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Self-supervised learning has emerged as a prominent research direction in point cloud processing. While existing models predominantly concentrate on reconstruction tasks at higher encoder layers, they often neglect the effective utilization…

Graphics · Computer Science 2025-07-08 Xin Cao , Haoyu Wang , Yuzhu Mao , Xinda Liu , Linzhi Su , Kang Li

Convolution exploits locality for efficiency at a cost of missing long range context. Self-attention has been adopted to augment CNNs with non-local interactions. Recent works prove it possible to stack self-attention layers to obtain a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-10 Huiyu Wang , Yukun Zhu , Bradley Green , Hartwig Adam , Alan Yuille , Liang-Chieh Chen

The attention mechanism has gained significant recognition in the field of computer vision due to its ability to effectively enhance the performance of deep neural networks. However, existing methods often struggle to effectively utilize…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Wei Xu , Yi Wan

Large language models (LLMs) with billions of parameters demonstrate impressive performance. However, the widely used Multi-Head Attention (MHA) in LLMs incurs substantial computational and memory costs during inference. While some efforts…

Machine Learning · Computer Science 2024-12-10 Yilong Chen , Linhao Zhang , Junyuan Shang , Zhenyu Zhang , Tingwen Liu , Shuohuan Wang , Yu Sun

Dense visual prediction tasks, such as detection and segmentation, are crucial for time-critical applications (e.g., autonomous driving and video surveillance). While deep models achieve strong performance, their efficiency remains a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Qizhen Lan , Qing Tian

Non-local attention module has been proven to be crucial for image restoration. Conventional non-local attention processes features of each layer separately, so it risks missing correlation between features among different layers. To…

Image and Video Processing · Electrical Eng. & Systems 2023-04-21 Yancheng Wang , Ning Xu , Yingzhen Yang

Attention mechanism has recently attracted increasing attentions in the field of facial action unit (AU) detection. By finding the region of interest of each AU with the attention mechanism, AU-related local features can be captured. Most…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Zhiwen Shao , Zhilei Liu , Jianfei Cai , Yunsheng Wu , Lizhuang Ma

We introduce the notion of point affiliation into feature upsampling. By abstracting a feature map into non-overlapped semantic clusters formed by points of identical semantic meaning, feature upsampling can be viewed as point affiliation…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Wenze Liu , Hao Lu , Yuliang Liu , Zhiguo Cao

Recently, Transformer-based architecture has been introduced into single image deraining task due to its advantage in modeling non-local information. However, existing approaches tend to integrate global features based on a dense…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Zhentao Fan , Hongming Chen , Yufeng Li

Recently, self-attention (SA) structures became popular in computer vision fields. They have locally independent filters and can use large kernels, which contradicts the previously popular convolutional neural networks (CNNs). CNNs success…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Nana Arizumi

Facial action unit (AU) detection and face alignment are two highly correlated tasks, since facial landmarks can provide precise AU locations to facilitate the extraction of meaningful local features for AU detection. However, most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-09-25 Zhiwen Shao , Zhilei Liu , Jianfei Cai , Lizhuang Ma

Current parameter-efficient fine-tuning (PEFT) methods build adapters widely agnostic of the context of downstream task to learn, or the context of important knowledge to maintain. As a result, there is often a performance gap compared to…

Machine Learning · Computer Science 2025-03-11 Yibo Yang , Xiaojie Li , Zhongzhu Zhou , Shuaiwen Leon Song , Jianlong Wu , Liqiang Nie , Bernard Ghanem

In computer-aided design (CAD) community, the point cloud data is pervasively applied in reverse engineering, where the point cloud analysis plays an important role. While a large number of supervised learning methods have been proposed to…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Cheng Zhang , Jian Shi , Xuan Deng , Zizhao Wu

Image Quality Assessment (IQA) constitutes a fundamental task within the field of computer vision, yet it remains an unresolved challenge, owing to the intricate distortion conditions, diverse image contents, and limited availability of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Kangmin Xu , Liang Liao , Jing Xiao , Chaofeng Chen , Haoning Wu , Qiong Yan , Weisi Lin

Self-attention is powerful in modeling long-range dependencies, but it is weak in local finer-level feature learning. The performance of local self-attention (LSA) is just on par with convolution and inferior to dynamic filters, which…

Computer Vision and Pattern Recognition · Computer Science 2021-12-24 Jingkai Zhou , Pichao Wang , Fan Wang , Qiong Liu , Hao Li , Rong Jin

Recently, research using point clouds has been increasing with the development of 3D scanner technology. According to this trend, the demand for high-quality point clouds is increasing, but there is still a problem with the high cost of…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Hyungjun Lee , Sejoon Lim

In this paper, we propose a new operator, called 3D DeFormable Attention (DFA3D), for 2D-to-3D feature lifting, which transforms multi-view 2D image features into a unified 3D space for 3D object detection. Existing feature lifting…

Computer Vision and Pattern Recognition · Computer Science 2023-07-25 Hongyang Li , Hao Zhang , Zhaoyang Zeng , Shilong Liu , Feng Li , Tianhe Ren , Lei Zhang

The capability of the self-attention mechanism to model the long-range dependencies has catapulted its deployment in vision models. Unlike convolution operators, self-attention offers infinite receptive field and enables compute-efficient…

Computer Vision and Pattern Recognition · Computer Science 2020-06-29 Rajat Saini , Nandan Kumar Jha , Bedanta Das , Sparsh Mittal , C. Krishna Mohan

Objects in aerial images have greater variations in scale and orientation than in typical images, so detection is more difficult. Convolutional neural networks use a variety of frequency- and orientation-specific kernels to identify objects…

Computer Vision and Pattern Recognition · Computer Science 2021-11-08 Guo-Ye Yang , Xiang-Li Li , Ralph R. Martin , Shi-Min Hu

The task of point cloud upsampling aims to acquire dense and uniform point sets from sparse and irregular point sets. Although significant progress has been made with deep learning models, state-of-the-art methods require ground-truth dense…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Xinhai Liu , Xinchen Liu , Yu-Shen Liu , Zhizhong Han