High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR

High-fidelity 3D models are essential for immersive virtual and augmented reality (VR/AR) applications. However, the performance of current 3D recording devices is limited in several scenarios, such as dim light environments, long-distance measurements, and large-scale objects. Therefore, their appl...

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Main Authors: Yu-Chun Ding, Chia-Yu Chang, Pei-Rong Li, Chao-Tsung Huang, Yung-Chen Lin, Tsung Chen, Wei-Lun Lin, Cheng-Ting Lee, Fan-Yi Lin, Yuan-Hao Huang
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
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Online Access:https://ieeexplore.ieee.org/document/10849544/
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author Yu-Chun Ding
Chia-Yu Chang
Pei-Rong Li
Chao-Tsung Huang
Yung-Chen Lin
Tsung Chen
Wei-Lun Lin
Cheng-Ting Lee
Fan-Yi Lin
Yuan-Hao Huang
author_facet Yu-Chun Ding
Chia-Yu Chang
Pei-Rong Li
Chao-Tsung Huang
Yung-Chen Lin
Tsung Chen
Wei-Lun Lin
Cheng-Ting Lee
Fan-Yi Lin
Yuan-Hao Huang
author_sort Yu-Chun Ding
collection DOAJ
description High-fidelity 3D models are essential for immersive virtual and augmented reality (VR/AR) applications. However, the performance of current 3D recording devices is limited in several scenarios, such as dim light environments, long-distance measurements, and large-scale objects. Therefore, their applicability to indoor scenes is hindered. In this work, we propose a depth map reconstruction system that integrates an RGB-guided depth map super-resolution convolutional neural network (CNN) into a stand-alone Chaos LiDAR depth sensor. This system provides highly accurate depth estimates in various scenarios, particularly for indoor scenes with dim lighting or long distances ranging from 4 m to 6 m. We address two design challenges to maximize the quality of the reconstructed depth map of the system. First, the misalignment across RGB-depth sensors is addressed using a two-stage calibration pipeline. Second, the lack of large-scale real-world LiDAR datasets is addressed by generating a large-scale synthetic dataset and adopting transfer learning. Experimental results show that our proposed system significantly outperforms the commercial RGB-D recording device RealSense D435i in terms of subjective visual perception, precision, and density of depth estimates, making it a promising solution for general indoor scene recording.
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issn 2169-3536
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spelling doaj-art-fb89c3d14640454aba7d737adf8d51742025-01-31T00:01:28ZengIEEEIEEE Access2169-35362025-01-0113191181913110.1109/ACCESS.2025.353262110849544High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDARYu-Chun Ding0https://orcid.org/0000-0001-9004-3597Chia-Yu Chang1Pei-Rong Li2Chao-Tsung Huang3https://orcid.org/0000-0002-9173-520XYung-Chen Lin4Tsung Chen5https://orcid.org/0009-0008-9492-3784Wei-Lun Lin6https://orcid.org/0009-0003-5187-0495Cheng-Ting Lee7Fan-Yi Lin8https://orcid.org/0000-0003-2160-9715Yuan-Hao Huang9https://orcid.org/0000-0001-6781-7312Department of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, Institute of Communications Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, TaiwanDepartment of Electrical Engineering, Institute of Communications Engineering, National Tsing Hua University, Hsinchu, TaiwanHigh-fidelity 3D models are essential for immersive virtual and augmented reality (VR/AR) applications. However, the performance of current 3D recording devices is limited in several scenarios, such as dim light environments, long-distance measurements, and large-scale objects. Therefore, their applicability to indoor scenes is hindered. In this work, we propose a depth map reconstruction system that integrates an RGB-guided depth map super-resolution convolutional neural network (CNN) into a stand-alone Chaos LiDAR depth sensor. This system provides highly accurate depth estimates in various scenarios, particularly for indoor scenes with dim lighting or long distances ranging from 4 m to 6 m. We address two design challenges to maximize the quality of the reconstructed depth map of the system. First, the misalignment across RGB-depth sensors is addressed using a two-stage calibration pipeline. Second, the lack of large-scale real-world LiDAR datasets is addressed by generating a large-scale synthetic dataset and adopting transfer learning. Experimental results show that our proposed system significantly outperforms the commercial RGB-D recording device RealSense D435i in terms of subjective visual perception, precision, and density of depth estimates, making it a promising solution for general indoor scene recording.https://ieeexplore.ieee.org/document/10849544/Depth map super-resolutionChaos LiDARdepth sensing
spellingShingle Yu-Chun Ding
Chia-Yu Chang
Pei-Rong Li
Chao-Tsung Huang
Yung-Chen Lin
Tsung Chen
Wei-Lun Lin
Cheng-Ting Lee
Fan-Yi Lin
Yuan-Hao Huang
High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
IEEE Access
Depth map super-resolution
Chaos LiDAR
depth sensing
title High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
title_full High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
title_fullStr High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
title_full_unstemmed High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
title_short High-Fidelity Depth Map Reconstruction System With RGB-Guided Super Resolution CNN and Cross-Calibrated Chaos LiDAR
title_sort high fidelity depth map reconstruction system with rgb guided super resolution cnn and cross calibrated chaos lidar
topic Depth map super-resolution
Chaos LiDAR
depth sensing
url https://ieeexplore.ieee.org/document/10849544/
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