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We propose a new residual block for convolutional neural networks and demonstrate its state-of-the-art performance in medical image segmentation. We combine attention mechanisms with group convolutions to create our group attention…

Image and Video Processing · Electrical Eng. & Systems 2021-04-09 Chaitanya Kaul , Nick Pears , Hang Dai , Roderick Murray-Smith , Suresh Manandhar

Segmentation of brain structures from magnetic resonance (MR) scans plays an important role in the quantification of brain morphology. Since 3D deep learning models suffer from high computational cost, 2D deep learning methods are favored…

Image and Video Processing · Electrical Eng. & Systems 2021-03-09 Yuemeng Li , Hongming Li , Yong Fan

Point clouds, being the simple and compact representation of surface geometry of 3D objects, have gained increasing popularity with the evolution of deep learning networks for classification and segmentation tasks. Unlike human, teaching…

Computer Vision and Pattern Recognition · Computer Science 2021-01-29 Sindhu Hegde , Shankar Gangisetty

This paper proposes a novel point-cloud-based place recognition system that adopts a deep learning approach for feature extraction. By using a convolutional neural network pre-trained on color images to extract features from a range image…

Computer Vision and Pattern Recognition · Computer Science 2018-10-24 Ting Sun , Ming Liu , Haoyang Ye , Dit-Yan Yeung

The analyses relying on 3D point clouds are an utterly complex task, often involving million of points, but also requiring computationally efficient algorithms because of many real-time applications; e.g. autonomous vehicle. However, point…

Computer Vision and Pattern Recognition · Computer Science 2019-06-11 Can Chen , Luca Zanotti Fragonara , Antonios Tsourdos

Segmenting highly-overlapping objects is challenging, because typically no distinction is made between real object contours and occlusion boundaries. Unlike previous two-stage instance segmentation methods, we model image formation as…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Lei Ke , Yu-Wing Tai , Chi-Keung Tang

In this paper, we propose Attention Based Decomposition Network (ABD-Net), for point cloud decomposition into basic geometric shapes namely, plane, sphere, cone and cylinder. We show improved performance of 3D object classification using…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Siddharth Katageri , Shashidhar V Kudari , Akshaykumar Gunari , Ramesh Ashok Tabib , Uma Mudenagudi

Point cloud segmentation and classification are some of the primary tasks in 3D computer vision with applications ranging from augmented reality to robotics. However, processing point clouds using deep learning-based algorithms is quite…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Aadesh Desai , Saagar Parikh , Seema Kumari , Shanmuganathan Raman

Point cloud analysis is an area of increasing interest due to the development of 3D sensors that are able to rapidly measure the depth of scenes accurately. Unfortunately, applying deep learning techniques to perform point cloud analysis is…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Junming Zhang , Ming-Yuan Yu , Ram Vasudevan , Matthew Johnson-Roberson

We present an end-to-end deep network for fine-grained visual categorization called Collaborative Convolutional Network (CoCoNet). The network uses a collaborative layer after the convolutional layers to represent an image as an optimal…

Computer Vision and Pattern Recognition · Computer Science 2020-11-11 Tapabrata Chakraborti , Brendan McCane , Steven Mills , Umapada Pal

As a fine-grained segmentation task, human parsing is still faced with two challenges: inter-part indistinction and intra-part inconsistency, due to the ambiguous definitions and confusing relationships between similar human parts. To…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Xinyan Zhang , Yunfeng Wang , Pengfei Xiong

Object detection and classification is one of the most important computer vision problems. Ever since the introduction of deep learning \cite{krizhevsky2012imagenet}, we have witnessed a dramatic increase in the accuracy of this object…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Gurjeet Singh , Sun Miao , Shi Shi , Patrick Chiang

Recently, deep convolutional neural network (CNN) have been widely used in image restoration and obtained great success. However, most of existing methods are limited to local receptive field and equal treatment of different types of…

Image and Video Processing · Electrical Eng. & Systems 2021-01-26 Yucheng Hang , Qingmin Liao , Wenming Yang , Yupeng Chen , Jie Zhou

Remotely captured images possess an immense scale and object appearance variability due to the complex scene. It becomes challenging to capture the underlying attributes in the global and local context for their segmentation. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Satyawant Kumar , Abhishek Kumar , Dong-Gyu Lee

Building extraction from remote sensing images is a challenging task due to the complex structure variations of the buildings. Existing methods employ convolutional or self-attention blocks to capture the multi-scale features in the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Siyuan Yao , Dongxiu Liu , Taotao Li , Shengjie Li , Wenqi Ren , Xiaochun Cao

Segmenting highly-overlapping image objects is challenging, because there is typically no distinction between real object contours and occlusion boundaries on images. Unlike previous instance segmentation methods, we model image formation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Lei Ke , Yu-Wing Tai , Chi-Keung Tang

In skeleton-based human activity understanding, existing methods often adopt the contrastive learning paradigm to construct a discriminative feature space. However, many of these approaches fail to exploit the structural inter-class…

Computer Vision and Pattern Recognition · Computer Science 2026-02-25 Hongda Liu , Yunfan Liu , Min Ren , Lin Sui , Yunlong Wang , Zhenan Sun

Image segmentation is a historic and significant computer vision task. With the help of deep learning techniques, image semantic segmentation has made great progresses. Over recent years, based on guidance of attention mechanism compared…

Computer Vision and Pattern Recognition · Computer Science 2022-10-12 Dongwei Sun , Zhuolin Gao

This work presents FG-Net, a general deep learning framework for large-scale point clouds understanding without voxelizations, which achieves accurate and real-time performance with a single NVIDIA GTX 1080 GPU. First, a novel noise and…

Computer Vision and Pattern Recognition · Computer Science 2021-06-18 Kangcheng Liu , Zhi Gao , Feng Lin , Ben M. Chen

How to learn long-range dependencies from 3D point clouds is a challenging problem in 3D point cloud analysis. Addressing this problem, we propose a global attention network for point cloud semantic segmentation, named as GA-Net, consisting…

Computer Vision and Pattern Recognition · Computer Science 2021-07-08 Shuang Deng , Qiulei Dong