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This article addresses the image denoising problem in the situations of strong noise. We propose a dual sparse decomposition method. This method makes a sub-dictionary decomposition on the over-complete dictionary in the sparse…

Computer Vision and Pattern Recognition · Computer Science 2017-04-25 Hong Sun , Chen-guang Liu , Cheng-wei Sang

While current multi-frame restoration methods combine information from multiple input images using 2D alignment techniques, recent advances in novel view synthesis are paving the way for a new paradigm relying on volumetric scene…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Thomas Tanay , Aleš Leonardis , Matteo Maggioni

Demosaicking and denoising are the first steps of any camera image processing pipeline and are key for obtaining high quality RGB images. A promising current research trend aims at solving these two problems jointly using convolutional…

Computer Vision and Pattern Recognition · Computer Science 2019-09-11 Thibaud Ehret , Axel Davy , Pablo Arias , Gabriele Facciolo

We consider image denoising using a nonlinear diffusion process, where we solve unsteady partial differential equations with nonlinear coefficients. The noised image is given as an initial condition, and nonlinear coefficients are used to…

Numerical Analysis · Mathematics 2025-05-14 Maria Vasilyeva , Aleksei Krasnikov , Kelum Gajamannage , Mehrube Mehrubeoglu

Retrieving the missing dimension information in acoustic images from 2D forward-looking sonar is a well-known problem in the field of underwater robotics. There are works attempting to retrieve 3D information from a single image which…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Yusheng Wang , Yonghoon Ji , Hiroshi Tsuchiya , Hajime Asama , Atsushi Yamashita

Sparse representation of images under certain transform domain has been playing a fundamental role in image restoration tasks. One such representative method is the widely used wavelet tight frame systems. Instead of adopting fixed filters…

Computer Vision and Pattern Recognition · Computer Science 2016-03-02 Dai-Qiang Chen

Compressive sensing is a method to recover the original image from undersampled measurements. In order to overcome the ill-posedness of this inverse problem, image priors are used such as sparsity in the wavelet domain, minimum…

Computer Vision and Pattern Recognition · Computer Science 2018-12-20 Magauiya Zhussip , Shakarim Soltanayev , Se Young Chun

The audio denoising technique has captured widespread attention in the deep neural network field. Recently, the audio denoising problem has been converted into an image generation task, and deep learning-based approaches have been applied…

Sound · Computer Science 2024-06-14 Junhui Li , Pu Wang , Jialu Li , Youshan Zhang

An accurate initial heading angle is essential for efficient and safe navigation across diverse domains. Unlike magnetometers, gyroscopes can provide accurate heading reference independent of the magnetic disturbances in a process known as…

Robotics · Computer Science 2025-07-30 Gershy Ben-Arie , Daniel Engelsman , Rotem Dror , Itzik Klein

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

Sensors measuring real-life physical processes are ubiquitous in today's interconnected world. These sensors inherently bear noise that often adversely affects performance and reliability of the systems they support. Classic filtering-based…

In this paper, we jointly combine image classification and image denoising, aiming to enhance human perception of noisy images captured by edge devices, like low-light security cameras. In such settings, it is important to retain the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-16 Thomas C Markhorst , Jan C van Gemert , Osman S Kayhan

Many self-supervised denoising approaches have been proposed in recent years. However, these methods tend to overly smooth images, resulting in the loss of fine structures that are essential for medical applications. In this paper, we…

Image and Video Processing · Electrical Eng. & Systems 2025-04-02 Basar Demir , Yikang Liu , Xiao Chen , Eric Z. Chen , Lin Zhao , Boris Mailhe , Terrence Chen , Shanhui Sun

This paper presents a deep learning-based spectral demosaicing technique trained in an unsupervised manner. Many existing deep learning-based techniques relying on supervised learning with synthetic images, often underperform on real-world…

Image and Video Processing · Electrical Eng. & Systems 2023-07-06 Kai Feng , Yongqiang Zhao , Seong G. Kong , Haijin Zeng

Real-world image denoising is an extremely important image processing problem, which aims to recover clean images from noisy images captured in natural environments. In recent years, diffusion models have achieved very promising results in…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Cheng Yang , Lijing Liang , Zhixun Su

Depth perception is considered an invaluable source of information for various vision tasks. However, depth maps acquired using consumer-level sensors still suffer from non-negligible noise. This fact has recently motivated researchers to…

Fluoroscopy is an imaging technique that uses X-ray to obtain a real-time 2D video of the interior of a 3D object, helping surgeons to observe pathological structures and tissue functions especially during intervention. However, it suffers…

Image and Video Processing · Electrical Eng. & Systems 2022-08-31 Ruizhou Liu , Qiang Ma , Zhiwei Cheng , Yuanyuan Lyu , Jianji Wang , S. Kevin Zhou

Depth sensing devices have created various new applications in scientific and commercial research with the advent of Microsoft Kinect and PMD (Photon Mixing Device) cameras. Most of these applications require the depth cameras to be…

Computer Vision and Pattern Recognition · Computer Science 2017-09-11 Ramanpreet Singh Pahwa , Minh N. Do , Tian Tsong Ng , Binh-Son Hua

Hyperspectral images (HSIs) have been widely applied in many fields, such as military, agriculture, and environment monitoring. Nevertheless, HSIs commonly suffer from various types of noise during acquisition. Therefore, denoising is…

Image and Video Processing · Electrical Eng. & Systems 2021-04-07 Yan Gao , Feng Gao , Junyu Dong

With its significant performance improvements, the deep learning paradigm has become a standard tool for modern image denoisers. While promising performance has been shown on seen noise distributions, existing approaches often suffer from…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Hao Chen , Chenyuan Qu , Yu Zhang , Chen Chen , Jianbo Jiao
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