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Semi-supervised domain adaptation (SSDA) is quite a challenging problem requiring methods to overcome both 1) overfitting towards poorly annotated data and 2) distribution shift across domains. Unfortunately, a simple combination of domain…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Can Qin , Lichen Wang , Qianqian Ma , Yu Yin , Huan Wang , Yun Fu

Semi-supervised semantic segmentation requires the model to effectively propagate the label information from limited annotated images to unlabeled ones. A challenge for such a per-pixel prediction task is the large intra-class variation,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Hai-Ming Xu , Lingqiao Liu , Qiuchen Bian , Zhen Yang

We present ReCo, a contrastive learning framework designed at a regional level to assist learning in semantic segmentation. ReCo performs semi-supervised or supervised pixel-level contrastive learning on a sparse set of hard negative…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Shikun Liu , Shuaifeng Zhi , Edward Johns , Andrew J. Davison

Capturing emotions within a conversation plays an essential role in modern dialogue systems. However, the weak correlation between emotions and semantics brings many challenges to emotion recognition in conversation (ERC). Even semantically…

Artificial Intelligence · Computer Science 2022-10-20 Xiaohui Song , Longtao Huang , Hui Xue , Songlin Hu

Unsupervised domain adaptation is critical in various computer vision tasks, such as object detection, instance segmentation, and semantic segmentation, which aims to alleviate performance degradation caused by domain-shift. Most of…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Congcong Li , Dawei Du , Libo Zhang , Longyin Wen , Tiejian Luo , Yanjun Wu , Pengfei Zhu

Although unsupervised domain adaptation (UDA) is a promising direction to alleviate domain shift, they fall short of their supervised counterparts. In this work, we investigate relatively less explored semi-supervised domain adaptation…

Computer Vision and Pattern Recognition · Computer Science 2023-07-07 Hritam Basak , Zhaozheng Yin

Enhancing feature transferability by matching marginal distributions has led to improvements in domain adaptation, although this is at the expense of feature discrimination. In particular, the ideal joint hypothesis error in the target…

Computer Vision and Pattern Recognition · Computer Science 2020-06-20 Changhwa Park , Jonghyun Lee , Jaeyoon Yoo , Minhoe Hur , Sungroh Yoon

Comprehensive semantic segmentation is one of the key components for robust scene understanding and a requirement to enable autonomous driving. Driven by large scale datasets, convolutional neural networks show impressive results on this…

Computer Vision and Pattern Recognition · Computer Science 2019-08-30 Jan-Nico Zaech , Dengxin Dai , Martin Hahner , Luc Van Gool

Graph Contrastive Learning (GCL) has recently drawn much research interest for learning generalizable node representations in a self-supervised manner. In general, the contrastive learning process in GCL is performed on top of the…

Machine Learning · Computer Science 2022-12-06 Kaize Ding , Yancheng Wang , Yingzhen Yang , Huan Liu

Deep convolutional neural networks for semantic segmentation achieve outstanding accuracy, however they also have a couple of major drawbacks: first, they do not generalize well to distributions slightly different from the one of the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Francesco Barbato , Marco Toldo , Umberto Michieli , Pietro Zanuttigh

Accurate segmentation of the optic disc and cup is critical for the early diagnosis and management of ocular diseases such as glaucoma. However, segmentation models trained on one dataset often suffer significant performance degradation…

Computer Vision and Pattern Recognition · Computer Science 2025-09-15 Rini Smita Thakur , Rajeev Ranjan Dwivedi , Vinod K Kurmi

Training models dedicated to semantic segmentation requires a large amount of pixel-wise annotated data. Due to their costly nature, these annotations might not be available for the task at hand. To alleviate this problem, unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Fei Pan , Francois Rameau , Junsik Kim , In So Kweon

Learning semantic segmentation models requires a huge amount of pixel-wise labeling. However, labeled data may only be available abundantly in a domain different from the desired target domain, which only has minimal or no annotations. In…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Sujoy Paul , Yi-Hsuan Tsai , Samuel Schulter , Amit K. Roy-Chowdhury , Manmohan Chandraker

Unsupervised Domain Adaptation (UDA) of semantic segmentation transfers labeled source knowledge to an unlabeled target domain by relying on accessing both the source and target data. However, the access to source data is often restricted…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Shao-Yuan Lo , Poojan Oza , Sumanth Chennupati , Alejandro Galindo , Vishal M. Patel

LiDAR semantic segmentation provides 3D semantic information about the environment, an essential cue for intelligent systems during their decision making processes. Deep neural networks are achieving state-of-the-art results on large public…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Inigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

Performance of a pre-trained semantic segmentation model is likely to substantially decrease on data from a new domain. We show a pre-trained model can be adapted to unlabelled target domain data by calculating soft-label prototypes under…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Ondrej Bohdal , Da Li , Timothy Hospedales

Multi-source unsupervised domain adaptation~(MSDA) aims at adapting models trained on multiple labeled source domains to an unlabeled target domain. In this paper, we propose a novel multi-source domain adaptation framework based on…

Computer Vision and Pattern Recognition · Computer Science 2021-06-21 Jianzhong He , Xu Jia , Shuaijun Chen , Jianzhuang Liu

Medical image segmentation is critical for computer-aided diagnosis. However, dense pixel-level annotation is time-consuming and expensive, and medical datasets often exhibit severe class imbalance. Such imbalance causes minority structures…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Yingxue Su , Yiheng Zhong , Keying Zhu , Zimu Zhang , Zhuoru Zhang , Yifang Wang , Yuxin Zhang , Jingxin Liu

To learn target discriminative representations, using pseudo-labels is a simple yet effective approach for unsupervised domain adaptation. However, the existence of false pseudo-labels, which may have a detrimental influence on learning…

Computer Vision and Pattern Recognition · Computer Science 2019-08-02 Jaehoon Choi , Minki Jeong , Taekyung Kim , Changick Kim

Prohibited item detection based on X-ray images is one of the most effective security inspection methods. However, the foreground-background feature coupling caused by the overlapping phenomenon specific to X-ray images makes general…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Mingyuan Li , Tong Jia , Hao Wang , Bowen Ma , Hui Lu , Shiyi Guo , Da Cai , Dongyue Chen