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In this paper, we propose an optimization based SLAM approach to simultaneously optimize the robot trajectory and the occupancy map using 2D laser scans (and odometry) information. The key novelty is that the robot poses and the occupancy…

Robotics · Computer Science 2024-05-20 Liang Zhao , Yingyu Wang , Shoudong Huang

Three-dimensional neutron transport calculations using the Method of Characteristics (MOC) are highly regarded for their exceptional computational efficiency, precision, and stability. Nevertheless, when dealing with extensive-scale…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-03-25 Faguo Zhou , Shunde Li , Rong Xue , Lingkun Bu , Ningming Nie , Peng Shi , Jue Wang , Yun Hu , Zongguo Wang , Yangang Wang , Qinmeng Yang , Miao Yu

In this paper we provide an overview of a new framework for robot perception, real-world modelling, and navigation that uses a stochastic tesselated representation of spatial information called the Occupancy Grid. The Occupancy Grid is a…

Robotics · Computer Science 2013-04-05 A. Elfes

Image matching is a fundamental and critical task in various visual applications, such as Simultaneous Localization and Mapping (SLAM) and image retrieval, which require accurate pose estimation. However, most existing methods ignore the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-31 Miao Fan , Mingrui Chen , Chen Hu , Shuchang Zhou

Forecasting the scalable future states of surrounding traffic participants in complex traffic scenarios is a critical capability for autonomous vehicles, as it enables safe and feasible decision-making. Recent successes in learning-based…

Robotics · Computer Science 2023-05-08 Haochen Liu , Zhiyu Huang , Chen Lv

In this technical report, we present our solution for the Vision-Centric 3D Occupancy and Flow Prediction track in the nuScenes Open-Occ Dataset Challenge at CVPR 2024. Our innovative approach involves a dual-stage framework that enhances…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Dubing Chen , Wencheng Han , Jin Fang , Jianbing Shen

Remarkable progress has been made in 3D reconstruction from single-view RGB-D inputs. MCC is the current state-of-the-art method in this field, which achieves unprecedented success by combining vision Transformers with large-scale training.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Stefan Lionar , Xiangyu Xu , Min Lin , Gim Hee Lee

Sketch-based modeling strives to bring the ease and immediacy of drawing to the 3D world. However, while drawings are easy for humans to create, they are very challenging for computers to interpret due to their sparsity and ambiguity. We…

Graphics · Computer Science 2018-06-20 Johanna Delanoy , Mathieu Aubry , Phillip Isola , Alexei A. Efros , Adrien Bousseau

Inferring the 3D structure from a single image, particularly in occluded regions, remains a fundamental yet unsolved challenge in vision-centric autonomous driving. Existing unsupervised approaches typically train a neural radiance field…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Zizhan Guo , Yi Feng , Mengtan Zhang , Haoran Zhang , Wei Ye , Rui Fan

The field of autonomous driving is experiencing a surge of interest in world models, which aim to predict potential future scenarios based on historical observations. In this paper, we introduce DFIT-OccWorld, an efficient 3D occupancy…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Haiming Zhang , Ying Xue , Xu Yan , Jiacheng Zhang , Weichao Qiu , Dongfeng Bai , Bingbing Liu , Shuguang Cui , Zhen Li

Accurate 3D semantic occupancy perception is essential for autonomous driving in complex environments with diverse and irregular objects. While vision-centric methods suffer from geometric inaccuracies, LiDAR-based approaches often lack…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Zhiqiang Wei , Lianqing Zheng , Jianan Liu , Tao Huang , Qing-Long Han , Wenwen Zhang , Fengdeng Zhang

In this paper, we propose OccTENS, a generative occupancy world model that enables controllable, high-fidelity long-term occupancy generation while maintaining computational efficiency. Different from visual generation, the occupancy world…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Bu Jin , Songen Gu , Xiaotao Hu , Yupeng Zheng , Xiaoyang Guo , Qian Zhang , Xiaoxiao Long , Wei Yin

Point clouds are crucial for capturing three-dimensional data but often suffer from incompleteness due to limitations such as resolution and occlusion. Traditional methods typically rely on point-based approaches within discriminative…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Guoqing Zhang , Jian Liu

Autonomous machines (e.g., vehicles, mobile robots, drones) require sophisticated 3D mapping to perceive the dynamic environment. However, maintaining a real-time 3D map is expensive both in terms of compute and memory requirements,…

Hardware Architecture · Computer Science 2022-05-09 Tianyu Jia , En-Yu Yang , Yu-Shun Hsiao , Jonathan Cruz , David Brooks , Gu-Yeon Wei , Vijay Janapa Reddi

With the aim of bridging the gap between high quality reconstruction and mobile robot motion planning, we propose an efficient system that leverages the concept of adaptive-resolution volumetric mapping, which naturally integrates with the…

We present O-CNN, an Octree-based Convolutional Neural Network (CNN) for 3D shape analysis. Built upon the octree representation of 3D shapes, our method takes the average normal vectors of a 3D model sampled in the finest leaf octants as…

Computer Vision and Pattern Recognition · Computer Science 2017-12-06 Peng-Shuai Wang , Yang Liu , Yu-Xiao Guo , Chun-Yu Sun , Xin Tong

In this paper, we introduce ProtoOcc, a novel 3D occupancy prediction model designed to predict the occupancy states and semantic classes of 3D voxels through a deep semantic understanding of scenes. ProtoOcc consists of two main…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Jungho Kim , Changwon Kang , Dongyoung Lee , Sehwan Choi , Jun Won Choi

Dense 3D semantic occupancy perception is critical for mobile robots operating in pedestrian-rich environments, yet it remains underexplored compared to its application in autonomous driving. To address this gap, we present MobileOcc, a…

Robotics · Computer Science 2025-11-24 Junseo Kim , Guido Dumont , Xinyu Gao , Gang Chen , Holger Caesar , Javier Alonso-Mora

Occupancy World Models (OWMs) aim to predict future scenes via 3D voxelized representations of the environment to support intelligent motion planning. Existing approaches typically generate full future occupancy states from VAE-style latent…

Robotics · Computer Science 2025-12-02 Haoran Xu , Peixi Peng , Guang Tan , Yiqian Chang , Yisen Zhao , Yonghong Tian

We investigate the multi-step prediction of the drivable space, represented by Occupancy Grid Maps (OGMs), for autonomous vehicles. Our motivation is that accurate multi-step prediction of the drivable space can efficiently improve path…

Machine Learning · Computer Science 2019-01-24 Nima Mohajerin , Mohsen Rohani