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Digital two-dimensional (2D) spatial sampling devices (such as charge-coupled device) have been widely used in various imaging systems, especially in computational imaging systems. However, the undersampling of digital sampling devices is a…

图像与视频处理 · 电气工程与系统科学 2019-10-02 Junzheng Peng , Manhong Yao , Zixin Cai , Xue Qiu , Zibang Zhang , Shiping Li , Jingang Zhong

In this paper the technique for resolution and contrast enhancement of satellite geographical images based on discrete wavelet transform (DWT), stationary wavelet transform (SWT) and singular value decomposition (SVD) has been proposed. In…

计算机视觉与模式识别 · 计算机科学 2014-05-09 Prajakta P. Khairnar , C. A. Manjare

This paper introduces a method based on a deep neural network (DNN) that is perfectly capable of processing radar data from extremely thinned radar apertures. The proposed DNN processing can provide both aliasing-free radar imaging and…

信号处理 · 电气工程与系统科学 2023-07-12 Christian Schuessler , Marcel Hoffmann , Martin Vossiek

Hyperspectral image super-resolution addresses the problem of fusing a low-resolution hyperspectral image (LR-HSI) and a high-resolution multispectral image (HR-MSI) to produce a high-resolution hyperspectral image (HR-HSI). Tensor analysis…

数值分析 · 数学 2022-12-07 Diyi Jin , Jianjun Liu , Jinlong Yang , Zebin Wu

Purpose: This study presents a variable resolution (VR) sampling and deep learning reconstruction approach for multi-spectral MRI near metal implants, aiming to reduce scan times while maintaining image quality. Background: The rising use…

图像与视频处理 · 电气工程与系统科学 2024-11-01 Azadeh Sharafi , Nikolai J. Mickevicius , Mehran Baboli , Andrew S. Nencka , Kevin M. Koch

We report a new coherent imaging technique, termed ptychographic structured modulation (PSM), for quantitative super-resolution microscopy. In this technique, we place a thin diffuser (i.e., a scattering lens) in between the sample and the…

图像与视频处理 · 电气工程与系统科学 2019-07-26 Pengming Song , Shaowei Jiang , He Zhang , Zichao Bian , Chengfei Guo , Kazunori Hoshino , Guoan Zheng

Introducing spatial prior information in hyperspectral imaging (HSI) analysis has led to an overall improvement of the performance of many HSI methods applied for denoising, classification, and unmixing. Extending such methodologies to…

图像与视频处理 · 电气工程与系统科学 2023-07-19 Ricardo Augusto Borsoi , Tales Imbiriba , José Carlos Moreira Bermudez , Cédric Richard

Recently, deep learning-based compressive imaging (DCI) has surpassed the conventional compressive imaging in reconstruction quality and faster running time. While multi-scale has shown superior performance over single-scale, research in…

图像与视频处理 · 电气工程与系统科学 2020-08-04 Thuong Nguyen Canh , Byeungwoo Jeon

Coded aperture snapshot spectral imager (CASSI) is a computational imaging system that acquires a three dimensional (3D) spectral data cube by single or a few two dimensional (2D) measurements. Binary random coded apertures with square…

图像与视频处理 · 电气工程与系统科学 2020-04-22 Hao Zhang , Xu Ma , Gonzalo R. Arce

Introduction. Noisy measurements frequently cause noisy and inaccurate images in impedance imaging. No post-processing technique exists to calculate the propagation of measurement noise and use this to suppress noise in the image.…

医学物理 · 物理学 2024-03-13 Kai Mason , Florencia Maurino-Alperovich , David Holder , Kirill Aristovich

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…

计算机视觉与模式识别 · 计算机科学 2020-05-27 Shady Abu Hussein , Tom Tirer , Raja Giryes

Hyper spectral images (HSI) provide rich spectral and spatial information across a series of contiguous spectral bands. However, the accurate processing of the spectral and spatial correlation between the bands requires the use of…

神经与进化计算 · 计算机科学 2021-07-29 Gourav Datta , Souvik Kundu , Akhilesh R. Jaiswal , Peter A. Beerel

Ultrasound (US) interpretation is hampered by multiplicative speckle, acquisition blur from the point-spread function (PSF), and scanner- and operator-dependent artifacts. Supervised enhancement methods assume access to clean targets or…

图像与视频处理 · 电气工程与系统科学 2026-01-30 Shujaat Khan , Syed Muhammad Atif , Jaeyoung Huh , Syed Saad Azhar

We present a non-iterative method to deconvolve the spatial response function or the point spread function (PSF) from images taken with the Suzaku X-ray Imaging Spectrometer (XIS). The method is optimized for analyses of extended sources…

天体物理学 · 物理学 2015-05-13 Mutsumi Sugizaki , Tuneyoshi Kamae , Yoshitomo Maeda

Deformable Parts Models and Convolutional Networks each have achieved notable performance in object detection. Yet these two approaches find their strengths in complementary areas: DPMs are well-versed in object composition, modeling…

计算机视觉与模式识别 · 计算机科学 2014-11-20 Li Wan , David Eigen , Rob Fergus

Linear-array based photoacoustic images are reconstructed using the conventional delay-and-sum (DAS) beamforming method. Although the DAS beamformer is well suited for PA image formation, reconstructed images are often afflicted by noises,…

医学物理 · 物理学 2022-10-05 Sufayan Mulani , Souradip Paul , Mayanglambam Suheshkumar Singh

Hyperspectral remote sensing images (HSIs) are characterized by having a low spatial resolution and a high spectral resolution, whereas multispectral images (MSIs) are characterized by low spectral and high spatial resolutions. These…

计算机视觉与模式识别 · 计算机科学 2014-06-11 Miguel Simões , José Bioucas-Dias , Luis B. Almeida , Jocelyn Chanussot

Semantic interaction (SI) in Dimension Reduction (DR) of images allows users to incorporate feedback through direct manipulation of the 2D positions of images. Through interaction, users specify a set of pairwise relationships that the DR…

人机交互 · 计算机科学 2024-08-08 Jiayue Lin , Rebecca Faust , Chris North

The cancer prognosis on gigapixel Whole-Slide Images (WSIs) has always been a challenging task. To further enhance WSI visual representations, existing methods have explored image pyramids, instead of single-resolution images, in WSIs. In…

图像与视频处理 · 电气工程与系统科学 2023-05-15 Pei Liu , Bo Fu , Feng Ye , Rui Yang , Bin Xu , Luping Ji

The effect of noise on the Inverse Synthetic Aperture Radar (ISAR) with sparse apertures is a challenging issue for image reconstruction with high resolution at low Signal-to-Noise Ratios (SNRs). It is well-known that the image resolution…

信号处理 · 电气工程与系统科学 2024-06-18 Mohammad Roueinfar , Mohammad Hossein Kahaei