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In this paper, we propose an end-to-end 3D CNN for action detection and segmentation in videos. The proposed architecture is a unified deep network that is able to recognize and localize action based on 3D convolution features. A video is…

计算机视觉与模式识别 · 计算机科学 2017-12-05 Rui Hou , Chen Chen , Mubarak Shah

In recent years, Convolutional Neural Networks (CNN) have proven to be efficient analysis tools for processing point clouds, e.g., for reconstruction, segmentation and classification. In this paper, we focus on the classification of edges…

The Versatile Video Coding (VVC) standard has been recently finalized by the Joint Video Exploration Team (JVET). Compared to the High Efficiency Video Coding (HEVC) standard, VVC offers about 50% compression efficiency gain, in terms of…

多媒体 · 计算机科学 2023-10-24 Yiqun Liu , Marc Riviere , Thomas Guionnet , Aline Roumy , Christine Guillemot

Various imaging artifacts, low signal-to-noise ratio, and bone surfaces appearing several millimeters in thickness have hindered the success of ultrasound (US) guided computer assisted orthopedic surgery procedures. In this work, a…

计算机视觉与模式识别 · 计算机科学 2018-06-27 Puyang Wang , Vishal M. Patel , Ilker Hacihaliloglu

Image segmentation is considered to be one of the critical tasks in hyperspectral remote sensing image processing. Recently, convolutional neural network (CNN) has established itself as a powerful model in segmentation and classification by…

计算机视觉与模式识别 · 计算机科学 2017-12-29 Fahim Irfan Alam , Jun Zhou , Alan Wee-Chung Liew , Xiuping Jia , Jocelyn Chanussot , Yongsheng Gao

Convolutional neural networks (CNNs) show outstanding performance in many image processing problems, such as image recognition, object detection and image segmentation. Semantic segmentation is a very challenging task that requires…

计算机视觉与模式识别 · 计算机科学 2019-07-12 Fan Jia , Jun Liu , Xue-cheng Tai

It remains a challenge to efficiently extract spatialtemporal information from skeleton sequences for 3D human action recognition. Although most recent action recognition methods are based on Recurrent Neural Networks which present…

计算机视觉与模式识别 · 计算机科学 2017-06-08 Hong Liu , Juanhui Tu , Mengyuan Liu

We present an approach to learn a dense pixel-wise labeling from image-level tags. Each image-level tag imposes constraints on the output labeling of a Convolutional Neural Network (CNN) classifier. We propose Constrained CNN (CCNN), a…

计算机视觉与模式识别 · 计算机科学 2015-10-20 Deepak Pathak , Philipp Krähenbühl , Trevor Darrell

LIDAR semantic segmentation, which assigns a semantic label to each 3D point measured by the LIDAR, is becoming an essential task for many robotic applications such as autonomous driving. Fast and efficient semantic segmentation methods are…

计算机视觉与模式识别 · 计算机科学 2021-04-28 Iñigo Alonso , Luis Riazuelo , Luis Montesano , Ana C. Murillo

We study an unsupervised domain adaptation problem for the semantic labeling of 3D point clouds, with a particular focus on domain discrepancies induced by different LiDAR sensors. Based on the observation that sparse 3D point clouds are…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Li Yi , Boqing Gong , Thomas Funkhouser

Accurate and fast scene understanding is one of the challenging task for autonomous driving, which requires to take full advantage of LiDAR point clouds for semantic segmentation. In this paper, we present a \textbf{concise} and…

计算机视觉与模式识别 · 计算机科学 2022-07-27 Hui-Xian Cheng , Xian-Feng Han , Guo-Qiang Xiao

Autonomous vehicles need to have a semantic understanding of the three-dimensional world around them in order to reason about their environment. State of the art methods use deep neural networks to predict semantic classes for each point in…

计算机视觉与模式识别 · 计算机科学 2021-09-27 Larissa T. Triess , David Peter , Christoph B. Rist , J. Marius Zöllner

Machine learning models have been employed to perform either physics-free data-driven or hybrid dynamical downscaling of climate data. Most of these implementations operate over relatively small downscaling factors because of the challenge…

大气与海洋物理 · 物理学 2023-02-24 Daniel Getter , Julie Bessac , Johann Rudi , Yan Feng

Dendritic microstructures are ubiquitous in nature and are the primary solidification morphologies in metallic materials. Techniques such as x-ray computed tomography (XCT) have provided new insights into dendritic phase transformation…

计算机视觉与模式识别 · 计算机科学 2022-05-04 Jim James , Nathan Pruyne , Tiberiu Stan , Marcus Schwarting , Jiwon Yeom , Seungbum Hong , Peter Voorhees , Ben Blaiszik , Ian Foster

In this paper we introduce a novel method for general semantic segmentation that can benefit from general semantics of Convolutional Neural Network (CNN). Our segmentation proposes visually and semantically coherent image segments. We use…

计算机视觉与模式识别 · 计算机科学 2016-09-30 Mahdyar Ravanbakhsh , Hossein Mousavi , Moin Nabi , Mohammad Rastegari , Carlo Regazzoni

In recent years, there has been a significant increase in the utilization of deep learning methods, particularly convolutional neural networks (CNNs), which have emerged as the dominant approach in various domains that involve structured…

机器学习 · 计算机科学 2024-04-09 Chester Luo , Kevin Lai

In contrast to the literature where local patterns in 3D point clouds are captured by customized convolutional operators, in this paper we study the problem of how to effectively and efficiently project such point clouds into a 2D image…

计算机视觉与模式识别 · 计算机科学 2020-10-09 Yecheng Lyu , Xinming Huang , Ziming Zhang

Single cell segmentation is critical and challenging in live cell imaging data analysis. Traditional image processing methods and tools require time-consuming and labor-intensive efforts of manually fine-tuning parameters. Slight variations…

In this paper, we propose a fast fully convolutional neural network (FCNN) for crowd segmentation. By replacing the fully connected layers in CNN with 1 by 1 convolution kernels, FCNN takes whole images as inputs and directly outputs…

计算机视觉与模式识别 · 计算机科学 2014-11-18 Kai Kang , Xiaogang Wang

A method of a Convolutional Neural Networks (CNN) for image classification with image preprocessing and hyperparameters tuning was proposed. The method aims at increasing the predictive performance for COVID-19 diagnosis while more complex…

图像与视频处理 · 电气工程与系统科学 2023-06-06 Kenan Morani , Devrim Unay