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Scene classification is a fundamental perception task for environmental understanding in today's robotics. In this paper, we have attempted to exploit the use of popular machine learning technique of deep learning to enhance scene…

Computer Vision and Pattern Recognition · Computer Science 2015-09-23 Yiyi Liao , Sarath Kodagoda , Yue Wang , Lei Shi , Yong Liu

One core challenge in object pose estimation is to ensure accurate and robust performance for large numbers of diverse foreground objects amidst complex background clutter. In this work, we present a scalable framework for accurately…

Computer Vision and Pattern Recognition · Computer Science 2018-10-09 Chi Li , Jin Bai , Gregory D. Hager

We introduce a novel framework for Continual Learning in 3D object classification. Our approach, CL3D, is based on the selection of prototypes from each class using spectral clustering. For non-Euclidean data such as point clouds, spectral…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Hossein Resani , Behrooz Nasihatkon , Mohammadreza Alimoradi Jazi

4D radar super-resolution, which aims to reconstruct sparse and noisy point clouds into dense and geometrically consistent representations, is a foundational problem in autonomous perception. However, existing methods often suffer from high…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Minqing Huang , Shouyi Lu , Boyuan Zheng , Ziyao Li , Xiao Tang , Guirong Zhuo

We present OctNet, a representation for deep learning with sparse 3D data. In contrast to existing models, our representation enables 3D convolutional networks which are both deep and high resolution. Towards this goal, we exploit the…

Computer Vision and Pattern Recognition · Computer Science 2017-04-11 Gernot Riegler , Ali Osman Ulusoy , Andreas Geiger

Both humans and deep learning models can recognize objects from 3D shapes depicted with sparse visual information, such as a set of points randomly sampled from the surfaces of 3D objects (termed a point cloud). Although deep learning…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Shuhao Fu , Philip J. Kellman , Hongjing Lu

We present a novel real-time capable learning method that jointly perceives a 3D scene's geometry structure and semantic labels. Recent approaches to real-time 3D scene reconstruction mostly adopt a volumetric scheme, where a Truncated…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Ziyang Hong , C. Patrick Yue

We introduce an approach for selecting objects in neural volumetric 3D representations, such as multi-plane images (MPI) and neural radiance fields (NeRF). Our approach takes a set of foreground and background 2D user scribbles in one view…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Zhongzheng Ren , Aseem Agarwala , Bryan Russell , Alexander G. Schwing , Oliver Wang

In this work we target a learnable output representation that allows continuous, high resolution outputs of arbitrary shape. Recent works represent 3D surfaces implicitly with a Neural Network, thereby breaking previous barriers in…

Computer Vision and Pattern Recognition · Computer Science 2020-10-28 Julian Chibane , Aymen Mir , Gerard Pons-Moll

Most existing salient object detection (SOD) models are difficult to apply due to the complex and huge model structures. Although some lightweight models are proposed, the accuracy is barely satisfactory. In this paper, we design a novel…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Jin Zhang , Qiuwei Liang , Yanjiao Shi

In this paper, we introduce a novel network, called discriminative feature network (DFNet), to address the unsupervised video object segmentation task. To capture the inherent correlation among video frames, we learn discriminative features…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Mingmin Zhen , Shiwei Li , Lei Zhou , Jiaxiang Shang , Haoan Feng , Tian Fang , Long Quan

Convolutional neural network (CNN) has led to significant progress in object detection. In order to detect the objects in various sizes, the object detectors often exploit the hierarchy of the multi-scale feature maps called feature…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Jin Hyeok Yoo , Dongsuk Kum , Jun Won Choi

3D scene segmentation based on neural implicit representation has emerged recently with the advantage of training only on 2D supervision. However, existing approaches still requires expensive per-scene optimization that prohibits…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Hanlin Chen , Chen Li , Mengqi Guo , Zhiwen Yan , Gim Hee Lee

In this paper, we develop a new method, termed SDF-3DGAN, for 3D object generation and 3D-Aware image synthesis tasks, which introduce implicit Signed Distance Function (SDF) as the 3D object representation method in the generative field.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Lutao Jiang , Ruyi Ji , Libo Zhang

We propose SDFDiff, a novel approach for image-based shape optimization using differentiable rendering of 3D shapes represented by signed distance functions (SDFs). Compared to other representations, SDFs have the advantage that they can…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Yue Jiang , Dantong Ji , Zhizhong Han , Matthias Zwicker

We present 3DVNet, a novel multi-view stereo (MVS) depth-prediction method that combines the advantages of previous depth-based and volumetric MVS approaches. Our key idea is the use of a 3D scene-modeling network that iteratively updates a…

Computer Vision and Pattern Recognition · Computer Science 2021-12-02 Alexander Rich , Noah Stier , Pradeep Sen , Tobias Höllerer

Traditional computer graphics rendering pipeline is designed for procedurally generating 2D quality images from 3D shapes with high performance. The non-differentiability due to discrete operations such as visibility computation makes it…

Computer Vision and Pattern Recognition · Computer Science 2019-04-10 Thu Nguyen-Phuoc , Chuan Li , Stephen Balaban , Yong-Liang Yang

Inferring representations of 3D scenes from 2D observations is a fundamental problem of computer graphics, computer vision, and artificial intelligence. Emerging 3D-structured neural scene representations are a promising approach to 3D…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Vincent Sitzmann , Semon Rezchikov , William T. Freeman , Joshua B. Tenenbaum , Fredo Durand

Inferring the 3D shape of an object from an RGB image has shown impressive results, however, existing methods rely primarily on recognizing the most similar 3D model from the training set to solve the problem. These methods suffer from poor…

Computer Vision and Pattern Recognition · Computer Science 2019-10-22 Haozhe Xie , Hongxun Yao , Shangchen Zhou , Shengping Zhang , Xiaoshuai Sun , Wenxiu Sun

Scene Classification has been addressed with numerous techniques in computer vision literature. However, with the increasing number of scene classes in datasets in the field, it has become difficult to achieve high accuracy in the context…

Robotics · Computer Science 2019-08-29 Bao Xin Chen , Raghavender Sahdev , Dekun Wu , Xing Zhao , Manos Papagelis , John K. Tsotsos