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Real-world sensors often produce incomplete, irregular, and noisy point clouds, making point cloud completion increasingly important. However, most existing completion methods rely on large paired datasets for training, which is…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Zhaoxin Fan , Yulin He , Zhicheng Wang , Kejian Wu , Hongyan Liu , Jun He

Deep learning methods show promising results for overlapping cervical cell instance segmentation. However, in order to train a model with good generalization ability, voluminous pixel-level annotations are demanded which is quite expensive…

Computer Vision and Pattern Recognition · Computer Science 2020-07-22 Yanning Zhou , Hao Chen , Huangjing Lin , Pheng-Ann Heng

This paper presents a novel approach, called Prototype-based Self-Distillation (ProS), for unsupervised face representation learning. The existing supervised methods heavily rely on a large amount of annotated training facial data, which…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Xing Di , Yiyu Zheng , Xiaoming Liu , Yu Cheng

Recently, great progress has been made in 3D deep learning with the emergence of deep neural networks specifically designed for 3D point clouds. These networks are often trained from scratch or from pre-trained models learned purely from…

Computer Vision and Pattern Recognition · Computer Science 2022-10-31 Bach Tran , Binh-Son Hua , Anh Tuan Tran , Minh Hoai

Pre-training a large transformer model on a massive amount of unlabeled data and fine-tuning it on labeled datasets for diverse downstream tasks has proven to be a successful strategy, for a variety of vision and natural language processing…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Seanie Lee , Minki Kang , Juho Lee , Sung Ju Hwang , Kenji Kawaguchi

Recent advances in automotive four-dimensional (4D) Radar have enabled access to raw 4D Radar Tensor (4DRT), offering richer spatial and Doppler information than conventional point clouds. While most existing methods rely on heavily…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Seung-Hyun Song , Dong-Hee Paek , Minh-Quan Dao , Ezio Malis , Seung-Hyun Kong

Traditionally, distillation has been used to train a student model to emulate the input/output functionality of a teacher. A more useful goal than emulation, yet under-explored, is for the student to learn feature representations that…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Zhizhong Li , Avinash Ravichandran , Charless Fowlkes , Marzia Polito , Rahul Bhotika , Stefano Soatto

Video recognition models have progressed significantly over the past few years, evolving from shallow classifiers trained on hand-crafted features to deep spatiotemporal networks. However, labeled video data required to train such models…

Computer Vision and Pattern Recognition · Computer Science 2019-08-21 Rohit Girdhar , Du Tran , Lorenzo Torresani , Deva Ramanan

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 the context of label-efficient learning on video data, the distillation method and the structural design of the teacher-student architecture have a significant impact on knowledge distillation. However, the relationship between these…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Chao Wang , Zheng Tang

Invariance against rotations of 3D objects is an important property in analyzing 3D point set data. Conventional 3D point set DNNs having rotation invariance typically obtain accurate 3D shape features via supervised learning by using…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Takahiko Furuya , Zhoujie Chen , Ryutarou Ohbuchi , Zhenzhong Kuang

Video representation learning is a vital problem for classification task. Recently, a promising unsupervised paradigm termed self-supervised learning has emerged, which explores inherent supervisory signals implied in massive data for…

Computer Vision and Pattern Recognition · Computer Science 2018-04-27 Chenrui Zhang , Yuxin Peng

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

Recently, research efforts have been concentrated on revealing how pre-trained model makes a difference in neural network performance. Self-supervision and semi-supervised learning technologies have been extensively explored by the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Cheng Cui , Ruoyu Guo , Yuning Du , Dongliang He , Fu Li , Zewu Wu , Qiwen Liu , Shilei Wen , Jizhou Huang , Xiaoguang Hu , Dianhai Yu , Errui Ding , Yanjun Ma

To date, various 3D scene understanding tasks still lack practical and generalizable pre-trained models, primarily due to the intricate nature of 3D scene understanding tasks and their immense variations introduced by camera views,…

Computer Vision and Pattern Recognition · Computer Science 2021-09-02 Siyuan Huang , Yichen Xie , Song-Chun Zhu , Yixin Zhu

A promising direction for pre-training 3D point clouds is to leverage the massive amount of data in 2D, whereas the domain gap between 2D and 3D creates a fundamental challenge. This paper proposes a novel approach to point-cloud…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Siming Yan , Chen Song , Youkang Kong , Qixing Huang

Segmenting or detecting objects in sparse Lidar point clouds are two important tasks in autonomous driving to allow a vehicle to act safely in its 3D environment. The best performing methods in 3D semantic segmentation or object detection…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Corentin Sautier , Gilles Puy , Spyros Gidaris , Alexandre Boulch , Andrei Bursuc , Renaud Marlet

Convolutional Neural Networks (CNNs) are prone to overfit small training datasets. We present a novel two-phase pipeline that leverages self-supervised learning and knowledge distillation to improve the generalization ability of CNN models…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Bingchen Zhao , Xin Wen

Very low-resolution face recognition is challenging due to the serious loss of informative facial details in resolution degradation. In this paper, we propose a generative-discriminative representation distillation approach that combines…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Junzheng Zhang , Weijia Guo , Bochao Liu , Ruixin Shi , Yong Li , Shiming Ge

This article addresses the problem of distilling knowledge from a large teacher model to a slim student network for LiDAR semantic segmentation. Directly employing previous distillation approaches yields inferior results due to the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Yuenan Hou , Xinge Zhu , Yuexin Ma , Chen Change Loy , Yikang Li