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3D deep learning is a growing field of interest due to the vast amount of information stored in 3D formats. Triangular meshes are an efficient representation for irregular, non-uniform 3D objects. However, meshes are often challenging to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Ayaan Haque , Hankyu Moon , Heng Hao , Sima Didari , Jae Oh Woo , Patrick Bangert

State-of-the-art frameworks in self-supervised learning have recently shown that fully utilizing transformer-based models can lead to performance boost compared to conventional CNN models. Striving to maximize the mutual information of two…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Jiho Jang , Seonhoon Kim , Kiyoon Yoo , Chaerin Kong , Jangho Kim , Nojun Kwak

In this paper, we revisit multimodal few-shot 3D point cloud semantic segmentation (FS-PCS), identifying a conflict in "Fuse-then-Refine" paradigms: the "Plasticity-Stability Dilemma." In addition, CLIP's inter-class confusion can result in…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Wentao Bian , Fenglei Xu

Self-supervised learning (SSL) has transformed representation learning for large models, yet remains unexplored for microcontroller (MCU)-class models with fewer than 500K parameters. We identify three obstacles at this scale -- projection…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Bibin Wilson

Unlike popular solutions based on dense feature maps, Object-Centric Learning (OCL) represents visual scenes as sub-symbolic object-level feature vectors, termed slots, which are highly versatile for tasks involving visual modalities. OCL…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Rongzhen Zhao , Yi Zhao , Juho Kannala , Joni Pajarinen

Deep learning has achieved remarkable progress for visual recognition on large-scale balanced datasets but still performs poorly on real-world long-tailed data. Previous methods often adopt class re-balanced training strategies to…

Computer Vision and Pattern Recognition · Computer Science 2021-09-10 Tianhao Li , Limin Wang , Gangshan Wu

Since the preparation of labeled data for training semantic segmentation networks of point clouds is a time-consuming process, weakly supervised approaches have been introduced to learn from only a small fraction of data. These methods are…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Gengxin Liu , Oliver van Kaick , Hui Huang , Ruizhen Hu

Annotating large-scale LiDAR point clouds for 3D semantic segmentation is costly and time-consuming, which motivates the use of semi-supervised learning (SemiSL). Standard LiDAR SemiSL methods typically adopt a two-step training paradigm,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Bin Yang , Alexandru Paul Condurache

Deep metric learning aims to learn a deep embedding that can capture the semantic similarity of data points. Given the availability of massive training samples, deep metric learning is known to suffer from slow convergence due to a large…

Machine Learning · Computer Science 2019-12-05 Xinshao Wang , Yang Hua , Elyor Kodirov , Guosheng Hu , Neil M. Robertson

Despite recent advancements in deep neural networks for point cloud recognition, real-world safety-critical applications present challenges due to unavoidable data corruption. Current models often fall short in generalizing to unforeseen…

Computer Vision and Pattern Recognition · Computer Science 2023-10-06 Zhuoyuan Wu , Jiachen Sun , Chaowei Xiao

Recent self-supervised learning (SSL) methods have shown impressive results in learning visual representations from unlabeled images. This paper aims to improve their performance further by utilizing the architectural advantages of the…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Sukmin Yun , Hankook Lee , Jaehyung Kim , Jinwoo Shin

Being able to learn dense semantic representations of images without supervision is an important problem in computer vision. However, despite its significance, this problem remains rather unexplored, with a few exceptions that considered…

Computer Vision and Pattern Recognition · Computer Science 2021-08-04 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Luc Van Gool

Semantic IDs serve as a key component in generative recommendation systems. They not only incorporate open-world knowledge from large language models (LLMs) but also compress the semantic space to reduce generation difficulty. However,…

Information Retrieval · Computer Science 2026-02-05 Junwei Yin , Senjie Kou , Changhao Li , Shuli Wang , Xue Wei , Yinqiu Huang , Yinhua Zhu , Haitao Wang , Xingxing Wang

Semi-Supervised Learning (SSL) seeks to leverage large amounts of non-annotated data along with the smallest amount possible of annotated data in order to achieve the same level of performance as if all data were annotated. A fruitful…

Machine Learning · Computer Science 2024-05-24 Nikolaos Karaliolios , Hervé Le Borgne , Florian Chabot

Score distillation sampling (SDS) has proven to be an important tool, enabling the use of large-scale diffusion priors for tasks operating in data-poor domains. Unfortunately, SDS has a number of characteristic artifacts that limit its…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 David McAllister , Songwei Ge , Jia-Bin Huang , David W. Jacobs , Alexei A. Efros , Aleksander Holynski , Angjoo Kanazawa

This work investigates learning pixel-wise semantic image segmentation in urban scenes without any manual annotation, just from the raw non-curated data collected by cars which, equipped with cameras and LiDAR sensors, drive around a city.…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Antonin Vobecky , David Hurych , Oriane Siméoni , Spyros Gidaris , Andrei Bursuc , Patrick Pérez , Josef Sivic

We address the problem of unsupervised semantic segmentation of outdoor LiDAR point clouds in diverse traffic scenarios. The key idea is to leverage the spatiotemporal nature of a dynamic point cloud sequence and introduce drastically…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Xiao Li , Pan He , Aotian Wu , Sanjay Ranka , Anand Rangarajan

Point-level Supervised Instance Segmentation (PSIS) aims to enhance the applicability and scalability of instance segmentation by utilizing low-cost yet instance-informative annotations. Existing PSIS methods usually rely on positional…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Zipeng Wang , Xuehui Yu , Xumeng Han , Wenwen Yu , Zhixun Huang , Jianbin Jiao , Zhenjun Han

Unsupervised domain adaptation (UDA) for semantic segmentation aims to adapt a segmentation model trained on the labeled source domain to the unlabeled target domain. Existing methods try to learn domain invariant features while suffering…

Computer Vision and Pattern Recognition · Computer Science 2021-07-28 Li Gao , Jing Zhang , Lefei Zhang , Dacheng Tao

Object-centric understanding is fundamental to human vision and required for complex reasoning. Traditional methods define slot-based bottlenecks to learn object properties explicitly, while recent self-supervised vision models like DINO…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Stefan Sylvius Wagner , Stefan Harmeling