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Various deepfake detectors have been proposed, but challenges still exist to detect images of unknown categories or GAN models outside of the training settings. Such issues arise from the overfitting issue, which we discover from our own…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Yonghyun Jeong , Doyeon Kim , Youngmin Ro , Jongwon Choi

Generative Adversarial Networks (GANs) have the ability to generate images that are visually indistinguishable from real images. However, recent studies have revealed that generated and real images share significant differences in the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Ziqiang Li , Pengfei Xia , Xue Rui , Bin Li

The key objective of Generative Adversarial Networks (GANs) is to generate new data with the same statistics as the provided training data. However, multiple recent works show that state-of-the-art architectures yet struggle to achieve this…

Computer Vision and Pattern Recognition · Computer Science 2021-11-05 Katja Schwarz , Yiyi Liao , Andreas Geiger

Recent successes in Generative Adversarial Networks (GAN) have affirmed the importance of using more data in GAN training. Yet it is expensive to collect data in many domains such as medical applications. Data Augmentation (DA) has been…

Computer Vision and Pattern Recognition · Computer Science 2021-02-24 Ngoc-Trung Tran , Viet-Hung Tran , Ngoc-Bao Nguyen , Trung-Kien Nguyen , Ngai-Man Cheung

Generative adversarial networks (GANs) have shown remarkable success in generating realistic images and are increasingly used in medical imaging for image-to-image translation tasks. However, GANs tend to suffer from a frequency bias…

Image and Video Processing · Electrical Eng. & Systems 2023-10-18 Ivo M. Baltruschat , Felix Kreis , Alexander Hoelscher , Melanie Dohmen , Matthias Lenga

Existing few-shot image generation approaches typically employ fusion-based strategies, either on the image or the feature level, to produce new images. However, previous approaches struggle to synthesize high-frequency signals with fine…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Mengping Yang , Zhe Wang , Ziqiu Chi , Wenyi Feng

Federated Learning (FL) provides a privacy-preserving mechanism for distributed training of machine learning models on networked devices (e.g., mobile devices, IoT edge nodes). It enables Artificial Intelligence (AI) at the edge by creating…

Machine Learning · Computer Science 2024-04-03 Paul Joe Maliakel , Shashikant Ilager , Ivona Brandic

This research addresses the challenge of developing a universal deepfake detector that can effectively identify unseen deepfake images despite limited training data. Existing frequency-based paradigms have relied on frequency-level…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Chuangchuang Tan , Yao Zhao , Shikui Wei , Guanghua Gu , Ping Liu , Yunchao Wei

As the success of Generative Adversarial Networks (GANs) on natural images quickly propels them into various real-life applications across different domains, it becomes more and more important to clearly understand their limitations.…

Machine Learning · Computer Science 2020-12-21 Mahyar Khayatkhoei , Ahmed Elgammal

Training generative adversarial networks (GAN) using too little data typically leads to discriminator overfitting, causing training to diverge. We propose an adaptive discriminator augmentation mechanism that significantly stabilizes…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Tero Karras , Miika Aittala , Janne Hellsten , Samuli Laine , Jaakko Lehtinen , Timo Aila

Recent work has shown generative adversarial networks (GANs) can generate highly realistic images, that are often indistinguishable (by humans) from real images. Most images so generated are not contained in the training dataset, suggesting…

Computer Vision and Pattern Recognition · Computer Science 2020-08-11 Miaoyun Zhao , Yulai Cong , Lawrence Carin

This paper presents an innovative approach to enhancing few-shot learning by integrating data augmentation with model fine-tuning in a framework designed to tackle the challenges posed by small-sample data. Recognizing the critical…

Machine Learning · Computer Science 2024-11-26 Yinqiu Feng , Aoran Shen , Jiacheng Hu , Yingbin Liang , Shiru Wang , Junliang Du

Generative adversarial nets (GANs) have been remarkably successful at learning to sample from distributions specified by a given dataset, particularly if the given dataset is reasonably large compared to its dimensionality. However, given…

Machine Learning · Computer Science 2022-11-29 Tiantian Fang , Ruoyu Sun , Alex Schwing

Image classification datasets are often imbalanced, characteristic that negatively affects the accuracy of deep-learning classifiers. In this work we propose balancing GAN (BAGAN) as an augmentation tool to restore balance in imbalanced…

Computer Vision and Pattern Recognition · Computer Science 2018-06-06 Giovanni Mariani , Florian Scheidegger , Roxana Istrate , Costas Bekas , Cristiano Malossi

Leveraging the power of deep learning to design nanophotonic devices has been an area of active research in recent times, with Generative Adversarial Networks (GANs) being a popular choice alongside autoencoder-based methods. However, both…

Few-shot image generation aims to generate images of high quality and great diversity with limited data. However, it is difficult for modern GANs to avoid overfitting when trained on only a few images. The discriminator can easily remember…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Jingyuan Zhu , Huimin Ma , Jiansheng Chen , Jian Yuan

Image reconstruction and synthesis have witnessed remarkable progress thanks to the development of generative models. Nonetheless, gaps could still exist between the real and generated images, especially in the frequency domain. In this…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Liming Jiang , Bo Dai , Wayne Wu , Chen Change Loy

Generative Adversarial Networks (GANs) have brought about rapid progress towards generating photorealistic images. Yet the equitable allocation of their modeling capacity among subgroups has received less attention, which could lead to…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Ning Yu , Ke Li , Peng Zhou , Jitendra Malik , Larry Davis , Mario Fritz

We introduce FewGAN, a generative model for generating novel, high-quality and diverse images whose patch distribution lies in the joint patch distribution of a small number of N>1 training samples. The method is, in essence, a hierarchical…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Lior Ben-Moshe , Sagie Benaim , Lior Wolf

Domain generalization methods aim to learn transferable knowledge from source domains that can generalize well to unseen target domains. Recent studies show that neural networks frequently suffer from a simplicity-biased learning behavior…

Machine Learning · Computer Science 2024-10-22 Xilin He , Jingyu Hu , Qinliang Lin , Cheng Luo , Weicheng Xie , Siyang Song , Muhammad Haris Khan , Linlin Shen
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