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Fine-grained object categorization aims for distinguishing objects of subordinate categories that belong to the same entry-level object category. The task is challenging due to the facts that (1) training images with ground-truth labels are…

Computer Vision and Pattern Recognition · Computer Science 2019-12-05 Yabin Zhang , Kui Jia , Zhixin Wang

Accurate understanding of anatomical structures is essential for reliably staging certain dental diseases. A way of introducing this within semantic segmentation models is by utilising hierarchy-aware methodologies. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2026-02-20 Ryan Banks , Camila Lindoni Azevedo , Hongying Tang , Yunpeng Li

Forged images have a ubiquitous presence in today's world due to ease of availability of image manipulation tools. In this letter, we propose a deep learning-based novel approach which utilizes the inherent relationship between DCT…

Image and Video Processing · Electrical Eng. & Systems 2020-03-23 Vinay Verma , Deepak Singh , Nitin Khanna

Our research focuses on few-shot fine-grained image classification, which faces two major challenges: appearance similarity of fine-grained objects and limited number of samples. To preserve the appearance details of images, traditional…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Shulei Qiu , Wanqi Yang , Ming Yang

Fine-grained image recognition is very challenging due to the difficulty of capturing both semantic global features and discriminative local features. Meanwhile, these two features are not easy to be integrated, which are even conflicting…

Computer Vision and Pattern Recognition · Computer Science 2021-02-22 Shaokang Yang , Shuai Liu , Cheng Yang , Changhu Wang

With the rapid advancements in image generation, synthetic images have become increasingly realistic, posing significant societal risks, such as misinformation and fraud. Forgery Image Detection and Localization (FIDL) thus emerges as…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Qing Huang , Zhipei Xu , Xuanyu Zhang , Xiangyu Yu , Jian Zhang

On the basis of DefakeHop, an enhanced lightweight Deepfake detector called DefakeHop++ is proposed in this work. The improvements lie in two areas. First, DefakeHop examines three facial regions (i.e., two eyes and mouth) while DefakeHop++…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Hong-Shuo Chen , Shuowen Hu , Suya You , C. -C. Jay Kuo

Existing face forgery detection methods usually treat face forgery detection as a binary classification problem and adopt deep convolution neural networks to learn discriminative features. The ideal discriminative features should be only…

Computer Vision and Pattern Recognition · Computer Science 2022-07-11 Wanyi Zhuang , Qi Chu , Haojie Yuan , Changtao Miao , Bin Liu , Nenghai Yu

Most classification models treat different object classes in parallel and the misclassifications between any two classes are treated equally. In contrast, human beings can exploit high-level information in making a prediction of an unknown…

Computer Vision and Pattern Recognition · Computer Science 2021-04-28 Kaidong Li , Nina Y. Wang , Yiju Yang , Guanghui Wang

Digital identity verification systems used in remote onboarding rely on document images to authenticate users, making them vulnerable to localized manipulations of key identity fields such as facial photographs and textual information.…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Abhishek Kumar , Riya Tapwal , Carsten Maple , Mark Hooper

Driven by the new generation of multi-modal large models, such as Stable Diffusion (SD), image manipulation technologies have advanced rapidly, posing significant challenges to image forensics. However, existing image forgery localization…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Yang Su , Shunquan Tan , Jiwu Huang

Federated Learning (FL) in Deep Learning (DL)-automated medical image segmentation helps preserving privacy by enabling collaborative model training without sharing patient data. However, FL faces challenges with data heterogeneity among…

Image and Video Processing · Electrical Eng. & Systems 2024-08-22 Philip Schutte , Valentina Corbetta , Regina Beets-Tan , Wilson Silva

On the one hand, nowadays, fake news articles are easily propagated through various online media platforms and have become a grand threat to the trustworthiness of information. On the other hand, our understanding of the language of fake…

Computation and Language · Computer Science 2019-04-11 Hamid Karimi , Jiliang Tang

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

The advancement of image editing tools has enabled malicious manipulation of sensitive document images, underscoring the need for robust document image forgery detection.Though forgery detectors for natural images have been extensively…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Kahim Wong , Jicheng Zhou , Haiwei Wu , Yain-Whar Si , Jiantao Zhou

Image classification is a fundamental task in computer vision with diverse applications, ranging from autonomous systems to medical imaging. The CIFAR-10 dataset is a widely used benchmark to evaluate the performance of classification…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Xiaoran Yang , Shuhan Yu , Wenxi Xu

In recent years, image manipulation is becoming increasingly more accessible, yielding more natural-looking images, owing to the modern tools in image processing and computer vision techniques. The task of the identification of forged…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Akash Kumar , Arnav Bhavasar

Image forgery has become a critical threat with the rapid proliferation of AI-based generation tools, which make it increasingly easy to synthesize realistic but fraudulent facial content. Existing detection methods achieve near-perfect…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Wyatt McCurdy , Xin Zhang , Yuqi Song , Min Gao

As realistic facial manipulation technologies have achieved remarkable progress, social concerns about potential malicious abuse of these technologies bring out an emerging research topic of face forgery detection. However, it is extremely…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Yuyang Qian , Guojun Yin , Lu Sheng , Zixuan Chen , Jing Shao

Multimodal representation is crucial for E-commerce tasks such as identical product retrieval. Large representation models (e.g., VLM2Vec) demonstrate strong multimodal understanding capabilities, yet they struggle with fine-grained…

Computation and Language · Computer Science 2026-04-23 Biao Zhang , Lixin Chen , Bin Zhang , Zongwei Wang , Tong Liu , Bo Zheng