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๐Ÿ” jimmy ba ๐Ÿ“‚ Engineering
Showing 79 results for "jimmy ba" in Engineering
Engineering Preprint PDF DOI

RadarSplat-RIO: Indoor Radar-Inertial Odometry with Gaussian Splatting-Based Radar Bundle Adjustment

Pou-Chun Kung, Yuan Tian, Zhengqin Li, Yue Liu, Eric Whitmire, Wolf Kienzle, Hrvoje Benko ยท 2026

Radar is more resilient to adverse weather and lighting conditions than visual and Lidar simultaneous localization and mapping (SLAM). However, most radar SLAM pipelines still rely heavily on frame-toโ€ฆ

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Engineering Preprint PDF DOI

Channel Estimation and LDPC Decoding for Bursty Phase Noise

Han Cui, Frank R. Kschischang, Magnus Karlsson, Erik Agrell ยท 2026

Time-varying distortions in communication systems can significantly degrade the performance of soft-decision forward error correction. This paper presents a burst-aware (BA) low-density parity-check (โ€ฆ

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Engineering Preprint PDF DOI

A Consistency-Improved LiDAR-Inertial Bundle Adjustment

Xinran Li, Shuaikang Zheng, Pengcheng Zheng, Xinyang Wang, Jiacheng Li, Zhitian Li, Xudong Zou ยท 2026

Simultaneous Localization and Mapping (SLAM) using 3D LiDAR has emerged as a cornerstone for autonomous navigation in robotics. While feature-based SLAM systems have achieved impressive results by levโ€ฆ

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Engineering Preprint PDF DOI

Semi-distributed Cross-modal Air-Ground Relative Localization

Weining Lu, Deer Bin, Lian Ma, Ming Ma, Zhihao Ma, Xiangyang Chen, Longfei Wang, Yixiao Feng, Zhouxian Jiang, Yongliang Shi, Bin Liang ยท 2025

Efficient, accurate, and flexible relative localization is crucial in air-ground collaborative tasks. However, current approaches for robot relative localization are primarily realized in the form of โ€ฆ

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Engineering Preprint PDF DOI

On the Design of Capacity-Achieving Distributions for Discrete-Time Poisson Channel with Low-Precision ADCs

Qianqian Li, Lintao Li, Lixiang Liu, Lei Yang, Caihong Gong, Hua Li, Shiya Hao, Xiaoming Dai ยท 2025

This paper investigates the design of the capacity-achieving input distribution for the discrete-time Poisson channel (DTPC) under dark current effects with low-precision analog-to-digital converters โ€ฆ

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Engineering Preprint PDF DOI

Deep Visual Odometry for Stereo Event Cameras

Sheng Zhong, Junkai Niu, Yi Zhou ยท 2025

Event-based cameras are bio-inspired sensors with pixels that independently and asynchronously respond to brightness changes at microsecond resolution, offering the potential to handle state estimatioโ€ฆ

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Engineering Preprint PDF DOI

CURL-SLAM: Continuous and Compact LiDAR Mapping

Kaicheng Zhang, Shida Xu, Yining Ding, Xianwen Kong, Sen Wang ยท 2025

This paper studies 3D LiDAR mapping with a focus on developing an updatable and localizable map representation that enables continuity, compactness and consistency in 3D maps. Traditional LiDAR Simultโ€ฆ

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Engineering Preprint PDF DOI

Loop Closure from Two Views: Revisiting PGO for Scalable Trajectory Estimation through Monocular Priors

Tian Yi Lim, Boyang Sun, Marc Pollefeys, Hermann Blum ยท 2025

(Visual) Simultaneous Localization and Mapping (SLAM) remains a fundamental challenge in enabling autonomous systems to navigate and understand large-scale environments. Traditional SLAM approaches stโ€ฆ

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Engineering Preprint PDF DOI

MAD-BA: 3D LiDAR Bundle Adjustment -- from Uncertainty Modelling to Structure Optimization

Krzysztof Cwian, Luca Di Giammarino, Simone Ferrari, Thomas Ciarfuglia, Giorgio Grisetti, Piotr Skrzypczynski ยท 2025

The joint optimization of sensor poses and 3D structure is fundamental for state estimation in robotics and related fields. Current LiDAR systems often prioritize pose optimization, with structure refโ€ฆ

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Engineering Preprint PDF DOI

Targetless Intrinsics and Extrinsic Calibration of Multiple LiDARs and Cameras with IMU using Continuous-Time Estimation

Yuezhang Lv, Yunzhou Zhang, Chao Lu, Jiajun Zhu, Song Wu ยท 2025

Accurate spatiotemporal calibration is a prerequisite for multisensor fusion. However, sensors are typically asynchronous, and there is no overlap between the fields of view of cameras and LiDARs, posโ€ฆ

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Engineering Preprint PDF DOI

Ba-ZebraConf: A Three-Dimension Bayesian Framework for Efficient System Troubleshooting

Deyi Xing, Weicong Chen, Curtis Tatsuoka, Xiaoyi Lu ยท 2024

The proliferation of heterogeneous configurations in distributed systems presents significant challenges in ensuring stability and efficiency. Misconfigurations, driven by complex parameter interdepenโ€ฆ

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Engineering Preprint PDF DOI

Teaching Shortest Path Algorithms With a Robot and Overlaid Projections

Pavel Jolakoski, Jordan Aiko Deja, Klen Copic Pucihar, Matjaz Kljun ยท 2024

Robots have the potential to enhance teaching of advanced computer science topics, making abstract concepts more tangible and interactive. In this paper, we present Timmy-a GoPiGo robot augmented withโ€ฆ

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Engineering Preprint PDF DOI

Voxel-SLAM: A Complete, Accurate, and Versatile LiDAR-Inertial SLAM System

Zheng Liu, Haotian Li, Chongjian Yuan, Xiyuan Liu, Jiarong Lin, Rundong Li, Chunran Zheng, Bingyang Zhou, Wenyi Liu, Fu Zhang ยท 2024

In this work, we present Voxel-SLAM: a complete, accurate, and versatile LiDAR-inertial SLAM system that fully utilizes short-term, mid-term, long-term, and multi-map data associations to achieve realโ€ฆ

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Engineering Preprint PDF DOI

High-Speed Stereo Visual SLAM for Low-Powered Computing Devices

Ashish Kumar, Jaesik Park, Laxmidhar Behera ยท 2024

We present an accurate and GPU-accelerated Stereo Visual SLAM design called Jetson-SLAM. It exhibits frame-processing rates above 60FPS on NVIDIA's low-powered 10W Jetson-NX embedded computer and abovโ€ฆ

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Engineering Preprint PDF DOI

Bundle Adjustment in the Eager Mode

Zitong Zhan, Huan Xu, Zihang Fang, Xinpeng Wei, Yaoyu Hu, Chen Wang ยท 2024

Bundle adjustment (BA) is a critical technique in various robotic applications such as simultaneous localization and mapping (SLAM), augmented reality (AR), and photogrammetry. BA optimizes parametersโ€ฆ

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Engineering Preprint PDF DOI

LVBA: LiDAR-Visual Bundle Adjustment for RGB Point Cloud Mapping

Rundong Li, Xiyuan Liu, Haotian Li, Zheng Liu, Jiarong Lin, Yixi Cai, Fu Zhang ยท 2024

Point cloud maps with accurate color are crucial in robotics and mapping applications. Existing approaches for producing RGB-colorized maps are primarily based on real-time localization using filter-bโ€ฆ

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Engineering Preprint PDF DOI

Methods to Measure the Broncho-Arterial Ratio and Wall Thickness in the Right Lower Lobe for Defining Radiographic Reversibility of Bronchiectasis

Abhijith R. Beeravolu, Ian Brent Masters, Mirjam Jonkman, Kheng Cher Yeo, Spyridon Prountzos, Rahul J Thomas, Eva Ignatious, Sami Azam, Gabrielle B McCallum, Efthymia Alexopoulou, Anne B Chang, Friso De Boer ยท 2024

The diagnosis of bronchiectasis requires measuring abnormal bronchial dilation. It is confirmed using a chest CT scan, where the key feature is an increased broncho-arterial ratio (BAR) (>0.8 in childโ€ฆ

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Engineering Preprint PDF DOI

LVCP: LiDAR-Vision Tightly Coupled Collaborative Real-time Relative Positioning

Zhuozhu Jian, Qixuan Li, Shengtao Zheng, Xueqian Wang, Xinlei Chen ยท 2024

In air-ground collaboration scenarios without GPS and prior maps, the relative positioning of drones and unmanned ground vehicles (UGVs) has always been a challenge. For a drone equipped with monoculaโ€ฆ

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Engineering Preprint PDF DOI

Advancements in Translation Accuracy for Stereo Visual-Inertial Initialization

Han Song, Zhongche Qu, Zhi Zhang, Zihan Ye, Cong Liu ยท 2024

As the current initialization method in the state-of-the-art Stereo Visual-Inertial SLAM framework, ORB-SLAM3 has limitations. Its success depends on the performance of the pure stereo SLAM system andโ€ฆ

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Engineering Preprint PDF DOI

EC-SLAM: Effectively Constrained Neural RGB-D SLAM with Sparse TSDF Encoding and Global Bundle Adjustment

Guanghao Li, Qi Chen, YuXiang Yan, Jian Pu ยท 2024

We introduce EC-SLAM, a real-time dense RGB-D simultaneous localization and mapping (SLAM) system leveraging Neural Radiance Fields (NeRF). While recent NeRF-based SLAM systems have shown promising reโ€ฆ

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