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Images taken through window glass are often degraded by contaminants adhered to the glass surfaces. Such contaminants cause occlusions that attenuate the incoming light and scatter stray light towards the camera. Most of existing deep…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Qiang Li , Yuanming Cao

This paper presents a generative adversarial network (GAN) based approach for radar image enhancement. Although radar sensors remain robust for operations under adverse weather conditions, their application in autonomous vehicles (AVs) is…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Thakshila Thilakanayake , Oscar De Silva , Thumeera R. Wanasinghe , George K. Mann , Awantha Jayasiri

Solar energy is one of the most abundant and tapped sources of renewable energies with enormous future potential. Solar panel output can vary widely with factors like intensity, temperature, dirt, debris and so on affecting it. We have…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Abishek Karthik , Sreya Mynampati , Pandiyaraju V

Ground-based whole sky imagers (WSIs) can provide localized images of the sky of high temporal and spatial resolution, which permits fine-grained cloud observation. In this paper, we show how images taken by WSIs can be used to estimate…

Instrumentation and Methods for Astrophysics · Physics 2017-04-07 Soumyabrata Dev , Florian M. Savoy , Yee Hui Lee , Stefan Winkler

Marine snow, the floating particles in underwater images, severely degrades the visibility and performance of human and machine vision systems. This paper proposes a novel method to reduce the marine snow interference using deep learning…

Image and Video Processing · Electrical Eng. & Systems 2023-11-28 Fernando Galetto , Guang Deng

In recent years, deep learning based methods have made significant progress in rain-removing. However, the existing methods usually do not have good generalization ability, which leads to the fact that almost all of existing methods have a…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Yinglong Wang , Haokui Zhang , Yu Liu , Qinfeng Shi , Bing Zeng

Rain removal in images is an important task in computer vision filed and attracting attentions of more and more people. In this paper, we address a non-trivial issue of removing visual effect of rain streak from a single image. Differing…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Yulong Fan , Rong Chen , Bo Li

Shadows are a prevalent problem in remote sensing imagery (RSI), degrading visual quality and severely limiting the performance of downstream tasks like object detection and semantic segmentation. Most prior works treat shadow detection and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Zi-Yang Bo , Wei Lu , Hongruixuan Chen , Si-Bao Chen , Bin Luo

We present new deep near-infrared images of dark clouds in the Perseus molecular complex. These images show beautiful extended emission which we model as scattered ambient starlight and name ``cloudshine''. The brightness and color…

Astrophysics · Physics 2009-11-13 Jonathan B. Foster , Alyssa A. Goodman

Point clouds captured by scanning sensors are often perturbed by noise, which have a highly negative impact on downstream tasks (e.g. surface reconstruction and shape understanding). Previous works mostly focus on training neural networks…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Junsheng Zhou , Xingyu Shi , Haichuan Song , Yi Fang , Yu-Shen Liu , Zhizhong Han

Point cloud source data for surface reconstruction is usually contaminated with noise and outliers. To overcome this deficiency, a density-based point cloud denoising method is presented to remove outliers and noisy points. First,…

Computer Vision and Pattern Recognition · Computer Science 2016-02-18 Faisal Zaman , Ya Ping Wong , Boon Yian Ng

Removing rain streaks from a single image continues to draw attentions today in outdoor vision systems. In this paper, we present an efficient method to remove rain streaks. First, the location map of rain pixels needs to be known as…

Computer Vision and Pattern Recognition · Computer Science 2018-12-20 Yinglong Wang , Shuaicheng Liu , Bing Zeng

Low light conditions in aerial images adversely affect the performance of several vision based applications. There is a need for methods that can efficiently remove the low light attributes and assist in the performance of key vision tasks.…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Prateek Garg , Murari Mandal , Pratik Narang

We present a new generic method for shadow-aware multi-view satellite photogrammetry of Earth Observation scenes. Our proposed method, the Shadow Neural Radiance Field (S-NeRF) follows recent advances in implicit volumetric representation…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Dawa Derksen , Dario Izzo

Facial landmark detection is a very fundamental and significant vision task with many important applications. In practice, facial landmark detection can be affected by a lot of natural degradations. One of the most common and important…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Lan Fu , Qing Guo , Felix Juefei-Xu , Hongkai Yu , Wei Feng , Yang Liu , Song Wang

Satellite image time series in the optical and infrared spectrum suffer from frequent data gaps due to cloud cover, cloud shadows, and temporary sensor outages. It has been a long-standing problem of remote sensing research how to best…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Corinne Stucker , Vivien Sainte Fare Garnot , Konrad Schindler

In this paper we propose an attentive recurrent generative adversarial network (ARGAN) to detect and remove shadows in an image. The generator consists of multiple progressive steps. At each step a shadow attention detector is firstly…

Computer Vision and Pattern Recognition · Computer Science 2019-08-06 Bin Ding , Chengjiang Long , Ling Zhang , Chunxia Xiao

Rain removal from a single image is a challenge which has been studied for a long time. In this paper, a novel convolutional neural network based on wavelet and dark channel is proposed. On one hand, we think that rain streaks correspond to…

Computer Vision and Pattern Recognition · Computer Science 2018-01-23 Liang Shen , Zihan Yue , Quan Chen , Fan Feng , Jie Ma

Medical ultrasound is widely used technique for diagnosing internal organs. As common artifacts, shadows often appear in ultrasound images. Detecting such shadows is curious because they prevent accurate diagnosis. In this paper, we propose…

Image and Video Processing · Electrical Eng. & Systems 2019-08-08 Suguru Yasutomi , Tatsuya Arakaki , Ryuji Hamamoto

When imaging through a semi-reflective medium such as glass, the reflection of another scene can often be found in the captured images. It degrades the quality of the images and affects their subsequent analyses. In this paper, a novel deep…

Image and Video Processing · Electrical Eng. & Systems 2022-08-11 Tingtian Li , Yuk-Hee Chan , Daniel P. K. Lun