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In this paper, we propose a robust end-to-end multi-modal pipeline for place recognition where the sensor systems can differ from the map building to the query. Our approach operates directly on images and LiDAR scans without requiring any…

机器人学 · 计算机科学 2022-01-13 Lukas Bernreiter , Lionel Ott , Juan Nieto , Roland Siegwart , Cesar Cadena

The key idea of variational auto-encoders (VAEs) resembles that of traditional auto-encoder models in which spatial information is supposed to be explicitly encoded in the latent space. However, the latent variables in VAEs are vectors,…

机器学习 · 计算机科学 2019-01-23 Zhengyang Wang , Hao Yuan , Shuiwang Ji

Bird's-eye-view (BEV) is a powerful and widely adopted representation for road scenes that captures surrounding objects and their spatial locations, along with overall context in the scene. In this work, we focus on bird's eye semantic…

计算机视觉与模式识别 · 计算机科学 2020-06-24 Mong H. Ng , Kaahan Radia , Jianfei Chen , Dequan Wang , Ionel Gog , Joseph E. Gonzalez

Reliable depth estimation from spherical images is crucial for 360{\deg} vision in robotic navigation and immersive scene understanding. However, the onboard spherical camera can experience unintentional pose variations in real-world…

计算机视觉与模式识别 · 计算机科学 2026-04-28 Soulayma Gazzeh , Giuseppe Mazzola , Liliana Lo Presti , Marco La Cascia

The parameters estimation of a system using indirect measurements over the same system is a problem that occurs in many fields of engineering, known as the inverse problem. It also happens in the field of underwater acoustic, especially in…

信号处理 · 电气工程与系统科学 2020-03-31 Marco Apolinario , Samuel Huaman Bustamante , Giorgio Morales , Joel Telles , Daniel Diaz

Sparse coding (Sc) has been studied very well as a powerful data representation method. It attempts to represent the feature vector of a data sample by reconstructing it as the sparse linear combination of some basic elements, and a $L_2$…

机器学习 · 计算机科学 2016-03-15 Mohua Zhang , Jianhua Peng , Xuejie Liu , Jim Jing-Yan Wang

We present a method to map 2D image observations of a scene to a persistent 3D scene representation, enabling novel view synthesis and disentangled representation of the movable and immovable components of the scene. Motivated by the…

We present a new deep learning approach for matching deformable shapes by introducing {\it Shape Deformation Networks} which jointly encode 3D shapes and correspondences. This is achieved by factoring the surface representation into (i) a…

计算机视觉与模式识别 · 计算机科学 2018-07-30 Thibault Groueix , Matthew Fisher , Vladimir G. Kim , Bryan C. Russell , Mathieu Aubry

Recently, the topic of graph representation learning has received plenty of attention. Existing approaches usually focus on structural properties only and thus they are not sufficient for those spatial graphs where the nodes are associated…

机器学习 · 计算机科学 2019-11-12 Zheng Wang , Ce Ju , Gao Cong , Cheng Long

The question of representation of 3D geometry is of vital importance when it comes to leveraging the recent advances in the field of machine learning for geometry processing tasks. For common unstructured surface meshes state-of-the-art…

计算机视觉与模式识别 · 计算机科学 2018-09-28 Isaak Lim , Alexander Dielen , Marcel Campen , Leif Kobbelt

Monocular 3D Semantic Scene Completion (SSC) has garnered significant attention in recent years due to its potential to predict complex semantics and geometry shapes from a single image, requiring no 3D inputs. In this paper, we identify…

计算机视觉与模式识别 · 计算机科学 2023-10-13 Jiawei Yao , Chuming Li , Keqiang Sun , Yingjie Cai , Hao Li , Wanli Ouyang , Hongsheng Li

Accurately recognizing a revisited place is crucial for embodied agents to localize and navigate. This requires visual representations to be distinct, despite strong variations in camera viewpoint and scene appearance. Existing visual place…

计算机视觉与模式识别 · 计算机科学 2024-09-27 Kartik Garg , Sai Shubodh Puligilla , Shishir Kolathaya , Madhava Krishna , Sourav Garg

Surface crack segmentation poses a challenging computer vision task as background, shape, colour and size of cracks vary. In this work we propose optimized deep encoder-decoder methods consisting of a combination of techniques which yield…

计算机视觉与模式识别 · 计算机科学 2021-08-27 Jacob König , Mark Jenkins , Mike Mannion , Peter Barrie , Gordon Morison

Sparse representations have been successfully applied to signal processing, computer vision and machine learning. Currently there is a trend to learn sparse models directly on structure data, such as region covariance. However, such methods…

计算机视觉与模式识别 · 计算机科学 2016-02-10 Xiyang Dai , Sameh Khamis , Yangmuzi Zhang , Larry S. Davis

Geospatial analysis lacks methods like the word vector representations and pre-trained networks that significantly boost performance across a wide range of natural language and computer vision tasks. To fill this gap, we introduce Tile2Vec,…

计算机视觉与模式识别 · 计算机科学 2018-05-31 Neal Jean , Sherrie Wang , Anshul Samar , George Azzari , David Lobell , Stefano Ermon

Hyperdimensional computing (HDC) is an emerging computing paradigm that imitates the brain's structure to offer a powerful and efficient processing and learning model. In HDC, the data are encoded with long vectors, called hypervectors,…

机器学习 · 计算机科学 2023-08-02 Sercan Aygun , Mehran Shoushtari Moghadam , M. Hassan Najafi , Mohsen Imani

Besides local features, global information plays an essential role in semantic segmentation, while recent works usually fail to explicitly extract the meaningful global information and make full use of it. In this paper, we propose a…

计算机视觉与模式识别 · 计算机科学 2020-01-27 Jiachen Xu , Jingyu Gong , Jie Zhou , Xin Tan , Yuan Xie , Lizhuang Ma

A key challenge in robot manipulation lies in developing policy models with strong spatial understanding, the ability to reason about 3D geometry, object relations, and robot embodiment. Existing methods often fall short: 3D point cloud…

机器人学 · 计算机科学 2025-09-25 Xuewu Lin , Tianwei Lin , Lichao Huang , Hongyu Xie , Yiwei Jin , Keyu Li , Zhizhong Su

Mesh models are a promising approach for encoding the structure of 3D objects. Current mesh reconstruction systems predict uniformly distributed vertex locations of a predetermined graph through a series of graph convolutions, leading to…

计算机视觉与模式识别 · 计算机科学 2019-02-01 Edward J. Smith , Scott Fujimoto , Adriana Romero , David Meger

Transformer-based methods have swept the benchmarks on 2D and 3D detection on images. Because tokenization before the attention mechanism drops the spatial information, positional encoding becomes critical for those methods. Recent works…

计算机视觉与模式识别 · 计算机科学 2023-07-31 Changyong Shu , JIajun Deng , Fisher Yu , Yifan Liu