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There is a prevailing trend to study urban morphology quantitatively thanks to the growing accessibility to various forms of spatial big data, increasing computing power, and use cases benefiting from such information. The methods developed…

计算机视觉与模式识别 · 计算机科学 2021-08-24 Wangyang Chen , Abraham Noah Wu , Filip Biljecki

The worldwide variation in vegetation height is fundamental to the global carbon cycle and central to the functioning of ecosystems and their biodiversity. Geospatially explicit and, ideally, highly resolved information is required to…

计算机视觉与模式识别 · 计算机科学 2022-04-19 Nico Lang , Walter Jetz , Konrad Schindler , Jan Dirk Wegner

High-density object counting in surveillance scenes is challenging mainly due to the drastic variation of object scales. The prevalence of deep learning has largely boosted the object counting accuracy on several benchmark datasets.…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Muming Zhao , Jian Zhang , Chongyang Zhang , Wenjun Zhang

Deep learning based computer vision models are increasingly used by urban planners to support decision making for shaping urban environments. Such models predict how people perceive the urban environment quality in terms of e.g. its safety…

计算机视觉与模式识别 · 计算机科学 2022-08-30 Ruben Sangers , Jan van Gemert , Sander van Cranenburgh

In modern agriculture, usually weeds control consists in spraying herbicides all over the agricultural field. This practice involves significant waste and cost of herbicide for farmers and environmental pollution. One way to reduce the cost…

计算机视觉与模式识别 · 计算机科学 2018-06-01 M. Dian. Bah , Adel Hafiane , Raphael Canals

The classification of streets on road networks has been focused on the vehicular transportational features of streets such as arterials, major roads, minor roads and so forth based on their transportational use. City authorities on the…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Fahad Alhasoun , Marta Gonzalez

We introduce a novel deep learning method for detection of individual trees in urban environments using high-resolution multispectral aerial imagery. We use a convolutional neural network to regress a confidence map indicating the locations…

Deep Convolutional Neural Networks (DCNN) have been proven to be effective for various computer vision problems. In this work, we demonstrate its effectiveness on a continuous object orientation estimation task, which requires prediction of…

计算机视觉与模式识别 · 计算机科学 2017-02-07 Kota Hara , Raviteja Vemulapalli , Rama Chellappa

Up-to-date catalogs of the urban tree population are important for municipalities to monitor and improve quality of life in cities. Despite much research on automation of tree mapping, mainly relying on dedicated airborne LiDAR or…

计算机视觉与模式识别 · 计算机科学 2019-10-08 Steve Branson , Jan Dirk Wegner , David Hall , Nico Lang , Konrad Schindler , Pietro Perona

Assessing the number of street trees is essential for evaluating urban greenery and can help municipalities employ solutions to identify tree-starved streets. It can also help identify roads with different levels of deforestation and…

计算机视觉与模式识别 · 计算机科学 2022-01-19 Arpit Bahety , Rohit Saluja , Ravi Kiran Sarvadevabhatla , Anbumani Subramanian , C. V. Jawahar

Air pollution has long been a serious environmental health challenge, especially in metropolitan cities, where air pollutant concentrations are exacerbated by the street canyon effect and high building density. Whilst accurately monitoring…

机器学习 · 计算机科学 2021-03-29 Yang Han , Qi Zhang , Victor O. K. Li , Jacqueline C. K. Lam

Convolutional neural networks (CNNs) have become popular especially in computer vision in the last few years because they achieved outstanding performance on different tasks, such as image classifications. We propose a nine-layer CNN for…

计算机视觉与模式识别 · 计算机科学 2017-12-05 Christoph Wick , Frank Puppe

Detecting extreme events in large datasets is a major challenge in climate science research. Current algorithms for extreme event detection are build upon human expertise in defining events based on subjective thresholds of relevant…

计算机视觉与模式识别 · 计算机科学 2016-05-05 Yunjie Liu , Evan Racah , Prabhat , Joaquin Correa , Amir Khosrowshahi , David Lavers , Kenneth Kunkel , Michael Wehner , William Collins

Automatic urban land cover classification is a fundamental problem in remote sensing, e.g. for environmental monitoring. The problem is highly challenging, as classes generally have high inter-class and low intra-class variance. Techniques…

计算机视觉与模式识别 · 计算机科学 2018-05-10 Michael Kampffmeyer , Arnt-Børre Salberg , Robert Jenssen

Natural distribution shift causes a deterioration in the perception performance of convolutional neural networks (CNNs). This comprehensive analysis for real-world traffic data addresses: 1) investigating the effect of natural distribution…

计算机视觉与模式识别 · 计算机科学 2024-09-24 Fabian Diet , Moussa Kassem Sbeyti , Michelle Karg

This study investigates the effectiveness of modern Deformable Convolutional Neural Networks (DCNNs) for semantic segmentation tasks, particularly in autonomous driving scenarios with fisheye images. These images, providing a wide field of…

计算机视觉与模式识别 · 计算机科学 2024-10-02 Anam Manzoor , Aryan Singh , Ganesh Sistu , Reenu Mohandas , Eoin Grua , Anthony Scanlan , Ciarán Eising

Deforestation, a major contributor to climate change, poses detrimental consequences such as agricultural sector disruption, global warming, flash floods, and landslides. Conventional approaches to urban street tree inventory suffer from…

计算机视觉与模式识别 · 计算机科学 2024-01-03 Asim Khan , Umair Nawaz , Anwaar Ulhaq , Iqbal Gondal , Sajid Javed

Smart weeding systems to perform plant-specific operations can contribute to the sustainability of agriculture and the environment. Despite monumental advances in autonomous robotic technologies for precision weed management in recent…

计算机视觉与模式识别 · 计算机科学 2021-12-30 Yayun Du , Guofeng Zhang , Darren Tsang , M. Khalid Jawed

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…

计算机视觉与模式识别 · 计算机科学 2022-11-01 Vincent Grondin , Jean-Michel Fortin , François Pomerleau , Philippe Giguère

Grid maps are widely used in robotics to represent obstacles in the environment and differentiating dynamic objects from static infrastructure is essential for many practical applications. In this work, we present a methods that uses a deep…

计算机视觉与模式识别 · 计算机科学 2017-09-12 Florian Piewak , Timo Rehfeld , Michael Weber , J. Marius Zöllner