English
Related papers

Related papers: Single Image Defocus Deblurring Using Kernel-Shari…

200 papers

Blind image deblurring plays a very important role in many vision and multimedia applications. Most existing works tend to introduce complex priors to estimate the sharp image structures for blur kernel estimation. However, it has been…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Risheng Liu , Yi He , Shichao Cheng , Xin Fan , Zhongxuan Luo

The single image super-resolution task is one of the most examined inverse problems in the past decade. In the recent years, Deep Neural Networks (DNNs) have shown superior performance over alternative methods when the acquisition process…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Shady Abu Hussein , Tom Tirer , Raja Giryes

Traditional works have shown that patches in a natural image tend to redundantly recur many times inside the image, both within the same scale, as well as across different scales. Make full use of these multi-scale information can improve…

Computer Vision and Pattern Recognition · Computer Science 2017-07-25 Wuzhen Shi , Feng Jiang , Debin Zhao

Using diffusion models to solve inverse problems is a growing field of research. Current methods assume the degradation to be known and provide impressive results in terms of restoration quality and diversity. In this work, we leverage the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Charles Laroche , Andrés Almansa , Eva Coupete

Removing spatially variant motion blur from a blurry image is a challenging problem as blur sources are complicated and difficult to model accurately. Recent progress in deep neural networks suggests that kernel free single image deblurring…

Computer Vision and Pattern Recognition · Computer Science 2019-11-26 Shuang Zhang , Ada Zhen , Robert L. Stevenson

Despite significant progress toward super resolving more realistic images by deeper convolutional neural networks (CNNs), reconstructing fine and natural textures still remains a challenging problem. Recent works on single image super…

Computer Vision and Pattern Recognition · Computer Science 2019-07-30 Mohammad Saeed Rad , Behzad Bozorgtabar , Claudiu Musat , Urs-Viktor Marti , Max Basler , Hazim Kemal Ekenel , Jean-Philippe Thiran

In this paper, we address the problem of reflection removal and deblurring from a single image captured by a plenoptic camera. We develop a two-stage approach to recover the scene depth and high resolution textures of the reflected and…

Computer Vision and Pattern Recognition · Computer Science 2017-08-24 Paramanand Chandramouli , Mehdi Noroozi , Paolo Favaro

Scatter processes of photons lead to blurring of images. Multiple scatter can usually be described by one Gaussian convolution kernel. This can be a crude approximation and we need a linear combination of 2/3 Gaussian kernels to account for…

Data Analysis, Statistics and Probability · Physics 2011-09-20 Waldemar Ulmer

Deep Learning (DL) has shown remarkable results in solving inverse problems in various domains. In particular, the Tikhonet approach is very powerful to deconvolve optical astronomical images (Sureau et al. 2020). Yet, this approach only…

Instrumentation and Methods for Astrophysics · Physics 2022-07-20 F. Nammour , U. Akhaury , J. N. Girard , F. Lanusse , F. Sureau , C. Ben Ali , J. -L. Starck

Hyperspectral imaging is a powerful technology that is plagued by large dimensionality. Herein, we explore a way to combat that hindrance via non-contiguous and contiguous (simpler to realize sensor) band grouping for dimensionality…

Image and Video Processing · Electrical Eng. & Systems 2019-05-31 Muhammad Aminul Islam , Derek T. Anderson , John E. Ball , Nicolas H. Younan

Image dehazing is a typical task in the low-level vision field. Previous studies verified the effectiveness of the large convolutional kernel and attention mechanism in dehazing. However, there are two drawbacks: the multi-scale properties…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 LiPing Lu , Qian Xiong , DuanFeng Chu , BingRong Xu

Artificial Intelligence (AI)-powered pathology is a revolutionary step in the world of digital pathology and shows great promise to increase both diagnosis accuracy and efficiency. However, defocus and motion blur can obscure tissue or cell…

Image and Video Processing · Electrical Eng. & Systems 2020-11-25 Cheng Jiang , Jun Liao , Pei Dong , Zhaoxuan Ma , De Cai , Guoan Zheng , Yueping Liu , Hong Bu , Jianhua Yao

Kernels on discrete structures evaluate pairwise similarities between objects which capture semantics and inherent topology information. Existing kernels on discrete structures are only developed by topology information(such as adjacency…

Machine Learning · Computer Science 2022-11-01 Fuyang Li , Jiying Zhang , Xi Xiao , Bin Zhang , Dijun Luo

Deep neural networks face several challenges in hyperspectral image classification, including insufficient utilization of joint spatial-spectral information, gradient vanishing with increasing depth, and overfitting. To enhance feature…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Guandong Li , Mengxia Ye

Inverse problems in image reconstruction are fundamentally complicated by unknown noise properties. Classical iterative deconvolution approaches amplify noise and require careful parameter selection for an optimal trade-off between…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Mikhail Papkov , Kaupo Palo , Leopold Parts

Many deep neural networks are built by using stacked convolutional layers of fixed and single size (often 3$\times$3) kernels. This paper describes a method for training the size of convolutional kernels to provide varying size kernels in a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 F. Boray Tek , İlker Çam , Deniz Karlı

Many deblurring and blur kernel estimation methods use a maximum a posteriori (MAP) approach or deep learning-based classification techniques to sharpen an image and/or predict the blur kernel. We propose a regression approach using…

Image and Video Processing · Electrical Eng. & Systems 2024-11-07 Luis G. Varela , Laura E. Boucheron , Steven Sandoval , David Voelz , Abu Bucker Siddik

Image subtraction in astronomy is a tool for transient object discovery and characterization, particularly useful in wide fields, and is well suited for moving or photometrically varying objects such as asteroids, extra-solar planets and…

Instrumentation and Methods for Astrophysics · Physics 2013-01-09 Steven Hartung

The dual-pixel (DP) hardware works by splitting each pixel in half and creating an image pair in a single snapshot. Several works estimate depth/inverse depth by treating the DP pair as a stereo pair. However, dual-pixel disparity only…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Liyuan Pan , Shah Chowdhury , Richard Hartley , Miaomiao Liu , Hongguang Zhang , Hongdong Li

Single-shot image deblurring in a low-light condition is known to be a profoundly challenging image translation task. This study tackles the limitations of the low-light image deblurring with a learning-based approach and proposes a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 S M A Sharif , Rizwan Ali Naqvi , Farman Alic , Mithun Biswas