Searched for: subject%3A%223D%255C+Reconstruction%22
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El Coudi El Amrani, Nafie (author)
Neural Radiance Fields (NeRFs) have demonstrated remarkable capabilities in photo-realistic 3D reconstruction. NeRFs often take as input posed images where the camera poses come from either off-the-shelf S\textit{f}M or online optimization together with NeRFs. However, we find that both strategies yield suboptimal results in recovering camera...
master thesis 2023
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Ibrahimli, N. (author), Ledoux, H. (author), Kooij, J.F.P. (author), Nan, L. (author)
We propose an enhancement module called depth discontinuity learning (DDL) for learning-based multi-view stereo (MVS) methods. Traditional methods are known for their accuracy but struggle with completeness. While recent learning-based methods have improved completeness at the cost of accuracy, our DDL approach aims to improve accuracy while...
journal article 2023
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Hu, X. (author), Martin, H.A. (author), Poelma, René H. (author), Huang, J.L. (author), Rijckevorsel, H. (author), Scholten, H. (author), Smits, E.C.P. (author), van Driel, W.D. (author), Zhang, Kouchi (author)
Resin-reinforced silver (Ag) sintering material is an effective and highly reliable solution for power electronics packaging. The hybrid material’s process parameters strongly influence its microstructure and pose a significant challenge in estimating its effective properties as a thin interconnect layer. This research demonstrates a novel 3D...
conference paper 2023
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Wang, Chuhan (author)
3D scene reconstruction is a common computer vision task with many applications. The synthesized virtual environments are beneficial for many downstream applications such as 3D modeling, building inspection, virtual reality, etc. As conventional scene reconstruction methods often require expensive data collections and prior information on the...
master thesis 2022
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CHEN, ENPU (author)
In inspection and display scenarios, reconstructing and rendering the entire surface of a building is a critical step in presenting the overall condition of the building. In building reconstruction, most works are based on point clouds because of their enhanced availability. In recent years, neural radiance fields (NeRF) have become a common...
master thesis 2022
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Jiang, Yingfeng (author)
This thesis presents a method for personnel activities observation, i.e., 3D human pose estimation and tracking, in a Catheterization Laboratory(Cath Lab). We mount five cameras from different angles in the Cath Lab, where surgeons and assistants are in similar clothes while doing surgery. Accurate 3D human pose estimation is the cornerstone of...
master thesis 2022
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Wang, Linjun (author)
3D building models play an important role in many real-world applications. Different models are suitable for different application scenarios based on their levels of detail. LOD3 models with facade details are crucial for many applications, such as virtual reality and urban simulation. Currently, 3D building models with lower LOD are largely...
master thesis 2022
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Buijs, Teun (author)
The tactile internet can be described as the next step of the internet. It can empower people, adding physical interactions to what normally is just an audiovisual experience.<br/>It however does need ultra-low latency. <br/>A solution to having delays can be found in environment simulation.<br/>This paper describes a way to find the correct...
bachelor thesis 2022
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Chen, Z. (author), Ledoux, H. (author), Khademi, S. (author), Nan, L. (author)
While three-dimensional (3D) building models play an increasingly pivotal role in many real-world applications, obtaining a compact representation of buildings remains an open problem. In this paper, we present a novel framework for reconstructing compact, watertight, polygonal building models from point clouds. Our framework comprises three...
journal article 2022
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Xu, Yabin (author), Nan, L. (author), Zhou, Laishui (author), Wang, Jun (author), Wang, C.C. (author)
Reconstruction of high-fidelity 3D objects or scenes is a fundamental research problem. Recent advances in RGB-D fusion have demonstrated the potential of producing 3D models from consumer-level RGB-D cameras. However, due to the discrete nature and limited resolution of their surface representations (e.g., point or voxel based), existing...
journal article 2022
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Tajdari, Mahsa (author), Tajdari, F. (author), Shirzadian, Pouyan (author), Pawar, Aishwarya (author), Wardak, Mirwais (author), Saha, Sourav (author), Huysmans, T. (author), Song, Y. (author), Zhang, Yongjie Jessica (author)
Predicting pediatric spinal deformity (PSD) from X-ray images collected on the patient’s initial visit is a challenging task. This work builds on our previous method and provides a novel bio-informed framework based on a mechanistic machine learning technique with dynamic patient-specific parameters to predict PSD. We provide a geometry-based...
journal article 2022
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ter Kuile, David (author)
As robots are becoming a more integral part in our daily lives, it is important to ensure they work in a safe and efficient manner. A large part of perceiving the environment is done through robot vision. Research in computer vision and machine learning lead to great improvements in the past decades and robots are able to outperform humans on...
master thesis 2021
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Markhorst, Thomas (author)
Proper maintenance and inspection of aircraft and their engines is important for society. These engine inspections are performed using borescopes of which the footage is manually analysed. Having the opportunity to reconstruct a 3D model of the rotors would ease the inspection and introduce the possibility to automate the process. Monocular SLAM...
bachelor thesis 2021
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Chen, Zhaiyu (author)
Three-dimensional building models play a pivotal role in shaping the digital twin of our world. With the advance of sensing technologies, unprecedented data acquisition capabilities on capturing the built environment have surfaced, with photogrammetry and light detection and ranging being the two important sources, both of which can acquire...
master thesis 2021
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Nonnemaker, Alec (author)
To aid in damage assessment, creating 3D reconstruction from borescope videos of jet engines could be very beneficial. However, jet engines often have shiny and non-textured surfaces, and the performance of 3D reconstruction methods is unknown in this case. This paper aims to qualitatively and quantitatively evaluate Structure from Motion (SfM)...
bachelor thesis 2021
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Lieuw A Soe, Devin (author)
With 3D reconstruction from borescope videos of jet engines, inspections can be made more efficient. Being able to reconstruct 3D models of the jet engines potentially contributes to making the inspections autonomous. Methods that will be used for this reconstruction require to be evaluated to ensure the accuracy of the 3D models that they...
bachelor thesis 2021
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Rosenthal, Jean Claude (author), Schneider, Armin (author), Wisotzky, Eric L. (author), Meij, S.E.P. (author), van den Dobbelsteen, J.J. (author), Arens, Philipp (author), Uecker, Florian C. (author)
Existing challenges in surgical education (See one, do one, teach one) as well as the Covid-19 pandemic make it necessary to develop new ways for surgical training. This is also crucial for the dissemination of new technological developments. As today's live transmissions of surgeries to remote locations always come with high information loss...
journal article 2021
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Tongel, Alexander Van (author), Wilde, Lieven De (author), Shimamura, Yasunori (author), Sijbers, Jan (author), Huysmans, T. (author)
Current classifications of midshaft clavicle fractures are based on radiography. The aim of the study was to evaluate the fracture pattern of clavicle fractures using 3-dimensional computed tomography (3D CT). A retrospective analysis was performed on CT scans of 65 acute clavicle fractures. Using quantitative 3D CT reconstruction techniques,...
journal article 2021
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Maciel, Luiz (author), Marroquim, Ricardo (author), Vieira, Marcelo (author), Ribeiro, Kevyn (author), Alho, Alexandre (author)
We present a method to recover the 3D flying shape of a sail using passive markers. In the navigation and naval architecture domain, retrieving the sail shape may be of immense value to confirm or contest simulation results, and to aid the design of new optimal sails. Our acquisition setup is very simple and low-cost, as it is only necessary...
journal article 2021
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te Hofste, Merel (author)
The problem of quantifying the growth dynamics of plants from time-lapse images is important for determining variety-specific characteristics and subsequent breeding. The goal of this paper is to address this problem and reconstruct three-dimensional images such that growth becomes visible. To this end, data of growing plants were collected in...
master thesis 2020
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