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Liren Jin

11 accepted papers

2025

ActiveGS: Active Scene Reconstruction Using Gaussian Splatting

RA-L 2025

Robotics applications often rely on scene reconstructions to enable downstream tasks. In this work, we tackle the challenge of actively building an accurate map of an unknown scene using an RGB-D camera on a mobile platform. We propose a hybrid map representation that combines a Gaussian splatting m

Cited by 37SourcecodeScholar
2025

PINGS: Gaussian Splatting Meets Distance Fields within a Point-Based Implicit Neural Map

RSS 2025poster

Robots require high-fidelity reconstructions of their environment for effective operation. Such scene representations should be both, geometrically accurate and photorealistic to support downstream tasks. While this can be achieved by building distance fields from range sensors and radiance fields f…

Cited by 2PDFcodeScholar
2024

Active Implicit Reconstruction Using One-Shot View Planning

ICRA 2024poster

Active object reconstruction using autonomous robots is gaining great interest. A primary goal in this task is to maximize the information of the object to be reconstructed, given limited on-board resources. Previous view planning methods exhibit inefficiency since they rely on an iterative paradigm…

Cited by 8SourcecodeScholar
2024

Exploiting Priors from 3D Diffusion Models for RGB-Based One-Shot View Planning

IROS 2024

Object reconstruction is relevant for many autonomous robotic tasks that require interaction with the environment. A key challenge in such scenarios is planning view configurations to collect informative measurements for reconstructing an initially unknown object. One-shot view planning enables effi

Cited by 9SourcecodeScholar
2024

How Many Views Are Needed to Reconstruct an Unknown Object Using NeRF?

ICRA 2024poster

Neural Radiance Fields (NeRFs) are gaining significant interest for online active object reconstruction due to their exceptional memory efficiency and requirement for only posed RGB inputs. Previous NeRF-based view planning methods exhibit computational inefficiency since they rely on an iterative p…

Cited by 14SourcecodeScholar
2024

STAIR: Semantic-Targeted Active Implicit Reconstruction

IROS 2024poster

Many autonomous robotic applications require object-level understanding when deployed. Actively reconstructing objects of interest, i.e. objects with specific semantic meanings, is therefore relevant for a robot to perform downstream tasks in an initially unknown environment. In this work, we propos…

Cited by 1SourcecodeScholar
2023

NeU-NBV: Next Best View Planning Using Uncertainty Estimation in Image-Based Neural Rendering

IROS 2023poster

Autonomous robotic tasks require actively perceiving the environment to achieve application-specific goals. In this paper, we address the problem of positioning an RGB camera to collect the most informative images to represent an unknown scene, given a limited measurement budget. We propose a novel…

Cited by 65SourcecodeScholar
2022

Adaptive Informative Path Planning Using Deep Reinforcement Learning for UAV-based Active Sensing

ICRA 2022poster

Aerial robots are increasingly being utilized for environmental monitoring and exploration. However, a key challenge is efficiently planning paths to maximize the information value of acquired data as an initially unknown environment is explored. To address this, we propose a new approach for inform…

Cited by 74SourceScholar
2022

Adaptive-Resolution Field Mapping Using Gaussian Process Fusion With Integral Kernels

RA-L 2022

Unmanned aerial vehicles are rapidly gaining popularity in many environmental monitoring tasks. A prerequisite for their autonomous operation is the ability to perform efficient and accurate mapping online, given limited on-board resources constraining operation time and computational capacity. To a

Cited by 13SourceScholar
2022

Informative Path Planning for Active Learning in Aerial Semantic Mapping

IROS 2022poster

Semantic segmentation of aerial imagery is an important tool for mapping and earth observation. However, supervised deep learning models for segmentation rely on large amounts of high-quality labelled data, which is labour-intensive and time-consuming to generate. To address this, we propose a new a…

Cited by 11SourcecodeScholar