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Diffusion models have recently been used for medical image generation because of their high image quality. In this study, we focus on generating medical images with ordinal classes, which have ordinal relationships, such as severity levels.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Shumpei Takezaki , Seiichi Uchida

Visual attribute imbalance is a common yet underexplored issue in image classification, significantly impacting model performance and generalization. In this work, we first define the first-level and second-level attributes of images and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Jiayi Chen , Yanbiao Ma , Andi Zhang , Weidong Tang , Wei Dai , Bowei Liu

The data imbalance problem is a frequent bottleneck in the classification performance of neural networks. In this paper, we propose a novel supervised discriminative feature generation (DFG) method for a minority class dataset. DFG is based…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Sungho Suh , Paul Lukowicz , Yong Oh Lee

Deep generative models have achieved conspicuous progress in realistic image synthesis with multifarious conditional inputs, while generating diverse yet high-fidelity images remains a grand challenge in conditional image generation. This…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Fangneng Zhan , Yingchen Yu , Rongliang Wu , Jiahui Zhang , Kaiwen Cui , Changgong Zhang , Shijian Lu

Dynamic graphs are extensively employed for detecting anomalous behavior in nodes within the Internet of Things (IoT). Graph generative models are often used to address the issue of imbalanced node categories in dynamic graphs.…

Robotics · Computer Science 2024-12-13 Munan Li , Xianshi Su , Runze Ma , Tongbang Jiang , Zijian Li , Tony Q. S. Quek

We introduce a challenging training scheme of conditional GANs, called open-set semi-supervised image generation, where the training dataset consists of two parts: (i) labeled data and (ii) unlabeled data with samples belonging to one of…

Computer Vision and Pattern Recognition · Computer Science 2022-05-02 Kai Katsumata , Duc Minh Vo , Hideki Nakayama

We propose a new generative adversarial architecture to mitigate imbalance data problem for the task of medical image semantic segmentation where the majority of pixels belong to a healthy region and few belong to lesion or non-health…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Mina Rezaei , Haojin Yang , Christoph Meinel

In this paper, we investigate a new framework for image classification that adaptively generates spatial representations. Our strategy is based on a sequential process that learns to explore the different regions of any image in order to…

Computer Vision and Pattern Recognition · Computer Science 2014-02-12 Gabriel Dulac-Arnold , Ludovic Denoyer , Nicolas Thome , Matthieu Cord , Patrick Gallinari

This work proposes the continuous conditional generative adversarial network (CcGAN), the first generative model for image generation conditional on continuous, scalar conditions (termed regression labels). Existing conditional GANs (cGANs)…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Xin Ding , Yongwei Wang , Zuheng Xu , William J. Welch , Z. Jane Wang

In this paper, we study the problem of multi-domain image generation, the goal of which is to generate pairs of corresponding images from different domains. With the recent development in generative models, image generation has achieved…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Xudong Mao , Qing Li

In most scenarios, conditional image generation can be thought of as an inversion of the image understanding process. Since generic image understanding involves solving multiple tasks, it is natural to aim at generating images via…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Ritika Chakraborty , Nikola Popovic , Danda Pani Paudel , Thomas Probst , Luc Van Gool

We present variational generative adversarial networks, a general learning framework that combines a variational auto-encoder with a generative adversarial network, for synthesizing images in fine-grained categories, such as faces of a…

Computer Vision and Pattern Recognition · Computer Science 2018-02-06 Jianmin Bao , Dong Chen , Fang Wen , Houqiang Li , Gang Hua

Modern GANs excel at generating high quality and diverse images. However, when transferring the pretrained GANs on small target data (e.g., 10-shot), the generator tends to replicate the training samples. Several methods have been proposed…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Yunqing Zhao , Henghui Ding , Houjing Huang , Ngai-Man Cheung

Conditional image generation is the task of generating diverse images using class label information. Although many conditional Generative Adversarial Networks (GAN) have shown realistic results, such methods consider pairwise relations…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Minguk Kang , Jaesik Park

Ordinal regression is aimed at predicting an ordinal class label. In this paper, we consider its semi-supervised formulation, in which we have unlabeled data along with ordinal-labeled data to train an ordinal regressor. There are several…

Machine Learning · Computer Science 2021-06-11 Taira Tsuchiya , Nontawat Charoenphakdee , Issei Sato , Masashi Sugiyama

Class Incremental Learning (CIL) aims to enable models to learn new classes sequentially while retaining knowledge of previous ones. Although current methods have alleviated catastrophic forgetting (CF), recent studies highlight that the…

Machine Learning · Computer Science 2025-03-19 Guannan Lai , Yujie Li , Xiangkun Wang , Junbo Zhang , Tianrui Li , Xin Yang

Diffusion models have emerged as powerful tools for generative tasks, producing high-quality outputs across diverse domains. However, how the generated data responds to the initial noise perturbation in diffusion models remains…

Machine Learning · Computer Science 2025-02-10 Bowen Song , Zecheng Zhang , Zhaoxu Luo , Jason Hu , Wei Yuan , Jing Jia , Zhengxu Tang , Guanyang Wang , Liyue Shen

Vision-based control relies on accurate perception to achieve robustness. However, image distribution changes caused by sensor noise, adverse weather, and dynamic lighting can degrade perception, leading to suboptimal control decisions.…

Robotics · Computer Science 2025-08-01 Carson Sobolewski , Zhenjiang Mao , Kshitij Maruti Vejre , Ivan Ruchkin

This paper presents a language-powered paradigm for ordinal regression. Existing methods usually treat each rank as a category and employ a set of weights to learn these concepts. These methods are easy to overfit and usually attain…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Wanhua Li , Xiaoke Huang , Zheng Zhu , Yansong Tang , Xiu Li , Jie Zhou , Jiwen Lu

The controllable generation of diffusion models aims to steer the model to generate samples that optimize some given objective functions. It is desirable for a variety of applications including image generation, molecule generation, and…

Machine Learning · Computer Science 2025-05-29 Owen Oertell , Shikun Sun , Yiding Chen , Jin Peng Zhou , Zhiyong Wang , Wen Sun