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Few-shot segmentation (FSS) methods perform image segmentation for a particular object class in a target (query) image, using a small set of (support) image-mask pairs. Recent deep neural network based FSS methods leverage high-dimensional…

Computer Vision and Pattern Recognition · Computer Science 2020-05-05 Siddhartha Gairola , Mayur Hemani , Ayush Chopra , Balaji Krishnamurthy

Few-shot semantic segmentation aims at recognizing the object regions of unseen categories with only a few annotated examples as supervision. The key to few-shot segmentation is to establish a robust semantic relationship between the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-24 Xiangwen Shi , Zhe Cui , Shaobing Zhang , Miao Cheng , Lian He , Xianghong Tang

This paper presents an effective few-shot point cloud semantic segmentation approach for real-world applications. Existing few-shot segmentation methods on point cloud heavily rely on the fully-supervised pretrain with large annotated…

Computer Vision and Pattern Recognition · Computer Science 2023-02-22 Jiahui Wang , Haiyue Zhu , Haoren Guo , Abdullah Al Mamun , Cheng Xiang , Tong Heng Lee

Few-shot segmentation (FSS) aims to segment unseen classes given only a few annotated samples. Encouraging progress has been made for FSS by leveraging semantic features learned from base classes with sufficient training samples to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-01 Zewen Zheng , Guoheng Huang , Xiaochen Yuan , Chi-Man Pun , Hongrui Liu , Wing-Kuen Ling

We present PriFit, a semi-supervised approach for label-efficient learning of 3D point cloud segmentation networks. PriFit combines geometric primitive fitting with point-based representation learning. Its key idea is to learn point…

Computer Vision and Pattern Recognition · Computer Science 2022-06-24 Gopal Sharma , Bidya Dash , Aruni RoyChowdhury , Matheus Gadelha , Marios Loizou , Liangliang Cao , Rui Wang , Erik Learned-Miller , Subhransu Maji , Evangelos Kalogerakis

Training semantic segmentation models requires a large amount of finely annotated data, making it hard to quickly adapt to novel classes not satisfying this condition. Few-Shot Segmentation (FS-Seg) tackles this problem with many…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Zhuotao Tian , Xin Lai , Li Jiang , Shu Liu , Michelle Shu , Hengshuang Zhao , Jiaya Jia

Few-shot fine-grained image classification aims to recognize subcategories with high visual similarity using only a limited number of annotated samples. Existing metric learning-based methods typically rely solely on spatial domain…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Meijia Wang , Guochao Wang , Haozhen Chu , Bin Yao , Weichuan Zhang , Yuan Wang , Junpo Yang

In this paper, we mainly focus on the problem of how to learn additional feature representations for few-shot image classification through pretext tasks (e.g., rotation or color permutation and so on). This additional knowledge generated by…

Computer Vision and Pattern Recognition · Computer Science 2022-07-15 Min Zhang , Siteng Huang , Wenbin Li , Donglin Wang

Although Graph Neural Networks (GNNs) have been successful in node classification tasks, their performance heavily relies on the availability of a sufficient number of labeled nodes per class. In real-world situations, not all classes have…

Machine Learning · Computer Science 2023-06-27 Sungwon Kim , Junseok Lee , Namkyeong Lee , Wonjoong Kim , Seungyoon Choi , Chanyoung Park

Semantic image segmentation plays a pivotal role in many vision applications including autonomous driving and medical image analysis. Most of the former approaches move towards enhancing the performance in terms of accuracy with a little…

Computer Vision and Pattern Recognition · Computer Science 2020-01-06 Taha Emara , Hossam E. Abd El Munim , Hazem M. Abbas

3D point cloud semantic segmentation is a challenging topic in the computer vision field. Most of the existing methods in literature require a large amount of fully labeled training data, but it is extremely time-consuming to obtain these…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Shuang Deng , Qiulei Dong , Bo Liu , Zhanyi Hu

Existing fully-supervised point cloud segmentation methods suffer in the dynamic testing environment with emerging new classes. Few-shot point cloud segmentation algorithms address this problem by learning to adapt to new classes at the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-21 Yating Xu , Conghui Hu , Na Zhao , Gim Hee Lee

With the rapid progress of multimodal foundation models and predictive pre-training, an important open question is how to equip 3D point clouds with a pre-training paradigm that is better aligned with next-token and next-embedding learning.…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Yumeng Yao , Jingzhi Dong , Haowen Gu , Tao Chen , Zonghan Wu , Xiaoshui Huang , Yazhou Yao

Due to the fact that fully supervised semantic segmentation methods require sufficient fully-labeled data to work well and can not generalize to unseen classes, few-shot segmentation has attracted lots of research attention. Previous arts…

Computer Vision and Pattern Recognition · Computer Science 2021-08-06 Guolei Sun , Yun Liu , Jingyun Liang , Luc Van Gool

In the realm of 3D-computer vision applications, point cloud few-shot learning plays a critical role. However, it poses an arduous challenge due to the sparsity, irregularity, and unordered nature of the data. Current methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Tejas Anvekar , Dena Bazazian

Recent CLIP-based few-shot semantic segmentation methods introduce class-level textual priors to assist segmentation by typically using a single prompt (e.g., a photo of class). However, these approaches often result in incomplete…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Qiang Jiao , Bin Yan , Yi Yang , Mengrui Shi , Qiang Zhang

We present a self-supervised task on point clouds, in order to learn meaningful point-wise features that encode local structure around each point. Our self-supervised network, named MortonNet, operates directly on unstructured/unordered…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Ali Thabet , Humam Alwassel , Bernard Ghanem

Few shot segmentation (FSS) aims to learn pixel-level classification of a target object in a query image using only a few annotated support samples. This is challenging as it requires modeling appearance variations of target objects and the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Soopil Kim , Philip Chikontwe , Sang Hyun Park

Few-shot segmentation has garnered significant attention. Many recent approaches attempt to introduce the Segment Anything Model (SAM) to handle this task. With the strong generalization ability and rich object-specific extraction ability…

Computer Vision and Pattern Recognition · Computer Science 2025-11-20 Jin Wang , Bingfeng Zhang , Jian Pang , Weifeng Liu , Baodi Liu , Honglong Chen

Recent success of vision foundation models have shown promising performance for the 2D perception tasks. However, it is difficult to train a 3D foundation network directly due to the limited dataset and it remains under explored whether…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Qingdong He , Jinlong Peng , Zhengkai Jiang , Xiaobin Hu , Jiangning Zhang