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Reconstructing 3D point clouds into triangle meshes is a key problem in computational geometry and surface reconstruction. Point cloud triangulation solves this problem by providing edge information to the input points. Since no vertex…

计算机视觉与模式识别 · 计算机科学 2023-08-22 Huan Lei , Ruitao Leng , Liang Zheng , Hongdong Li

Point clouds are a very efficient way to represent volumetric data in medical imaging. First, they do not occupy resources for empty spaces and therefore can avoid trade-offs between resolution and field-of-view for voxel-based 3D…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Mattias Paul Heinrich

In this paper, we challenge the common assumption that collapsing the spatial dimensions of a 3D (spatial-channel) tensor in a convolutional neural network (CNN) into a vector via global pooling removes all spatial information.…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Md Amirul Islam , Matthew Kowal , Sen Jia , Konstantinos G. Derpanis , Neil D. B. Bruce

We propose a new symplectic convolutional neural network (CNN) architecture by leveraging symplectic neural networks, proper symplectic decomposition, and tensor techniques. Specifically, we first introduce a mathematically equivalent form…

机器学习 · 计算机科学 2026-02-06 Süleyman Yıldız , Konrad Janik , Peter Benner

Recently, image representation built upon Convolutional Neural Network (CNN) has been shown to provide effective descriptors for image search, outperforming pre-CNN features as short-vector representations. Yet such models are not…

计算机视觉与模式识别 · 计算机科学 2016-02-25 Giorgos Tolias , Ronan Sicre , Hervé Jégou

Convolutional Neural Networks have revolutionized vision applications. There are image domains and representations, however, that cannot be handled by standard CNNs (e.g., spherical images, superpixels). Such data are usually processed…

计算机视觉与模式识别 · 计算机科学 2022-07-20 David Hart , Michael Whitney , Bryan Morse

Texture classification is an important and challenging problem in many image processing applications. While convolutional neural networks (CNNs) achieved significant successes for image classification, texture classification remains a…

计算机视觉与模式识别 · 计算机科学 2017-07-25 Shin Fujieda , Kohei Takayama , Toshiya Hachisuka

The Deep Convolutional Neural Networks (CNNs) have obtained a great success for pattern recognition, such as recognizing the texts in images. But existing CNNs based frameworks still have several drawbacks: 1) the traditaional pooling…

计算机视觉与模式识别 · 计算机科学 2020-01-20 Zhao Zhang , Zemin Tang , Zheng Zhang , Yang Wang , Jie Qin , Meng Wang

Mesh is an important and powerful type of data for 3D shapes and widely studied in the field of computer vision and computer graphics. Regarding the task of 3D shape representation, there have been extensive research efforts concentrating…

计算机视觉与模式识别 · 计算机科学 2018-11-29 Yutong Feng , Yifan Feng , Haoxuan You , Xibin Zhao , Yue Gao

Surface meshes are widely used shape representations and capture finer geometry data than point clouds or volumetric grids, but are challenging to apply CNNs directly due to their non-Euclidean structure. We use parallel frames on surface…

计算机视觉与模式识别 · 计算机科学 2020-06-15 Yuqi Yang , Shilin Liu , Hao Pan , Yang Liu , Xin Tong

We propose a novel and efficient representation for single-view depth estimation using Convolutional Neural Networks (CNNs). Point-cloud is generally used for CNN-based 3D scene reconstruction; however it has some drawbacks: (1) it is…

计算机视觉与模式识别 · 计算机科学 2020-03-12 Masaya Kaneko , Ken Sakurada , Kiyoharu Aizawa

Point clouds provide a flexible geometric representation suitable for countless applications in computer graphics; they also comprise the raw output of most 3D data acquisition devices. While hand-designed features on point clouds have long…

计算机视觉与模式识别 · 计算机科学 2019-06-12 Yue Wang , Yongbin Sun , Ziwei Liu , Sanjay E. Sarma , Michael M. Bronstein , Justin M. Solomon

Like other applications in computer vision, medical image segmentation has been most successfully addressed using deep learning models that rely on the convolution operation as their main building block. Convolutions enjoy important…

图像与视频处理 · 电气工程与系统科学 2022-04-05 Davood Karimi , Serge Vasylechko , Ali Gholipour

Current CNN-based algorithms for recovering the 3D pose of an object in an image assume knowledge about both the object category and its 2D localization in the image. In this paper, we relax one of these constraints and propose to solve the…

计算机视觉与模式识别 · 计算机科学 2018-07-24 Siddharth Mahendran , Haider Ali , Rene Vidal

Convolutional Neural Networks (CNNs) were recently shown to provide state-of-the-art results for object category viewpoint estimation. However different ways of formulating this problem have been proposed and the competing approaches have…

计算机视觉与模式识别 · 计算机科学 2016-09-14 Francisco Massa , Renaud Marlet , Mathieu Aubry

Recent advances in deep convolutional neural networks (CNNs) have motivated researchers to adapt CNNs to directly model points in 3D point clouds. Modeling local structure has been proven to be important for the success of convolutional…

计算机视觉与模式识别 · 计算机科学 2018-11-20 Shiyi Lan , Ruichi Yu , Gang Yu , Larry S. Davis

Multi-organ segmentation is one of most successful applications of deep learning in medical image analysis. Deep convolutional neural nets (CNNs) have shown great promise in achieving clinically applicable image segmentation performance on…

图像与视频处理 · 电气工程与系统科学 2020-12-18 Hao Tang , Xingwei Liu , Kun Han , Shanlin Sun , Narisu Bai , Xuming Chen , Huang Qian , Yong Liu , Xiaohui Xie

Point cloud classification plays an important role in a wide range of airborne light detection and ranging (LiDAR) applications, such as topographic mapping, forest monitoring, power line detection, and road detection. However, due to the…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Congcong Wen , Lina Yang , Ling Peng , Xiang Li , Tianhe Chi

Despite being resource-intensive to train, 3D convolutional neural networks (CNNs) have been the standard approach to classify CT and MRI scans. Recent work suggests that deep multiple instance learning (MIL) may be a more efficient…

机器学习 · 计算机科学 2026-04-30 Ethan Harvey , Dennis Johan Loevlie , Amir Ali Satani , Wansu Chen , David M. Kent , Michael C. Hughes

Polygonal meshes have become the standard for discretely approximating 3D shapes, thanks to their efficiency and high flexibility in capturing non-uniform shapes. This non-uniformity, however, leads to irregularity in the mesh structure,…

计算机视觉与模式识别 · 计算机科学 2023-07-04 Giuseppe Vecchio , Luca Prezzavento , Carmelo Pino , Francesco Rundo , Simone Palazzo , Concetto Spampinato