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In this work, we present a learning based method focusing on the convolutional neural network (CNN) architecture to detect these forgeries. We consider the detection of both copy-move forgeries and inpainting based forgeries. For these, we…

Computer Vision and Pattern Recognition · Computer Science 2022-02-03 Ankit Katiyar , Arnav Bhavsar

An increasing number of digital images are being shared and accessed through websites, media, and social applications. Many of these images have been modified and are not authentic. Recent advances in the use of deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 David Güera , Yu Wang , Luca Bondi , Paolo Bestagini , Stefano Tubaro , Edward J. Delp

Convolutional Neural Networks (CNN) have become de fact state-of-the-art for the main computer vision tasks. However, due to the complex underlying structure their decisions are hard to understand which limits their use in some context of…

Computer Vision and Pattern Recognition · Computer Science 2021-07-02 Nina Schaaf , Omar de Mitri , Hang Beom Kim , Alexander Windberger , Marco F. Huber

Camera fingerprints are precious tools for a number of image forensics tasks. A well-known example is the photo response non-uniformity (PRNU) noise pattern, a powerful device fingerprint. Here, to address the image forgery localization…

Computer Vision and Pattern Recognition · Computer Science 2018-08-30 Davide Cozzolino , Luisa Verdoliva

Recently, Convolutional Neural Networks (CNNs) have been widely used to solve the illuminant estimation problem and have often led to state-of-the-art results. Standard approaches operate directly on the input image. In this paper, we argue…

Image and Video Processing · Electrical Eng. & Systems 2021-11-11 Firas Laakom , Jenni Raitoharju , Jarno Nikkanen , Alexandros Iosifidis , Moncef Gabbouj

Detecting the camera model used to shoot a picture enables to solve a wide series of forensic problems, from copyright infringement to ownership attribution. For this reason, the forensic community has developed a set of camera model…

Computer Vision and Pattern Recognition · Computer Science 2017-10-11 Luca Bondi , Luca Baroffio , David Güera , Paolo Bestagini , Edward J. Delp , Stefano Tubaro

In this paper, we present an approach for evaluating attribution maps, which play a central role in interpreting the predictions of convolutional neural networks (CNNs). We show that the widely used insertion/deletion metrics are…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Lars Nieradzik , Henrike Stephani , Janis Keuper

Attribution of paintings is a critical problem in art history. This study extends machine learning analysis to surface topography of painted works. A controlled study of positive attribution was designed with paintings produced by a class…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 F. Ji , M. S. McMaster , S. Schwab , G. Singh , L. N. Smith , S. Adhikari , M. O'Dwyer , F. Sayed , A. Ingrisano , D. Yoder , E. S. Bolman , I. T. Martin , M. Hinczewski , K. D. Singer

Source identification is an important topic in image forensics, since it allows to trace back the origin of an image. This represents a precious information to claim intellectual property but also to reveal the authors of illicit materials.…

Neural and Evolutionary Computing · Computer Science 2020-08-26 Sara Mandelli , Davide Cozzolino , Paolo Bestagini , Luisa Verdoliva , Stefano Tubaro

Numerous image processing techniques (IPTs) have been employed to detect crack defects, offering an alternative to human-conducted onsite inspections. These IPTs manipulate images to extract defect features, particularly cracks in surfaces…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Mohsen Asghari Ilani , Leila Amini , Hossein Karimi , Maryam Shavali Kuhshuri

In this paper, we propose to utilize Convolutional Neural Networks (CNNs) and the segmentation-based multi-scale analysis to locate tampered areas in digital images. First, to deal with color input sliding windows of different scales, a…

Computer Vision and Pattern Recognition · Computer Science 2018-12-26 Yaqi Liu , Qingxiao Guan , Xianfeng Zhao , Yun Cao

Convolutional neural networks (CNNs) are commonly used for image classification. Saliency methods are examples of approaches that can be used to interpret CNNs post hoc, identifying the most relevant pixels for a prediction following the…

Machine Learning · Computer Science 2020-10-01 Nicholas Halliwell , Freddy Lecue

Blind or no-reference (NR) perceptual picture quality prediction is a difficult, unsolved problem of great consequence to the social and streaming media industries that impacts billions of viewers daily. Unfortunately, popular NR prediction…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Zhenqiang Ying , Haoran Niu , Praful Gupta , Dhruv Mahajan , Deepti Ghadiyaram , Alan Bovik

Camera model identification refers to the problem of linking a picture to the camera model used to shoot it. As this might be an enabling factor in different forensic applications to single out possible suspects (e.g., detecting the author…

Computer Vision and Pattern Recognition · Computer Science 2019-11-15 Pedro Ribeiro Mendes Júnior , Luca Bondi , Paolo Bestagini , Stefano Tubaro , Anderson Rocha

Due to limited computational and memory resources, current deep learning models accept only rather small images in input, calling for preliminary image resizing. This is not a problem for high-level vision problems, where discriminative…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Francesco Marra , Diego Gragnaniello , Luisa Verdoliva , Giovanni Poggi

Convolutional neural network (CNN) has achieved unprecedented success in image super-resolution tasks in recent years. However, the network's performance depends on the distribution of the training sets and degrades on out-of-distribution…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Aupendu Kar , Prabir Kumar Biswas

The rapid evolution of digital image manipulation techniques poses significant challenges for content verification, with models such as stable diffusion and mid-journey producing highly realistic, yet synthetic, images that can deceive…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Alejandro Marco Montejano , Angela Sanchez Perez , Javier Barrachina , David Ortiz-Perez , Manuel Benavent-Lledo , Jose Garcia-Rodriguez

Learning-based methods especially with convolutional neural networks (CNN) are continuously showing superior performance in computer vision applications, ranging from image classification to restoration. For image classification, most…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Xiaoyu Lin

Neural networks have shown remarkable performance in computer vision, but their deployment in numerous scientific and technical fields is challenging due to their black-box nature. Scientists and practitioners need to evaluate the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Gabriel Kasmi , Laurent Dubus , Yves-Marie Saint Drenan , Philippe Blanc

We show that correlations between the camera used to acquire an image and the class label of that image can be exploited by convolutional neural networks (CNN), resulting in a model that "cheats" at an image classification task by…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Philip T. Jackson , Stephen Bonner , Ning Jia , Christopher Holder , Jon Stonehouse , Boguslaw Obara
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