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Weakly supervised point cloud semantic segmentation methods that require 1\% or fewer labels, hoping to realize almost the same performance as fully supervised approaches, which recently, have attracted extensive research attention. A…

计算机视觉与模式识别 · 计算机科学 2022-09-19 Tianfang Sun , Zhizhong Zhang , Xin Tan , Yanyun Qu , Yuan Xie , Lizhuang Ma

Continual learning (CL) aims to learn a sequence of tasks without forgetting the previously acquired knowledge. However, recent CL advances are restricted to supervised continual learning (SCL) scenarios. Consequently, they are not scalable…

机器学习 · 计算机科学 2022-04-06 Divyam Madaan , Jaehong Yoon , Yuanchun Li , Yunxin Liu , Sung Ju Hwang

We present Consistent Assignment of Views over Random Partitions (CARP), a self-supervised clustering method for representation learning of visual features. CARP learns prototypes in an end-to-end online fashion using gradient descent…

计算机视觉与模式识别 · 计算机科学 2023-10-30 Thalles Silva , Adín Ramírez Rivera

Contrastive learning has emerged as a promising paradigm for 3D open-world understanding, i.e., aligning point cloud representation to image and text embedding space individually. In this paper, we introduce MixCon3D, a simple yet effective…

计算机视觉与模式识别 · 计算机科学 2024-04-08 Yipeng Gao , Zeyu Wang , Wei-Shi Zheng , Cihang Xie , Yuyin Zhou

The manual annotation for large-scale point clouds costs a lot of time and is usually unavailable in harsh real-world scenarios. Inspired by the great success of the pre-training and fine-tuning paradigm in both vision and language tasks,…

计算机视觉与模式识别 · 计算机科学 2022-09-26 Chao Sun , Zhedong Zheng , Xiaohan Wang , Mingliang Xu , Yi Yang

The scale diversity of point cloud data presents significant challenges in developing unified representation learning techniques for 3D vision. Currently, there are few unified 3D models, and no existing pre-training method is equally…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Ziyi Wang , Yanran Zhang , Jie Zhou , Jiwen Lu

Pretraining on large labeled datasets is a prerequisite to achieve good performance in many computer vision tasks like 2D object recognition, video classification etc. However, pretraining is not widely used for 3D recognition tasks where…

计算机视觉与模式识别 · 计算机科学 2021-01-08 Zaiwei Zhang , Rohit Girdhar , Armand Joulin , Ishan Misra

Recently, large-scale pre-trained vision-language models (e.g. CLIP and ALIGN) have demonstrated remarkable effectiveness in acquiring transferable visual representations. To leverage the valuable knowledge encoded within these models for…

计算机视觉与模式识别 · 计算机科学 2023-08-28 Yi Zhang , Ce Zhang , Xueting Hu , Zhihai He

Reducing the quantity of annotations required for supervised training is vital when labels are scarce and costly. This reduction is especially important for semantic segmentation tasks involving 3D datasets that are often significantly…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Andrej Janda , Brandon Wagstaff , Edwin G. Ng , Jonathan Kelly

Diffusion-based video generation techniques have significantly improved zero-shot talking-head avatar generation, enhancing the naturalness of both head motion and facial expressions. However, existing methods suffer from poor…

图形学 · 计算机科学 2025-04-24 Lingzhou Mu , Baiji Liu , Ruonan Zhang , Guiming Mo , Jiawei Jin , Kai Zhang , Haozhi Huang

Contrastive vision-language models, such as CLIP, have garnered considerable attention for various downstream tasks, mainly due to the remarkable ability of the learned features for generalization. However, the features they learned often…

计算机视觉与模式识别 · 计算机科学 2025-04-24 Yichao Cai , Yuhang Liu , Zhen Zhang , Javen Qinfeng Shi

Learning to build 3D scene graphs is essential for real-world perception in a structured and rich fashion. However, previous 3D scene graph generation methods utilize a fully supervised learning manner and require a large amount of…

计算机视觉与模式识别 · 计算机科学 2024-04-04 Xu Wang , Yifan Li , Qiudan Zhang , Wenhui Wu , Mark Junjie Li , Jianmin Jinag

We propose a unified point cloud video self-supervised learning framework for object-centric and scene-centric data. Previous methods commonly conduct representation learning at the clip or frame level and cannot well capture fine-grained…

计算机视觉与模式识别 · 计算机科学 2023-08-21 Xiaoxiao Sheng , Zhiqiang Shen , Gang Xiao , Longguang Wang , Yulan Guo , Hehe Fan

Foundation models have recently gained tremendous popularity in medical image analysis. State-of-the-art methods leverage either paired image-text data via vision-language pre-training or unpaired image data via self-supervised pre-training…

计算机视觉与模式识别 · 计算机科学 2025-07-24 Lei Zhu , Jun Zhou , Rick Siow Mong Goh , Yong Liu

This paper presents a collaborative implicit neural simultaneous localization and mapping (SLAM) system with RGB-D image sequences, which consists of complete front-end and back-end modules including odometry, loop detection, sub-map…

计算机视觉与模式识别 · 计算机科学 2023-11-15 Jiarui Hu , Mao Mao , Hujun Bao , Guofeng Zhang , Zhaopeng Cui

Rapid progress in 3D semantic segmentation is inseparable from the advances of deep network models, which highly rely on large-scale annotated data for training. To address the high cost and challenges of 3D point-level labeling, we present…

计算机视觉与模式识别 · 计算机科学 2021-10-18 Li Jiang , Shaoshuai Shi , Zhuotao Tian , Xin Lai , Shu Liu , Chi-Wing Fu , Jiaya Jia

Contrastive language-audio pretraining (CLAP) has achieved notable success in learning semantically rich audio representations and is widely adopted for various audio-related tasks. However, current CLAP models face several key limitations.…

音频与语音处理 · 电气工程与系统科学 2026-01-21 Xinhao Mei , Gael Le Lan , Haohe Liu , Zhaoheng Ni , Varun Nagaraja , Yang Liu , Yangyang Shi , Vikas Chandra

Recent advancements in deep generative models, particularly with the application of CLIP (Contrastive Language Image Pretraining) to Denoising Diffusion Probabilistic Models (DDPMs), have demonstrated remarkable effectiveness in text to…

计算机视觉与模式识别 · 计算机科学 2024-02-05 Cristian Sbrolli , Paolo Cudrano , Matteo Matteucci

Contrastive language-audio pre-training (CLAP) enables zero-shot (ZS) inference of audio and exhibits promising performance in several classification tasks. However, conventional audio representations are still crucial for many tasks where…

音频与语音处理 · 电气工程与系统科学 2024-06-05 Daisuke Niizumi , Daiki Takeuchi , Yasunori Ohishi , Noboru Harada , Masahiro Yasuda , Shunsuke Tsubaki , Keisuke Imoto

3D Shape represented as point cloud has achieve advancements in multimodal pre-training to align image and language descriptions, which is curial to object identification, classification, and retrieval. However, the discrete representations…

计算机视觉与模式识别 · 计算机科学 2024-02-14 Haoyuan Li , Yanpeng Zhou , Yihan Zeng , Hang Xu , Xiaodan Liang