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Estimation of differential geometric quantities in discrete 3D data representations is one of the crucial steps in the geometry processing pipeline. Specifically, estimating normals and sharp feature lines from raw point cloud helps improve…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Albert Matveev , Alexey Artemov , Denis Zorin , Evgeny Burnaev

Attention mechanisms represent a fundamental paradigm shift in neural network architectures, enabling models to selectively focus on relevant portions of input sequences through learned weighting functions. This monograph provides a…

Machine Learning · Computer Science 2026-01-08 Hasi Hays

Recent work has shown that self-attention can serve as a basic building block for image recognition models. We explore variations of self-attention and assess their effectiveness for image recognition. We consider two forms of…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Hengshuang Zhao , Jiaya Jia , Vladlen Koltun

In this paper, we propose one novel model for point cloud semantic segmentation, which exploits both the local and global structures within the point cloud based on the contextual point representations. Specifically, we enrich each point…

Computer Vision and Pattern Recognition · Computer Science 2019-11-14 Xu Wang , Jingming He , Lin Ma

Modeling attention in neural multi-source sequence-to-sequence learning remains a relatively unexplored area, despite its usefulness in tasks that incorporate multiple source languages or modalities. We propose two novel approaches to…

Computation and Language · Computer Science 2017-04-24 Jindřich Libovický , Jindřich Helcl

Transformers and large language models (LLMs) have revolutionized machine learning, with attention mechanisms at the core of their success. As the landscape of attention variants expands, so too do the challenges of optimizing their…

Computation and Language · Computer Science 2025-02-24 Feiyang Chen , Yu Cheng , Lei Wang , Yuqing Xia , Ziming Miao , Lingxiao Ma , Fan Yang , Jilong Xue , Zhi Yang , Mao Yang , Haibo Chen

Features that are equivariant to a larger group of symmetries have been shown to be more discriminative and powerful in recent studies. However, higher-order equivariant features often come with an exponentially-growing computational cost.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Haiwei Chen , Shichen Liu , Weikai Chen , Hao Li

We propose an end-to-end-trainable attention module for convolutional neural network (CNN) architectures built for image classification. The module takes as input the 2D feature vector maps which form the intermediate representations of the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Saumya Jetley , Nicholas A. Lord , Namhoon Lee , Philip H. S. Torr

While transformers have greatly boosted performance in semantic segmentation, domain adaptive transformers are not yet well explored. We identify that the domain gap can cause discrepancies in self-attention. Due to this gap, the…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Kaihong Wang , Donghyun Kim , Rogerio Feris , Kate Saenko , Margrit Betke

Point cloud analysis is the cornerstone of many downstream tasks, among which aggregating local structures is the basis for understanding point cloud data. While numerous works aggregate neighbor using three-dimensional relative…

Computer Vision and Pattern Recognition · Computer Science 2025-06-19 Jiaqi Shi , Jin Xiao , Xiaoguang Hu , Boyang Song , Hao Jiang , Tianyou Chen , Baochang Zhang

The application of deep learning to 3D point clouds is challenging due to its lack of order. Inspired by the point embeddings of PointNet and the edge embeddings of DGCNNs, we propose three improvements to the task of point cloud analysis.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Chaitanya Kaul , Nick Pears , Suresh Manandhar

Feature fusion, the combination of features from different layers or branches, is an omnipresent part of modern network architectures. It is often implemented via simple operations, such as summation or concatenation, but this might not be…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Yimian Dai , Fabian Gieseke , Stefan Oehmcke , Yiquan Wu , Kobus Barnard

6D pose estimation refers to object recognition and estimation of 3D rotation and 3D translation. The key technology for estimating 6D pose is to estimate pose by extracting enough features to find pose in any environment. Previous methods…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Myoungha Song , Jeongho Lee , Donghwan Kim

Deep classifiers tend to associate a few discriminative input variables with their objective function, which in turn, may hurt their generalization capabilities. To address this, one can design systematic experiments and/or inspect the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-10 Saeid Asgari Taghanaki , Kaveh Hassani , Pradeep Kumar Jayaraman , Amir Hosein Khasahmadi , Tonya Custis

In the field of multimodal segmentation, the correlation between different modalities can be considered for improving the segmentation results. Considering the correlation between different MR modalities, in this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Tongxue Zhou , Su Ruan , Pierre Vera , Stéphane Canu

The self-attention mechanism has been a key factor in the advancement of vision Transformers. However, its quadratic complexity imposes a heavy computational burden in high-resolution scenarios, restricting the practical application.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Dongchen Han , Tianyu Li , Ziyi Wang , Gao Huang

In this paper, we propose a deep hierarchical attention context model for lossless attribute compression of point clouds, leveraging a multi-resolution spatial structure and residual learning. A simple and effective Level of Detail (LoD)…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Yueru Chen , Wei Zhang , Dingquan Li , Jing Wang , Ge Li

Social group activity recognition is a challenging task extended from group activity recognition, where social groups must be recognized with their activities and group members. Existing methods tackle this task by leveraging region…

Computer Vision and Pattern Recognition · Computer Science 2024-04-16 Masato Tamura

Point clouds provide a compact and efficient representation of 3D shapes. While deep neural networks have achieved impressive results on point cloud learning tasks, they require massive amounts of manually labeled data, which can be costly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Omid Poursaeed , Tianxing Jiang , Han Qiao , Nayun Xu , Vladimir G. Kim

This work presents a new multimodal system for remote attention level estimation based on multimodal face analysis. Our multimodal approach uses different parameters and signals obtained from the behavior and physiological processes that…

Computer Vision and Pattern Recognition · Computer Science 2023-01-24 Roberto Daza , Luis F. Gomez , Aythami Morales , Julian Fierrez , Ruben Tolosana , Ruth Cobos , Javier Ortega-Garcia