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Shadow detection is a fundamental and challenging task, since it requires an understanding of global image semantics and there are various backgrounds around shadows. This paper presents a novel network for shadow detection by analyzing…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Xiaowei Hu , Lei Zhu , Chi-Wing Fu , Jing Qin , Pheng-Ann Heng

Semantic segmentation and semantic edge detection can be seen as two dual problems with close relationships in computer vision. Despite the fast evolution of learning-based 3D semantic segmentation methods, little attention has been drawn…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Zeyu Hu , Mingmin Zhen , Xuyang Bai , Hongbo Fu , Chiew-lan Tai

The wide field of view (WFV) imaging system onboard the Chinese GaoFen-1 (GF-1) optical satellite has a 16-m resolution and four-day revisit cycle for large-scale Earth observation. The advantages of the high temporal-spatial resolution and…

Computer Vision and Pattern Recognition · Computer Science 2017-02-07 Zhiwei Li , Huanfeng Shen , Huifang Li , Guisong Xia , Paolo Gamba , Liangpei Zhang

Image shadow removal is a crucial task in computer vision. In real-world scenes, shadows alter image color and brightness, posing challenges for perception and texture recognition. Traditional and deep learning methods often overlook the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Jiajia Liang

This paper presents a novel method for real-time nighttime cloud detection, tracking, and prediction using all-sky cameras, aimed at enhancing the efficiency of ground-based robotic telescopes. Ground-based telescopes are vulnerable to…

Instrumentation and Methods for Astrophysics · Physics 2025-07-30 Sebastian Buntin , Chris M. Copperwheat , Helen E. Jermak

Video segmentation consists of a frame-by-frame selection process of meaningful areas related to foreground moving objects. Some applications include traffic monitoring, human tracking, action recognition, efficient video surveillance, and…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Daniel F. S. Santos , Rafael G. Pires , Danilo Colombo , João P. Papa

Technology to recognize the type of component represented by a point cloud is required in the reconstruction process of an as-built model of a process plant based on laser scanning. The reconstruction process of a process plant through…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Hyungki Kim , Duhwan Mun

Effective shadow removal is pivotal in enhancing the visual quality of images in various applications, ranging from computer vision to digital photography. During the last decades physics and machine learning -based methodologies have been…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Eirini Cholopoulou , Dimitrios E. Diamantis , Dimitra-Christina C. Koutsiou , Dimitris K. Iakovidis

Scene understanding of high resolution aerial images is of great importance for the task of automated monitoring in various remote sensing applications. Due to the large within-class and small between-class variance in pixel values of…

Computer Vision and Pattern Recognition · Computer Science 2020-02-28 Foivos I. Diakogiannis , François Waldner , Peter Caccetta , Chen Wu

Deep learning approaches to 3D shape segmentation are typically formulated as a multi-class labeling problem. Existing models are trained for a fixed set of labels, which greatly limits their flexibility and adaptivity. We opt for top-down…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Fenggen Yu , Kun Liu , Yan Zhang , Chenyang Zhu , Kai Xu

Automatic building extraction from aerial imagery has several applications in urban planning, disaster management, and change detection. In recent years, several works have adopted deep convolutional neural networks (CNNs) for building…

Image and Video Processing · Electrical Eng. & Systems 2020-01-22 Clint Sebastian , Raffaele Imbriaco , Egor Bondarev , Peter H. N. de With

State-of-the-art methods for large-scale driving-scene LiDAR segmentation often project the point clouds to 2D space and then process them via 2D convolution. Although this corporation shows the competitiveness in the point cloud, it…

Computer Vision and Pattern Recognition · Computer Science 2020-11-20 Xinge Zhu , Hui Zhou , Tai Wang , Fangzhou Hong , Yuexin Ma , Wei Li , Hongsheng Li , Dahua Lin

The autonomous car must recognize the driving environment quickly for safe driving. As the Light Detection And Range (LiDAR) sensor is widely used in the autonomous car, fast semantic segmentation of LiDAR point cloud, which is the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Jaehyun Park , Chansoo Kim , Kichun Jo

Point cloud semantic segmentation plays an essential role in autonomous driving, providing vital information about drivable surfaces and nearby objects that can aid higher level tasks such as path planning and collision avoidance. While…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Ozan Unal , Luc Van Gool , Dengxin Dai

Cloud removal is a relevant topic in Remote Sensing as it fosters the usability of high-resolution optical images for Earth monitoring and study. Related techniques have been analyzed for years with a progressively clearer view of the…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Alessandro Sebastianelli , Artur Nowakowski , Erika Puglisi , Maria Pia Del Rosso , Jamila Mifdal , Fiora Pirri , Pierre Philippe Mathieu , Silvia Liberata Ullo

Instance shadow detection, crucial for applications such as photo editing and light direction estimation, has undergone significant advancements in predicting shadow instances, object instances, and their associations. The extension of this…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Zhenghao Xing , Tianyu Wang , Xiaowei Hu , Haoran Wu , Chi-Wing Fu , Pheng-Ann Heng

Cloud removal is an essential task in remote sensing data analysis. As the image sensors are distant from the earth ground, it is likely that part of the area of interests is covered by cloud. Moreover, the atmosphere in between creates a…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Yi Guo , Feng Li , Zhuo Wang

Adverse weather conditions can negatively affect LiDAR-based object detectors. In this work, we focus on the phenomenon of vehicle gas exhaust condensation in cold weather conditions. This everyday effect can influence the estimation of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Aldi Piroli , Vinzenz Dallabetta , Marc Walessa , Daniel Meissner , Johannes Kopp , Klaus Dietmayer

For autonomous driving, radar sensors provide superior reliability regardless of weather conditions as well as a significantly high detection range. State-of-the-art algorithms for environment perception based on radar scans build up on…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Marco Braun , Alessandro Cennamo , Markus Schoeler , Kevin Kollek , Anton Kummert

While cloud/sky image segmentation has extensive real-world applications, a large amount of labelled data is needed to train a highly accurate models to perform the task. Scarcity of such volumes of cloud/sky images with corresponding…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Mayank Jain , Conor Meegan , Soumyabrata Dev
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