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Deep convolutional networks have become a popular tool for image generation and restoration. Generally, their excellent performance is imputed to their ability to learn realistic image priors from a large number of example images. In this…

计算机视觉与模式识别 · 计算机科学 2020-05-19 Dmitry Ulyanov , Andrea Vedaldi , Victor Lempitsky

Tomographic image reconstruction is generally an ill-posed linear inverse problem. Such ill-posed inverse problems are typically regularized using prior knowledge of the sought-after object property. Recently, deep neural networks have been…

图像与视频处理 · 电气工程与系统科学 2021-09-28 Sayantan Bhadra , Varun A. Kelkar , Frank J. Brooks , Mark A. Anastasio

The deep image prior was recently introduced as a prior for natural images. It represents images as the output of a convolutional network with random inputs. For "inference", gradient descent is performed to adjust network parameters to…

计算机视觉与模式识别 · 计算机科学 2019-04-17 Zezhou Cheng , Matheus Gadelha , Subhransu Maji , Daniel Sheldon

This paper proposes a novel approach to regularize the \textit{ill-posed} and \textit{non-linear} blind image deconvolution (blind deblurring) using deep generative networks as priors. We employ two separate generative models --- one…

计算机视觉与模式识别 · 计算机科学 2019-02-28 Muhammad Asim , Fahad Shamshad , Ali Ahmed

Learning a good image prior is a long-term goal for image restoration and manipulation. While existing methods like deep image prior (DIP) capture low-level image statistics, there are still gaps toward an image prior that captures rich…

图像与视频处理 · 电气工程与系统科学 2020-07-21 Xingang Pan , Xiaohang Zhan , Bo Dai , Dahua Lin , Chen Change Loy , Ping Luo

This paper addresses mesh restoration problems, i.e., denoising and completion, by learning self-similarity in an unsupervised manner. For this purpose, the proposed method, which we refer to as Deep Mesh Prior, uses a graph convolutional…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Shota Hattori , Tatsuya Yatagawa , Yutaka Ohtake , Hiromasa Suzuki

Supervised learning with a convolutional neural network is recognized as a powerful means of image restoration. However, most such methods have been designed for application to grayscale and/or color images; therefore, they have limited…

图像与视频处理 · 电气工程与系统科学 2019-07-02 Ryuji Imamura , Tatsuki Itasaka , Masahiro Okuda

Image denoisers have been shown to be powerful priors for solving inverse problems in imaging. In this work, we introduce a generalization of these methods that allows any image restoration network to be used as an implicit prior. The…

图像与视频处理 · 电气工程与系统科学 2023-10-03 Yuyang Hu , Mauricio Delbracio , Peyman Milanfar , Ulugbek S. Kamilov

Face hallucination, which is the task of generating a high-resolution face image from a low-resolution input image, is a well-studied problem that is useful in widespread application areas. Face hallucination is particularly challenging…

计算机视觉与模式识别 · 计算机科学 2016-04-28 Oncel Tuzel , Yuichi Taguchi , John R. Hershey

Deep neural networks as image priors have been recently introduced for problems such as denoising, super-resolution and inpainting with promising performance gains over hand-crafted image priors such as sparsity and low-rank. Unlike learned…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Gauri Jagatap , Chinmay Hegde

Deep neural networks are a very powerful tool for many computer vision tasks, including image restoration, exhibiting state-of-the-art results. However, the performance of deep learning methods tends to drop once the observation model used…

图像与视频处理 · 电气工程与系统科学 2020-07-01 Jenny Zukerman , Tom Tirer , Raja Giryes

In this paper we address the problem of hallucinating high-resolution facial images from unaligned low-resolution inputs at high magnification factors. We approach the problem with convolutional neural networks (CNNs) and propose a novel…

计算机视觉与模式识别 · 计算机科学 2019-02-12 Klemen Grm , Simon Dobrišek , Walter J. Scheirer , Vitomir Štruc

Image restoration has seen great progress in the last years thanks to the advances in deep neural networks. Most of these existing techniques are trained using full supervision with suitable image pairs to tackle a specific degradation.…

图像与视频处理 · 电气工程与系统科学 2020-09-11 Leonhard Helminger , Michael Bernasconi , Abdelaziz Djelouah , Markus Gross , Christopher Schroers

Image restoration problems are typically ill-posed requiring the design of suitable priors. These priors are typically hand-designed and are fully instantiated throughout the process. In this paper, we introduce a novel framework for…

计算机视觉与模式识别 · 计算机科学 2019-03-19 Raied Aljadaany , Dipan K. Pal , Marios Savvides

Uncertainty quantification in inverse medical imaging tasks with deep learning has received little attention. However, deep models trained on large data sets tend to hallucinate and create artifacts in the reconstructed output that are not…

图像与视频处理 · 电气工程与系统科学 2020-08-21 Max-Heinrich Laves , Malte Tölle , Tobias Ortmaier

This paper proposes a novel approach to regularize the ill-posed blind image deconvolution (blind image deblurring) problem using deep generative networks. We employ two separate deep generative models - one trained to produce sharp images…

计算机视觉与模式识别 · 计算机科学 2019-08-21 Muhammad Asim , Fahad Shamshad , Ali Ahmed

The "deep image prior" proposed by Ulyanov et al. is an intriguing property of neural nets: a convolutional encoder-decoder network can be used as a prior for natural images. The network architecture implicitly introduces a bias; If we…

计算机视觉与模式识别 · 计算机科学 2019-12-20 Prithvijit Chakrabarty , Subhransu Maji

Through the use of carefully tailored convolutional neural network architectures, a deep image prior (DIP) can be used to obtain pre-images from latent representation encodings. Though DIP inversion has been known to be superior to…

机器学习 · 计算机科学 2020-10-26 Vivek Narayanaswamy , Jayaraman J. Thiagarajan , Andreas Spanias

We propose to leverage denoising autoencoder networks as priors to address image restoration problems. We build on the key observation that the output of an optimal denoising autoencoder is a local mean of the true data density, and the…

计算机视觉与模式识别 · 计算机科学 2017-03-30 Siavash Arjomand Bigdeli , Matthias Zwicker

Most modern imaging systems incorporate a computational pipeline to infer the image of interest from acquired measurements. The Bayesian approach to solve such ill-posed inverse problems involves the characterization of the posterior…

计算机视觉与模式识别 · 计算机科学 2023-05-26 Pakshal Bohra , Thanh-an Pham , Jonathan Dong , Michael Unser
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