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This study presents a detailed examination of the lattice distortions introduced by glancing incidence Focussed Ion Beam (FIB) milling. Using non-destructive multi-reflection Bragg coherent X-ray diffraction we probe damage formation in an…

材料科学 · 物理学 2017-11-29 Felix Hofmann , Ross J. Harder , Wenjun Liu , Yuzi Liu , Ian K Robinson , Yevhen Zayachuk

Image segmentation is a fundamental task in computer vision aimed at delineating object boundaries within images. Traditional approaches, such as edge detection and variational methods, have been widely explored, while recent advances in…

计算机视觉与模式识别 · 计算机科学 2025-06-12 Junchao Zhou

Restore lost images due to noise and blurred is a burgeoning subject in image processing and despite the different algorithms on this subject, but the effort to improve is always considered. The definition of fractional derivatives in…

信息论 · 计算机科学 2021-10-29 Reza Parvaz

Machine learning methods for computational imaging require uncertainty estimation to be reliable in real settings. While Bayesian models offer a computationally tractable way of recovering uncertainty, they need large data volumes to be…

机器学习 · 计算机科学 2020-08-24 Francesco Tonolini , Jack Radford , Alex Turpin , Daniele Faccio , Roderick Murray-Smith

The "dirty" image made by direct Fourier inversion of visibility data is an important first step in inteferometric imaging. This is where the "deconvolution problem" is defined and the degree to which that problem is either well- or…

天体物理仪器与方法 · 物理学 2025-10-22 Robert Braun

High-quality dehazing performance is highly dependent upon the accurate estimation of transmission map. In this work, the coarse estimation version is first obtained by weightedly fusing two different transmission maps, which are generated…

计算机视觉与模式识别 · 计算机科学 2019-02-20 Qiaoling Shu , Chuansheng Wu , Zhe Xiao , Ryan Wen Liu

Neural style transfer models have been used to stylize an ordinary video to specific styles. To ensure temporal inconsistency between the frames of the stylized video, a common approach is to estimate the optic flow of the pixels in the…

计算机视觉与模式识别 · 计算机科学 2021-02-12 Jianjin Xu , Zheyang Xiong , Xiaolin Hu

The use of integral field units is now commonplace at all major observatories offering efficient means of obtaining spectral as well as imaging information at the same time. IFU instrument designs are complex and spectral images have…

天体物理仪器与方法 · 物理学 2015-06-04 Carina Lagerholm , Harald Kuntschner , Michele Cappellari , Davor Krajnovic , Richard McDermid , Marina Rejkuba

Image restoration aims to recover high-quality images from degraded observations. When the degradation process is known, the recovery problem can be formulated as an inverse problem, and in a Bayesian context, the goal is to sample a clean…

图像与视频处理 · 电气工程与系统科学 2025-10-13 Darshan Thaker , Abhishek Goyal , René Vidal

Invariance to diverse types of image corruption, such as noise, blurring, or colour shifts, is essential to establish robust models in computer vision. Data augmentation has been the major approach in improving the robustness against common…

计算机视觉与模式识别 · 计算机科学 2022-04-26 Minghui Chen , Cheng Wen , Feng Zheng , Fengxiang He , Ling Shao

Diffusion models (DMs) have emerged as powerful generative models for solving inverse problems, offering a good approximation of prior distributions of real-world image data. Typically, diffusion models rely on large-scale clean signals to…

计算机视觉与模式识别 · 计算机科学 2024-07-17 Yifei Wang , Weimin Bai , Weijian Luo , Wenzheng Chen , He Sun

Image deraining have have gained a great deal of attention in order to address the challenges posed by the effects of harsh weather conditions on visual tasks. While convolutional neural networks (CNNs) are popular, their limitations in…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Sijin He , Guangfeng Lin

In this paper, we introduce a total variation based variational model for denoising wrapped phase images. Our model improves on former methods by preserving discontinuities of the phase map and enforcing the fundamental Pythagorean…

数值分析 · 数学 2023-04-07 Ivan May-Cen , Ricardo Legarda-Saenz , Carlos Brito-Loeza

We develop a cut finite element method (CutFEM) for the convection problem in a so called fractured domain which is a union of manifolds of different dimensions such that a $d$ dimensional component always resides on the boundary of a $d+1$…

数值分析 · 数学 2019-02-05 Erik Burman , Peter Hansbo , Mats G. Larson , Karl Larsson

The color appearance of a pathological image is highly related to the imaging protocols, the proportion of different dyes, and the scanning devices. Computer-aided diagnostic systems may deteriorate when facing these color-variant…

图像与视频处理 · 电气工程与系统科学 2025-06-25 Zheng Chen

Many tasks in computer vision can be cast as a "label changing" problem, where the goal is to make a semantic change to the appearance of an image or some subject in an image in order to alter the class membership. Although successful…

We propose a new compressive imaging method for reconstructing 2D or 3D objects from their scattered wave-field measurements. Our method relies on a novel, nonlinear measurement model that can account for the multiple scattering phenomenon,…

计算机视觉与模式识别 · 计算机科学 2016-10-07 Hsiou-Yuan Liu , Ulugbek S. Kamilov , Dehong Liu , Hassan Mansour , Petros T. Boufounos

While Fourier ptychography (FP) offers super-resolution for macroscopic imaging, its real-world application is severely hampered by atmospheric turbulence, a challenge largely unaddressed in existing macroscopic FP research operating under…

光学 · 物理学 2025-07-08 Junhao Zhang , Weilong Wei , Kaiyuan Yang , Qiang Zhou , Haotong Ma , Ge Ren , Zongliang Xie

It is challenging to remove rain-steaks from a single rainy image because the rain steaks are spatially varying in the rainy image. Although the CNN based methods have reported promising performance recently, there are still some defects,…

计算机视觉与模式识别 · 计算机科学 2023-05-04 Chaobing Zheng , Jun Jiang , Wenjian Ying , Shiqian Wu

Models for fine-grained image classification tasks, where the difference between some classes can be extremely subtle and the number of samples per class tends to be low, are particularly prone to picking up background-related biases and…

计算机视觉与模式识别 · 计算机科学 2023-08-24 Ananthu Aniraj , Cassio F. Dantas , Dino Ienco , Diego Marcos