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Adverse weather conditions such as haze and rain corrupt the quality of captured images, which cause detection networks trained on clean images to perform poorly on these images. To address this issue, we propose an unsupervised prior-based…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Vishwanath A. Sindagi , Poojan Oza , Rajeev Yasarla , Vishal M. Patel

Existing research based on deep learning has extensively explored the problem of daytime image dehazing. However, few studies have considered the characteristics of nighttime hazy scenes. There are two distinctions between nighttime and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Xiaofeng Cong , Jie Gui , Jing Zhang , Junming Hou , Hao Shen

Dark Channel Prior (DCP) is a widely recognized traditional dehazing algorithm. However, it may fail in bright region and the brightness of the restored image is darker than hazy image. In this paper, we propose an effective method to…

Computer Vision and Pattern Recognition · Computer Science 2019-04-29 Binghan Li , Wenrui Zhang , Mi Lu

Images captured in hazy and smoky environments suffer from reduced visibility, posing a challenge when monitoring infrastructures and hindering emergency services during critical situations. The proposed work investigates the use of the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Oscar H. Ramírez-Agudelo , Akshay N. Shewatkar , Edoardo Milana , Roland C. Aydin , Kai Franke

Deep learning (DL) methods have achieved state-of-the-art performance in the task of single image rain removal. Most of current DL architectures, however, are still lack of sufficient interpretability and not fully integrated with physical…

Image and Video Processing · Electrical Eng. & Systems 2020-05-05 Hong Wang , Qi Xie , Qian Zhao , Deyu Meng

Rain streaks degrade the image quality and seriously affect the performance of subsequent computer vision tasks, such as autonomous driving, social security, etc. Therefore, removing rain streaks from a given rainy images is of great…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 Fuxiang Tan , YuTing Kong , Yingying Fan , Feng Liu , Daxin Zhou , Hao zhang , Long Chen , Liang Gao , Yurong Qian

Rain severely hampers the visibility of scene objects when images are captured through glass in heavily rainy days. We observe three intriguing phenomenons that, 1) rain is a mixture of raindrops, rain streaks and rainy haze; 2) the depth…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Yiyang Shen , Yidan Feng , Sen Deng , Dong Liang , Jing Qin , Haoran Xie , Mingqiang Wei

AI-for-science approaches have been applied to solve scientific problems (e.g., nuclear fusion, ecology, genomics, meteorology) and have achieved highly promising results. Spatial precipitation downscaling is one of the most important…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Xuanhong Chen , Kairui Feng , Naiyuan Liu , Bingbing Ni , Yifan Lu , Zhengyan Tong , Ziang Liu

Raindrops adhered to a glass window or camera lens can severely hamper the visibility of a background scene and degrade an image considerably. In this paper, we address the problem by visually removing raindrops, and thus transforming a…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Rui Qian , Robby T. Tan , Wenhan Yang , Jiajun Su , Jiaying Liu

Haze removal has been a very challenging problem due to its ill-posedness, which is more ill-posed if the input data is only a single hazy image. In this paper, we present a new approach for removing haze from a single input image. The…

Computer Vision and Pattern Recognition · Computer Science 2016-01-25 Wei Wang , Chuanjiang He

To alleviate the adverse effect of rain streaks in image processing tasks, CNN-based single image rain removal methods have been recently proposed. However, the performance of these deep learning methods largely relies on the covering range…

Image and Video Processing · Electrical Eng. & Systems 2020-05-20 Hong Wang , Yichen Wu , Qi Xie , Qian Zhao , Yong Liang , Deyu Meng

We present an image dehazing algorithm with high quality, wide application, and no data training or prior needed. We analyze the defects of the original dehazing model, and propose a new and reliable dehazing reconstruction and dehazing…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Zheyan Jin , Shiqi Chen , Huajun Feng , Zhihai Xu , Qi Li , Yueting Chen

Scattering and attenuation of light in no-homogeneous imaging media or inconsistent light intensity will cause insufficient contrast and color distortion in the collected images, which limits the developments such as vision-driven smart…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Yuxu Lu , Dong Yang , Yuan Gao , Ryan Wen Liu , Jun Liu , Yu Guo

We propose a novel deep learning method for shadow removal. Inspired by physical models of shadow formation, we use a linear illumination transformation to model the shadow effects in the image that allows the shadow image to be expressed…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Hieu Le , Dimitris Samaras

Augmented Reality (AR) applications necessitates methods of inserting needed objects into scenes captured by cameras in a way that is coherent with the surroundings. Common AR applications require the insertion of predefined 3D objects with…

Computer Vision and Pattern Recognition · Computer Science 2024-01-29 Fouad Afiouni , Mohamad Fakih , Joey Sleiman

Image composition plays a common but important role in photo editing. To acquire photo-realistic composite images, one must adjust the appearance and visual style of the foreground to be compatible with the background. Existing deep…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Jun Ling , Han Xue , Li Song , Rong Xie , Xiao Gu

As a common weather, rain streaks adversely degrade the image quality. Hence, removing rains from an image has become an important issue in the field. To handle such an ill-posed single image deraining task, in this paper, we specifically…

Image and Video Processing · Electrical Eng. & Systems 2022-12-27 Hong Wang , Qi Xie , Qian Zhao , Yuexiang Li , Yong Liang , Yefeng Zheng , Deyu Meng

While image dehazing has advanced substantially in the past decade, most efforts have focused on short-range scenarios, leaving long-range haze removal under-explored. As distance increases, intensified scattering leads to severe haze and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Yi Li , Xiaoxiong Wang , Jiawei Wang , Yi Chang , Kai Cao , Luxin Yan

LiDAR sensors are critical for autonomous driving and robotics applications due to their ability to provide accurate range measurements and their robustness to lighting conditions. However, airborne particles, such as fog, rain, snow, and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-11 Chu Chen , Yanqi Ma , Bingcheng Dong , Junjie Cao

Removing haze from real-world images is challenging due to unpredictable weather conditions, resulting in the misalignment of hazy and clear image pairs. In this paper, we propose an innovative dehazing framework that operates under…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Junkai Fan , Fei Guo , Jianjun Qian , Xiang Li , Jun Li , Jian Yang