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The Light Field (LF) deblurring task is a challenging problem as the blur images are caused by different reasons like the camera shake and the object motion. The single image deblurring method is a possible way to solve this problem.…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Zeqi Shen , Shuo Zhang , Zhuhao Zhang , Qihua Chen , Xueyao Dong , Youfang Lin

Adaptive optics laser guide star systems perform atmospheric correction of stellar wavefronts in two parts: stellar tip-tilt and high-spatial-order laser-correction. The requirement of a sufficiently bright guide star in the field-of-view…

天体物理仪器与方法 · 物理学 2018-01-31 Ward S. Howard , Nicholas M. Law , Carl A. Ziegler , Christoph Baranec , Reed Riddle

Today, more than 12 million people over the age of 40 suffer from ocular diseases. Most commonly, older patients are susceptible to age related macular degeneration, an eye disease that causes blurring of the central vision due to the…

图像与视频处理 · 电气工程与系统科学 2022-05-03 Ananya Dua , Pham Hung Minh , Sajid Fahmid , Shikhar Gupta , Sophia Zheng , Vanessa Moyo , Yanran Elisa Xue

The performance of a wide-field adaptive optics system depends on input design parameters. Here we investigate the performance of a multi-object adaptive optics system design for the European Extremely Large Telescope, using an end-to-end…

天体物理仪器与方法 · 物理学 2016-09-21 Alastair Basden , Tim Morris

An adaptive algorithm for computing eigenmodes and propagation constants of optical fibers is proposed. The algorithm is built using a dual-weighted residual error estimator. The residuals are based on the eigensystem for leaky hybrid modes…

Diabetic retinopathy is a leading cause of blindness around the world and demands precise AI-based diagnostic tools. Traditional loss functions in multi-class classification, such as Categorical Cross-Entropy (CCE), are very common but…

图像与视频处理 · 电气工程与系统科学 2025-04-24 Santhosh Malarvannan , Pandiyaraju V , Shravan Venkatraman , Abeshek A , Priyadarshini B , Kannan A

In computer vision, correcting the exposure level is a fundamental task for enhancing the visual quality of observations with inappropriate lightness. However, existing methodologies tend to be impractical because they lack adaptability to…

计算机视觉与模式识别 · 计算机科学 2026-04-29 Long Ma , Nan An , Jinyuan Liu , Xin Fan , Zhongxuan Luo , Deyu Meng , Risheng Liu

Dyslexia, affecting an estimated 10% to 20% of the global population, significantly impairs learning capabilities, highlighting the need for innovative and accessible diagnostic methods. This paper investigates the effectiveness of…

机器学习 · 计算机科学 2025-06-16 Kevin Cogan , Vuong M. Ngo , Mark Roantree

With the advancements in medical artificial intelligence (AI), fundus image classifiers are increasingly being applied to assist in ophthalmic diagnosis. While existing classification models have achieved high accuracy on specific fundus…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Yuzhuo Zhou , Chi Liu , Sheng Shen , Siyu Le , Liwen Yu , Sihan Ouyang , Zongyuan Ge

Polyp detectors trained on clean datasets often underperform in real-world endoscopy, where illumination changes, motion blur, and occlusions degrade image quality. Existing approaches struggle with the domain gap between controlled…

计算机视觉与模式识别 · 计算机科学 2025-12-17 Shengkai Xu , Hsiang Lun Kao , Tianxiang Xu , Honghui Zhang , Junqiao Wang , Runmeng Ding , Guanyu Liu , Tianyu Shi , Zhenyu Yu , Guofeng Pan , Ziqian Bi , Yuqi Ouyang

The growing burden of myopia and retinal diseases necessitates more accessible and efficient eye screening solutions. This study presents a compact, dual-function optical device that integrates fundus photography and refractive error…

图像与视频处理 · 电气工程与系统科学 2025-04-29 Boyuan Peng , Jiaju Chen , Yiwei Zhang , Cuiyi Peng , Junyang Li , Jiaming Deng , Peiwu Qin

In addition to the BLINC/MIRAC IR science instruments, the Magellan adaptive secondary AO system will have an EEV CCD47 that can be used both for visible AO science and as a wide-field acquisition camera. The effects of atmospheric…

天体物理仪器与方法 · 物理学 2010-10-08 Derek Kopon , Laird M. Close , Victor Gasho

Exudative (wet) age-related macular degeneration (AMD) is a leading cause of vision loss in older adults, typically treated with intravitreal injections. Emerging therapies, such as subretinal injections of stem cells, gene therapy, small…

Retinopathy represents a group of retinal diseases that, if not treated timely, can cause severe visual impairments or even blindness. Many researchers have developed autonomous systems to recognize retinopathy via fundus and optical…

图像与视频处理 · 电气工程与系统科学 2021-11-05 Taimur Hassan , Bilal Hassan , Muhammad Usman Akram , Shahrukh Hashmi , Abdel Hakim Taguri , Naoufel Werghi

Laser photocoagulation is one of the most frequently used treatment approaches for retinal diseases such as diabetic retinopathy and macular edema. The use of model-based control, such as Model Predictive Control (MPC), enhances a safe and…

系统与控制 · 电气工程与系统科学 2022-03-01 Manuel Schaller , Mitsuru Wilson , Viktoria Kleyman , Mario Mordmüller , Ralf Brinkmann , Matthias A. Müller , Karl Worthmann

Aiming at realizing novel vision augmentation experiences, this paper proposes the IlluminatedFocus technique, which spatially defocuses real-world appearances regardless of the distance from the user's eyes to observed real objects. With…

人机交互 · 计算机科学 2020-03-10 Tatsuyuki Ueda , Daisuke Iwai , Takefumi Hiraki , Kosuke Sato

We present an analytical derivation of the on-axis performance of Adaptive Optics systems using a given number of guide stars of arbitrary altitude, distributed at arbitrary angular positions in the sky. The expressions of the residual…

天体物理仪器与方法 · 物理学 2015-06-17 E. Tatulli , A. N. Ramaprakash

Adaptive Optics has become a key technology for the largest ground-based telescopes currently under or close to begin of construction. Adaptive optics is an indispensable component and has basically only one task, that is to operate the…

天体物理仪器与方法 · 物理学 2019-01-24 Stefan Hippler

In a typical video conferencing setup, it is hard to maintain eye contact during a call since it requires looking into the camera rather than the display. We propose an eye contact correction model that restores the eye contact regardless…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Leo F. Isikdogan , Timo Gerasimow , Gilad Michael

Recently, Transformers have shown promising performance in various vision tasks. A challenging issue in Transformer design is that global self-attention is very expensive to compute, especially for the high-resolution vision tasks. Local…

计算机视觉与模式识别 · 计算机科学 2022-11-15 Zhemin Zhang , Xun Gong