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Weakly supervised semantic segmentation (WSSS) methods using class labels often rely on class activation maps (CAMs) to localize objects. However, traditional CAM-based methods struggle with partial activations and imprecise object…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Dewen Zeng , Xinrong Hu , Yu-Jen Chen , Yawen Wu , Xiaowei Xu , Yiyu Shi

In recent years, deep learning-based video manipulation methods have become widely accessible to masses. With little to no effort, people can easily learn how to generate deepfake videos with only a few victims or target images. This…

计算机视觉与模式识别 · 计算机科学 2020-09-17 Shahroz Tariq , Sangyup Lee , Simon S. Woo

Deepfake detection refers to detecting artificially generated or edited faces in images or videos, which plays an essential role in visual information security. Despite promising progress in recent years, Deepfake detection remains a…

计算机视觉与模式识别 · 计算机科学 2023-12-11 Chunlei Peng , Huiqing Guo , Decheng Liu , Nannan Wang , Ruimin Hu , Xinbo Gao

We propose a novel contrastive learning framework to effectively address the challenges of data heterogeneity in federated learning. We first analyze the inconsistency of gradient updates across clients during local training and establish…

机器学习 · 计算机科学 2024-06-03 Seonguk Seo , Jinkyu Kim , Geeho Kim , Bohyung Han

Image-to-image translation models transfer images from input domain to output domain in an endeavor to retain the original content of the image. Contrastive Unpaired Translation is one of the existing methods for solving such problems.…

计算机视觉与模式识别 · 计算机科学 2021-09-28 Bernard Spiegl

Although vanilla Convolutional Neural Network (CNN) based detectors can achieve satisfactory performance on fake face detection, we observe that the detectors tend to seek forgeries on a limited region of face, which reveals that the…

计算机视觉与模式识别 · 计算机科学 2021-04-15 Chengrui Wang , Weihong Deng

Forgery facial images and videos have increased the concern of digital security. It leads to the significant development of detecting forgery data recently. However, the data, especially the videos published on the Internet, are usually…

计算机视觉与模式识别 · 计算机科学 2023-02-14 Jiajun Huang , Xinqi Zhu , Chengbin Du , Siqi Ma , Surya Nepal , Chang Xu

Over the years, researchers have proposed various approaches to JPEG forgery detection and localization. In most cases, experimental evaluation was limited to JPEG quality levels that are multiples of 5 or 10. Each study used a different…

多媒体 · 计算机科学 2019-01-23 Pawel Korus

Differences in forgery attributes of images generated in CNN-synthesized and image-editing domains are large, and such differences make a unified image forgery detection and localization (IFDL) challenging. To this end, we present a…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Xiao Guo , Xiaohong Liu , Zhiyuan Ren , Steven Grosz , Iacopo Masi , Xiaoming Liu

Dense local descriptors and machine learning have been used with success in several applications, like classification of textures, steganalysis, and forgery detection. We develop a new image forgery detector building upon some descriptors…

计算机视觉与模式识别 · 计算机科学 2013-11-28 Davide Cozzolino , Diego Gragnaniello , Luisa Verdoliva

Differences in forgery attributes of images generated in CNN-synthesized and image-editing domains are large, and such differences make a unified image forgery detection and localization (IFDL) challenging. To this end, we present a…

计算机视觉与模式识别 · 计算机科学 2024-11-01 Xiao Guo , Xiaohong Liu , Iacopo Masi , Xiaoming Liu

Recent studies in deepfake detection have yielded promising results when the training and testing face forgeries are from the same dataset. However, the problem remains challenging when one tries to generalize the detector to forgeries…

计算机视觉与模式识别 · 计算机科学 2022-04-04 Liang Chen , Yong Zhang , Yibing Song , Lingqiao Liu , Jue Wang

Deepfake technology has given rise to a spectrum of novel and compelling applications. Unfortunately, the widespread proliferation of high-fidelity fake videos has led to pervasive confusion and deception, shattering our faith that seeing…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Zhongjie Ba , Qingyu Liu , Zhenguang Liu , Shuang Wu , Feng Lin , Li Lu , Kui Ren

The increasing realism of generated images has raised significant concerns about their potential misuse, necessitating robust detection methods. Current approaches mainly rely on training binary classifiers, which depend heavily on the…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Yonggang Zhang , Jun Nie , Xinmei Tian , Mingming Gong , Kun Zhang , Bo Han

Supervised deep learning needs a large amount of labeled data to achieve high performance. However, in medical imaging analysis, each site may only have a limited amount of data and labels, which makes learning ineffective. Federated…

图像与视频处理 · 电气工程与系统科学 2022-04-26 Yawen Wu , Dewen Zeng , Zhepeng Wang , Yiyu Shi , Jingtong Hu

Existing face forgery detection models try to discriminate fake images by detecting only spatial artifacts (e.g., generative artifacts, blending) or mainly temporal artifacts (e.g., flickering, discontinuity). They may experience…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Zhendong Wang , Jianmin Bao , Wengang Zhou , Weilun Wang , Houqiang Li

Although effective deepfake detection models have been developed in recent years, recent studies have revealed that these models can result in unfair performance disparities among demographic groups, such as race and gender. This can lead…

计算机视觉与模式识别 · 计算机科学 2024-03-03 Li Lin , Xinan He , Yan Ju , Xin Wang , Feng Ding , Shu Hu

Image forensic plays a crucial role in both criminal investigations (e.g., dissemination of fake images to spread racial hate or false narratives about specific ethnicity groups) and civil litigation (e.g., defamation). Increasingly,…

密码学与安全 · 计算机科学 2020-10-20 Ehsan Nowroozi , Ali Dehghantanha , Reza M. Parizi , Kim-Kwang Raymond Choo

Creating fake images and videos such as "Deepfake" has become much easier these days due to the advancement in Generative Adversarial Networks (GANs). Moreover, recent research such as the few-shot learning can create highly realistic…

计算机视觉与模式识别 · 计算机科学 2020-08-11 Hyeonseong Jeon , Youngoh Bang , Simon S. Woo

It has become increasingly challenging to distinguish real faces from their visually realistic fake counterparts, due to the great advances of deep learning based face manipulation techniques in recent years. In this paper, we introduce a…

计算机视觉与模式识别 · 计算机科学 2020-09-15 Disheng Feng , Xuequan Lu , Xufeng Lin