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The automatic creation of geometric models from point clouds has numerous applications in CAD (e.g., reverse engineering, manufacturing, assembling) and, more in general, in shape modelling and processing. Given a segmented point cloud…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Andrea Raffo , Chiara Romanengo , Bianca Falcidieno , Silvia Biasotti

Despite the tremendous success of deep neural networks in medical image segmentation, they typically require a large amount of costly, expert-level annotated data. Few-shot segmentation approaches address this issue by learning to transfer…

计算机视觉与模式识别 · 计算机科学 2021-03-19 Qinji Yu , Kang Dang , Nima Tajbakhsh , Demetri Terzopoulos , Xiaowei Ding

Prompt learning is a new learning paradigm which reformulates downstream tasks as similar pretraining tasks on pretrained models by leveraging textual prompts. Recent works have demonstrated that prompt learning is particularly useful for…

计算与语言 · 计算机科学 2022-10-21 Yue Zhang , Hongliang Fei , Dingcheng Li , Tan Yu , Ping Li

Cross-Domain Few-Shot Semantic Segmentation (CD-FSS) seeks to segment unknown classes in unseen domains using only a few annotated examples. This setting is inherently challenging: source and target domains exhibit substantial distribution…

计算机视觉与模式识别 · 计算机科学 2025-12-08 Pasquale De Marinis , Pieter M. Blok , Uzay Kaymak , Rogier Brussee , Gennaro Vessio , Giovanna Castellano

Few-shot learning aims to generalize unseen classes that appear during testing but are unavailable during training. Prototypical networks incorporate few-shot metric learning, by constructing a class prototype in the form of a mean vector…

声音 · 计算机科学 2021-02-17 Swapnil Bhosale , Rupayan Chakraborty , Sunil Kumar Kopparapu

Few-shot segmentation aims to train a segmentation model that can fast adapt to novel classes with few exemplars. The conventional training paradigm is to learn to make predictions on query images conditioned on the features from support…

计算机视觉与模式识别 · 计算机科学 2022-03-09 Gengwei Zhang , Guoliang Kang , Yi Yang , Yunchao Wei

Conventional 3D medical image segmentation methods typically require learning heavy 3D networks (e.g., 3D-UNet), as well as large amounts of in-domain data with accurate pixel/voxel-level labels to avoid overfitting. These solutions are…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Meng Zheng , Benjamin Planche , Zhongpai Gao , Terrence Chen , Richard J. Radke , Ziyan Wu

In-context learning of GPT-like models has been recognized as fragile across different hand-crafted templates, and demonstration permutations. In this work, we propose prototypical calibration to adaptively learn a more robust decision…

计算与语言 · 计算机科学 2022-10-06 Zhixiong Han , Yaru Hao , Li Dong , Yutao Sun , Furu Wei

Semantic segmentation of 3D point cloud data is essential for enhanced high-level perception in autonomous platforms. Furthermore, given the increasing deployment of LiDAR sensors onboard of cars and drones, a special emphasis is also…

计算机视觉与模式识别 · 计算机科学 2020-11-09 Yara Ali Alnaggar , Mohamed Afifi , Karim Amer , Mohamed Elhelw

The purpose of few-shot recognition is to recognize novel categories with a limited number of labeled examples in each class. To encourage learning from a supplementary view, recent approaches have introduced auxiliary semantic modalities…

计算机视觉与模式识别 · 计算机科学 2021-02-04 Siteng Huang , Min Zhang , Yachen Kang , Donglin Wang

We propose prototypical networks for the problem of few-shot classification, where a classifier must generalize to new classes not seen in the training set, given only a small number of examples of each new class. Prototypical networks…

机器学习 · 计算机科学 2017-06-21 Jake Snell , Kevin Swersky , Richard S. Zemel

Few-Shot Segmentation (FSS) aims to learn class-agnostic segmentation on few classes to segment arbitrary classes, but at the risk of overfitting. To address this, some methods use the well-learned knowledge of foundation models (e.g., SAM)…

计算机视觉与模式识别 · 计算机科学 2025-05-22 Qianxiong Xu , Lanyun Zhu , Xuanyi Liu , Guosheng Lin , Cheng Long , Ziyue Li , Rui Zhao

Distance-based classification is frequently used in transductive few-shot learning (FSL). However, due to the high-dimensionality of image representations, FSL classifiers are prone to suffer from the hubness problem, where a few points…

计算机视觉与模式识别 · 计算机科学 2023-03-17 Daniel J. Trosten , Rwiddhi Chakraborty , Sigurd Løkse , Kristoffer Knutsen Wickstrøm , Robert Jenssen , Michael C. Kampffmeyer

Weakly supervised semantic segmentation (WSSS) in histopathology reduces pixel-level labeling by learning from image-level labels, but it is hindered by inter-class homogeneity, intra-class heterogeneity, and CAM-induced region shrinkage…

计算机视觉与模式识别 · 计算机科学 2025-12-08 Khang Le , Anh Mai Vu , Thi Kim Trang Vo , Ha Thach , Ngoc Bui Lam Quang , Thanh-Huy Nguyen , Minh H. N. Le , Zhu Han , Chandra Mohan , Hien Van Nguyen

To reduce the reliance on large-scale datasets, recent works in 3D segmentation resort to few-shot learning. Current 3D few-shot semantic segmentation methods first pre-train the models on `seen' classes, and then evaluate their…

计算机视觉与模式识别 · 计算机科学 2023-08-25 Xiangyang Zhu , Renrui Zhang , Bowei He , Ziyu Guo , Jiaming Liu , Hao Dong , Peng Gao

3D point cloud semantic segmentation has a wide range of applications. Recently, weakly supervised point cloud segmentation methods have been proposed, aiming to alleviate the expensive and laborious manual annotation process by leveraging…

计算机视觉与模式识别 · 计算机科学 2024-01-01 Xiawei Li , Qingyuan Xu , Jing Zhang , Tianyi Zhang , Qian Yu , Lu Sheng , Dong Xu

Learning to generate a task-aware base learner proves a promising direction to deal with few-shot learning (FSL) problem. Existing methods mainly focus on generating an embedding model utilized with a fixed metric (eg, cosine distance) for…

计算机视觉与模式识别 · 计算机科学 2020-12-04 Lei Zhang , Fei Zhou , Wei Wei , Yanning Zhang

Whilst the availability of 3D LiDAR point cloud data has significantly grown in recent years, annotation remains expensive and time-consuming, leading to a demand for semi-supervised semantic segmentation methods with application domains…

计算机视觉与模式识别 · 计算机科学 2023-03-29 Li Li , Hubert P. H. Shum , Toby P. Breckon

In semantic segmentation, generalizing a visual system to both seen categories and novel categories at inference time has always been practically valuable yet challenging. To enable such functionality, existing methods mainly rely on either…

计算机视觉与模式识别 · 计算机科学 2024-07-12 Yuhuan Yang , Chaofan Ma , Chen Ju , Fei Zhang , Jiangchao Yao , Ya Zhang , Yanfeng Wang

The performance of supervised semantic segmentation methods highly relies on the availability of large-scale training data. To alleviate this dependence, few-shot semantic segmentation (FSS) is introduced to leverage the model trained on…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Xinyue Chen , Miaojing Shi