estimating the shift of NA-DJPEG compression and it doesn't need an image dataset to train a machine learning based classifier or to get a proper threshold.Abstract:
In this paper, we present an efficient method to locate the forged parts in a tampered JPEG image The forged region usually undergoes a different JPEG compression with the background region in JPEG image forgeries When a JPEG image is cropped to another host JPEG image and resaved in JPEG format, the JPEG block grid of the tampered region often mismatches the JPEG block grid of the host image with a certain shift This phenomenon is called non-aligned double JPEG compression (NA-DJPEG) In this paper, we identify different JPEG compression forms by estimating the shift of NA-DJPEG compression Our shift estimating approach is based on the percentage of non zeros of JPEG coefficients in different situations Compared to previous work, our tampering location method (i) performances better when dealing with small image size, (ii) is robust to common tampering processing such as resizing, rotating, blurring and so on, (iii) doesn't need an image dataset to train a machine learning based classifier or to get a proper thresholdread more
Citations
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Journal ArticleDOI
An Effective Method for Detecting Double JPEG Compression With the Same Quantization Matrix
TL;DR: An effective error-based statistical feature extraction scheme that can significantly outperform the state-of-the-art method to detect double JPEG compression with the same quantization matrix.
Journal ArticleDOI
Detecting Double JPEG Compressed Color Images With the Same Quantization Matrix in Spherical Coordinates
TL;DR: An effective method to detect the recompression in the color images by using the conversion error, rounding error, and truncation error on the pixel in the spherical coordinate system is proposed and experimental results show that the performance of the proposed method is better than the existing methods.
Journal ArticleDOI
Detection of Triple JPEG Compressed Color Images
TL;DR: Three-class classification forensics of JPEG compressed color images with the same quantization matrix is proposed and achieves good performance and is better than the state-of-the-art approaches investigated.
Proceedings ArticleDOI
Tamper Detection Method for Clipped Double JPEG Compression Image
TL;DR: Experiments results show that the proposed tamper detection method is robust and effective in detecting the clipped double JPEG compression image and the method is also applicable to the unclipped double JPEG compressed image.
Book ChapterDOI
Detecting Non-aligned Double JPEG Compression Based on Refined Intensity Difference and Calibration
TL;DR: A novel feature set to detect NA-DJPEG compression based on refined intensity difference (RID), a new measure for blocking artifacts, which outperforms the compared feature sets in most cases.
References
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Book ChapterDOI
Feature-Based steganalysis for JPEG images and its implications for future design of steganographic schemes
TL;DR: In this article, a feature-based steganalytic method for JPEG images is proposed, where the features are calculated as an L 1 norm of the difference between a specific macroscopic functional calculated from the stego image and the same functional obtained from a decompressed, cropped, and recompressed stegos image.
Proceedings ArticleDOI
An efficient and robust method for detecting copy-move forgery
TL;DR: The proposed features can detect duplicated region in the images very accurately, even when the copied region was undergone severe image manipulations and use of counting bloom filters offers a considerable improvement in time efficiency at the expense of a slight reduction in the robustness.
Journal ArticleDOI
Exposing Digital Forgeries From JPEG Ghosts
TL;DR: A technique to detect whether the part of an image was initially compressed at a lower quality than the rest of the image is described, applicable to images of high and low quality as well as resolution.
Journal ArticleDOI
Detection of Double-Compression in JPEG Images for Applications in Steganography
Tomas Pevny,Jessica Fridrich +1 more
TL;DR: A method for the detection of double JPEG compression and a maximum-likelihood estimator of the primary quality factor are presented, essential for construction of accurate targeted and blind steganalysis methods for JPEG images.
Journal Article
Feature-based steganalysis for JPEG images and its implications for future design of steganographic schemes
TL;DR: A new feature-based steganalytic method for JPEG images that is a linear classifier trained on feature vectors corresponding to cover and stego images and used as a benchmark for comparing JPEG steganographic algorithms and evaluating their embedding mechanisms.
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