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In the industry, the value of wood-logs strongly depends on their internal structure and more specifically on the knots' distribution inside the trees. As of today, CT-scanners are the prevalent tool to acquire accurate images of the trees…

Computer Vision and Pattern Recognition · Computer Science 2020-10-08 Mejri Mohamed , Antoine Richard , Cedric Pradalier

The quality of a wood log in the wood industry depends heavily on the presence of both outer and inner defects, including inner knots that are a result of the growth of tree branches. Today, locating the inner knots require the use of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Salim Khazem , Jeremy Fix , Cédric Pradalier

Our demonstration shows a system that estimates internal body structures from 3D surface models using deep convolutional neural networks trained on CT (computed tomography) images of the human body. To take pictures of structures inside the…

Computer Vision and Pattern Recognition · Computer Science 2018-01-08 Takumi Moriya , Kazuyuki Saito , Hiroya Tanaka

In this paper, we present a deep-learning based method for estimating the 3D structure of a bone from a pair of 2D X-ray images. Our triplet loss-trained neural network selects the most closely matching 3D bone shape from a predefined set…

Computer Vision and Pattern Recognition · Computer Science 2020-10-12 Jana Čavojská , Julian Petrasch , Nicolas J. Lehmann , Agnès Voisard , Peter Böttcher

Identification of tree species plays a key role in forestry related tasks like forest conservation, disease diagnosis and plant production. There had been a debate regarding the part of the tree to be used for differentiation, whether it…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Sahil Faizal

Tree species identification using bark images is a challenging problem that could prove useful for many forestry related tasks. However, while the recent progress in deep learning showed impressive results on standard vision problems, a…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Mathieu Carpentier , Philippe Giguère , Jonathan Gaudreault

The stability and ability of an ecosystem to withstand climate change is directly linked to its biodiversity. Dead trees are a key indicator of overall forest health, housing one-third of forest ecosystem biodiversity, and constitute 8%of…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Jacquelyn A. Shelton , Przemyslaw Polewski , Wei Yao , Marco Heurich

This study introduces a new method of visualizing complex tree structured objects. The usefulness of this method is illustrated in the context of detecting unexpected features in a data set of very large trees. The major contribution is a…

Applications · Statistics 2012-02-14 Burcu Aydin , Gabor Pataki , Haonan Wang , Alim Ladha , Elizabeth Bullitt , J. S. Marron

Tree perception is an essential building block toward autonomous forestry operations. Current developments generally consider input data from lidar sensors to solve forest navigation, tree detection and diameter estimation problems. Whereas…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Vincent Grondin , Jean-Michel Fortin , François Pomerleau , Philippe Giguère

Vision-based segmentation in forested environments is a key functionality for autonomous forestry operations such as tree felling and forwarding. Deep learning algorithms demonstrate promising results to perform visual tasks such as object…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Vincent Grondin , François Pomerleau , Philippe Giguère

Accurate and consistent methods for counting trees based on remote sensing data are needed to support sustainable forest management, assess climate change mitigation strategies, and build trust in tree carbon credits. Two-dimensional remote…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Lei Li , Tianfang Zhang , Zhongyu Jiang , Cheng-Yen Yang , Jenq-Neng Hwang , Stefan Oehmcke , Dimitri Pierre Johannes Gominski , Fabian Gieseke , Christian Igel

Computer Aided Diagnosis has emerged as an indispensible technique for validating the opinion of radiologists in CT interpretation. This paper presents a deep 3D Convolutional Neural Network (CNN) architecture for automated CT scan-based…

Image and Video Processing · Electrical Eng. & Systems 2019-06-05 Sumita Mishra , Naresh Kumar Chaudhary , Pallavi Asthana , Anil Kumar

Early diagnosis of interstitial lung diseases is crucial for their treatment, but even experienced physicians find it difficult, as their clinical manifestations are similar. In order to assist with the diagnosis, computer-aided diagnosis…

Computer Vision and Pattern Recognition · Computer Science 2016-12-13 Stergios Christodoulidis , Marios Anthimopoulos , Lukas Ebner , Andreas Christe , Stavroula Mougiakakou

General graphs are difficult for learning due to their irregular structures. Existing works employ message passing along graph edges to extract local patterns using customized graph kernels, but few of them are effective for the integration…

Computer Vision and Pattern Recognition · Computer Science 2020-07-23 Yecheng Lyu , Ming Li , Xinming Huang , Ulkuhan Guler , Patrick Schaumont , Ziming Zhang

Pulmonary diseases rank prominently among the principal causes of death worldwide. Curing them will require, among other things, a better understanding of the complex 3D tree-shaped structures within the pulmonary system, such as airways,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-21 Kangxian Xie , Jiancheng Yang , Donglai Wei , Ziqiao Weng , Pascal Fua

Deep convolutional neural networks are powerful tools for learning visual representations from images. However, designing efficient deep architectures to analyse volumetric medical images remains challenging. This work investigates…

Computer Vision and Pattern Recognition · Computer Science 2017-07-10 Wenqi Li , Guotai Wang , Lucas Fidon , Sebastien Ourselin , M. Jorge Cardoso , Tom Vercauteren

It is widely recognized that the deeper networks or networks with more feature maps have better performance. Existing studies mainly focus on extending the network depth and increasing the feature maps of networks. At the same time,…

Computer Vision and Pattern Recognition · Computer Science 2018-11-27 Shenlong Lou , Yan Luo , Qiancong Fan , Feng Chen , Yiping Chen , Cheng Wang , Jonathan Li

The pattern analysis of tree structure holds significant scientific value for genetic breeding and forestry management. The current trunk and branch extraction technologies are mainly LiDAR-based or UAV-based. The former approaches obtain…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Chenyang Fan , Xujie Zhu , Taige Luo , Sheng Xu , Zhulin Chen , Hongxin Yang

A building self-shading shape impacts substantially on the amount of direct sunlight received by the building and contributes significantly to building operational energy use, in addition to other major contributing variables, such as…

Machine Learning · Computer Science 2024-07-16 Farnaz Nazari , Wei Yan

Reliable large-scale data on the state of forests is crucial for monitoring ecosystem health, carbon stock, and the impact of climate change. Current knowledge of tree species distribution relies heavily on manual data collection in the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Hongjin Lin , Matthew Nazari , Derek Zheng
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