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Popular methods in compressed sensing (CS) are dependent on deep learning (DL), where large amounts of data are used to train non-linear reconstruction models. However, ensuring generalisability over and access to multiple datasets is…

图像与视频处理 · 电气工程与系统科学 2024-09-02 Marlon Bran Lorenzana , Feng Liu , Shekhar S. Chandra

Transform image processing methods are methods that work in domains of image transforms, such as Discrete Fourier, Discrete Cosine, Wavelet and alike. They are the basic tool in image compression, in image restoration, in image re-sampling…

计算机视觉与模式识别 · 计算机科学 2014-08-28 Leonid Yaroslavsky

Conventional algorithms for sparse signal recovery and sparse representation rely on $l_1$-norm regularized variational methods. However, when applied to the reconstruction of $\textit{sparse images}$, i.e., images where only a few pixels…

计算机视觉与模式识别 · 计算机科学 2016-05-09 Sohil Shah , Tom Goldstein , Christoph Studer

For modern high-resolution imaging sensors, pixel binning is performed in low-lighting conditions and in case high frame rates are required. To recover the original spatial resolution, single-image super-resolution techniques can be applied…

图像与视频处理 · 电气工程与系统科学 2024-10-28 Simon Grosche , Andy Regensky , Jürgen Seiler , André Kaup

We propose SinIR, an efficient reconstruction-based framework trained on a single natural image for general image manipulation, including super-resolution, editing, harmonization, paint-to-image, photo-realistic style transfer, and artistic…

计算机视觉与模式识别 · 计算机科学 2021-06-15 Jihyeong Yoo , Qifeng Chen

Generating high-quality, realistic rendering images for real-time applications generally requires tracing a few samples-per-pixel (spp) and using deep learning-based approaches to denoise the resulting low-spp images. Existing denoising…

计算机视觉与模式识别 · 计算机科学 2023-06-27 Boyu Zhang , Hongliang Yuan , Mingyan Zhu , Ligang Liu , Jue Wang

Single Pixel Imaging is an emerging imaging technique that employs a bucket detector (photodiode) to sample a spatially modulated light field, rather than measuring the spatial distribution with an array of detectors. This approach provides…

光学 · 物理学 2026-01-22 Dennis Scheidt

We address the ambiguities in the super-resolution problem under translation. We demonstrate that combinations of low-resolution images at different scales can be used to make the super-resolution problem well posed. Such differences in…

计算机视觉与模式识别 · 计算机科学 2026-04-24 Daniel Fu , Gabby Litterio , Pedro Felzenszwalb , Rashid Zia

Image super-resolution using self-optimizing mask via fractional-order gradient interpolation and reconstruction aims to recover detailed information from low-resolution images and reconstruct them into high-resolution images. Due to the…

计算机视觉与模式识别 · 计算机科学 2017-03-21 Qi Yang , Yanzhu Zhang , Tiebiao Zhao , YangQuan Chen

Here we present new joint reconstruction and regularization techniques inspired by ideas in microlocal analysis and lambda tomography, for the simultaneous reconstruction of the attenuation coefficient and electron density from X-ray…

图像与视频处理 · 电气工程与系统科学 2020-08-26 James Webber , Eric Todd Quinto , Eric L. Miller

Quarter sampling is a novel sensor design that allows for an acquisition of higher resolution images without increasing the number of pixels. When being used for video data, one out of four pixels is measured in each frame. Effectively,…

图像与视频处理 · 电气工程与系统科学 2022-03-18 Simon Grosche , Jürgen Seiler , André Kaup

Sub-pixel registration is a crucial step for applications such as super-resolution in remote sensing, motion compensation in magnetic resonance imaging, and non-destructive testing in manufacturing, to name a few. Recently, these…

计算机视觉与模式识别 · 计算机科学 2017-05-02 Vildan Atalay Aydin , Hassan Foroosh

Single-pixel imaging (SPI) is a novel, unconventional method that goes beyond the notion of traditional cameras but can be computationally expensive and slow for real-time applications. Deep learning has been proposed as an alternative…

图像与视频处理 · 电气工程与系统科学 2022-05-19 Ritz Ann Aguilar , Damian Dailisan

This paper presents several new algorithms for the regularized reconstruction of a surface from its measured gradient field. By taking a matrix-algebraic approach, we establish general framework for the regularized reconstruction problem…

数值分析 · 数学 2013-08-21 Matthew Harker , Paul O'Leary

We propose a framework called ReFInE to directly obtain integral image estimates from a very small number of spatially multiplexed measurements of the scene without iterative reconstruction of any auxiliary image, and demonstrate their…

计算机视觉与模式识别 · 计算机科学 2016-01-28 Kuldeep Kulkarni , Pavan Turaga

Single image super-resolution aims to generate a high-resolution image from a single low-resolution image, which is of great significance in extensive applications. As an ill-posed problem, numerous methods have been proposed to reconstruct…

计算机视觉与模式识别 · 计算机科学 2017-11-07 Longguang Wang , Zaiping Lin , Jinyan Gao , Xinpu Deng , Wei An

Recently, mapping a signal/image into a low rank Hankel/Toeplitz matrix has become an emerging alternative to the traditional sparse regularization, due to its ability to alleviate the basis mismatch between the true support in the…

数值分析 · 数学 2020-12-15 Jian-Feng Cai , Jae Kyu Choi , Jingyang Li , Ke Wei

High dynamic range (HDR) imaging is an indispensable technique in modern photography. Traditional methods focus on HDR reconstruction from multiple images, solving the core problems of image alignment, fusion, and tone mapping, yet having a…

图像与视频处理 · 电气工程与系统科学 2022-10-31 Phuoc-Hieu Le , Quynh Le , Rang Nguyen , Binh-Son Hua

Regularization methods are commonly used in X-ray CT image reconstruction. Different regularization methods reflect the characterization of different prior knowledge of images. In a recent work, a new regularization method called a…

医学物理 · 物理学 2017-04-18 Wenxiang Cong , Ge Wang , Qingsong Yang , Jiang Hsieh , Jia Li , Rongjie Lai

Single particle reconstruction has recently emerged in 3D fluorescence microscopy as a powerful technique to improve the axial resolution and the degree of fluorescent labeling. It is based on the reconstruction of an average volume of a…

图像与视频处理 · 电气工程与系统科学 2023-01-24 Thibaut Eloy , Etienne Baudrier , Marine Laporte , Virginie Hamel , Paul Guichard , Denis Fortun