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Atmospheric turbulence can significantly degrade the quality of images acquired by long-range imaging systems by causing spatially and temporally random fluctuations in the index of refraction of the atmosphere. Variations in the refractive…

Image and Video Processing · Electrical Eng. & Systems 2022-07-08 Rajeev Yasarla , Vishal M. Patel

Ground based long-range passive imaging systems often suffer from degraded image quality due to a turbulent atmosphere. While methods exist for removing such turbulent distortions, many are limited to static sequences which cannot be…

Image and Video Processing · Electrical Eng. & Systems 2020-09-02 Zhiyuan Mao , Nicholas Chimitt , Stanley Chan

Multispectral oriented object detection faces challenges due to both inter-modal and intra-modal discrepancies. Recent studies often rely on transformer-based models to address these issues and achieve cross-modal fusion detection. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Minghang Zhou , Tianyu Li , Chaofan Qiao , Dongyu Xie , Guoqing Wang , Ningjuan Ruan , Lin Mei , Yang Yang

Image restoration algorithms for atmospheric turbulence are known to be much more challenging to design than traditional ones such as blur or noise because the distortion caused by the turbulence is an entanglement of spatially varying…

Image and Video Processing · Electrical Eng. & Systems 2022-07-26 Zhiyuan Mao , Ajay Jaiswal , Zhangyang Wang , Stanley H. Chan

Atmospheric turbulence degrades the performance of free-space optical (FSO) communication and remote sensing systems by introducing phase and intensity distortions. While a majority of research focuses on mitigating these effects to ensure…

In this paper, we introduce DiffusionMat, a novel image matting framework that employs a diffusion model for the transition from coarse to refined alpha mattes. Diverging from conventional methods that utilize trimaps merely as loose…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Yangyang Xu , Shengfeng He , Wenqi Shao , Kwan-Yee K. Wong , Yu Qiao , Ping Luo

Atmospheric turbulence significantly affects imaging systems which use light that has propagated through long atmospheric paths. Images captured under such condition suffer from a combination of geometric deformation and space varying blur.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Rajeev Yasarla , Vishal M Patel

Face and person recognition have recently achieved remarkable success under challenging scenarios, such as off-pose and cross-spectrum matching. However, long-range recognition systems are often hindered by atmospheric turbulence, leading…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Kshitij Nikhal , Benjamin S. Riggan

The objective of dense material segmentation is to identify the material categories for every image pixel. Recent studies adopt image patches to extract material features. Although the trained networks can improve the segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Yuwen Heng , Srinandan Dasmahapatra , Hansung Kim

A variety of neural networks architectures are being studied to tackle blur in images and videos caused by a non-steady camera and objects being captured. In this paper, we present an overview of these existing networks and perform…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Tushar Jain , Madeline Lubien , Jerome Gilles

Reliable 3D object detection is fundamental to autonomous driving, and multimodal fusion algorithms using cameras and LiDAR remain a persistent challenge. Cameras provide dense visual cues but ill posed depth; LiDAR provides a precise 3D…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Venkatraman Narayanan , Bala Sai , Rahul Ahuja , Pratik Likhar , Varun Ravi Kumar , Senthil Yogamani

In this paper, we present DAT, a Depth-Aware Transformer framework designed for camera-based 3D detection. Our model is based on observing two major issues in existing methods: large depth translation errors and duplicate predictions along…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Hao Zhang , Hongyang Li , Ailing Zeng , Feng Li , Shilong Liu , Xingyu Liao , Lei Zhang

Anomaly detection in time series is essential for industrial monitoring and environmental sensing, yet distinguishing anomalies from complex patterns remains challenging. Existing methods like the Anomaly Transformer and DCdetector have…

Machine Learning · Computer Science 2025-05-20 Abdellah Zakaria Sellam , Ilyes Benaissa , Abdelmalik Taleb-Ahmed , Luigi Patrono , Cosimo Distante

Existing object detectors encounter challenges in handling domain shifts between training and real-world data, particularly under poor visibility conditions like fog and night. Cutting-edge cross-domain object detection methods use…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Kaiwen Wang , Yinzhe Shen , Martin Lauer

Atmospheric turbulence deteriorates the quality of images captured by long-range imaging systems by introducing blur and geometric distortions to the captured scene. This leads to a drastic drop in performance when computer vision…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Nithin Gopalakrishnan Nair , Kangfu Mei , Vishal M. Patel

End-to-end multi-object tracking (MOT) methods have recently achieved remarkable progress by unifying detection and association within a single framework. Despite their strong detection performance, these methods suffer from relatively low…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Yuqing Shao , Yuchen Yang , Rui Yu , Weilong Li , Xu Guo , Huaicheng Yan , Wei Wang , Xiao Sun

Diffusion models (DMs) embark a new era of generative modeling and offer more opportunities for efficient generating high-quality and realistic data samples. However, their widespread use has also brought forth new challenges in model…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Jingyao Xu , Yuetong Lu , Yandong Li , Siyang Lu , Dongdong Wang , Xiang Wei

In autonomous driving, LiDAR point-clouds and RGB images are two major data modalities with complementary cues for 3D object detection. However, it is quite difficult to sufficiently use them, due to large inter-modal discrepancies. To…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Yanan Zhang , Jiaxin Chen , Di Huang

Personalizing diffusion models using limited data presents significant challenges, including overfitting, loss of prior knowledge, and degradation of text alignment. Overfitting leads to shifts in the noise prediction distribution,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 JungWoo Chae , Jiyoon Kim , JaeWoong Choi , Kyungyul Kim , Sangheum Hwang

In many applications of long-range imaging, we are faced with a scenario where a person appearing in the captured imagery is often degraded by atmospheric turbulence. However, restoring such degraded images for face verification is…

Computer Vision and Pattern Recognition · Computer Science 2023-07-26 Kangfu Mei , Vishal M. Patel