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Photographing in the under-illuminated scenes, the presence of complex light sources often leave strong flare artifacts in images, where the intensity, the spectrum, the reflection, and the aberration altogether contribute the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Zheyan Jin , Shiqi Chen , Huajun Feng , Zhihai Xu , Yueting Chen

Lens flare is a common image artifact that can significantly degrade image quality and affect the performance of computer vision systems due to a strong light source pointing at the camera. This survey provides a comprehensive overview of…

Image and Video Processing · Electrical Eng. & Systems 2023-10-24 Yousef Kotp , Marwan Torki

Labeling objects at a subordinate level typically requires expert knowledge, which is not always available when using random annotators. As such, learning directly from web images for fine-grained recognition has attracted broad attention.…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Huafeng Liu , Chuanyi Zhang , Yazhou Yao , Xiushen Wei , Fumin Shen , Jian Zhang , Zhenmin Tang

In some previous papers we proposed the use of free software for a processing of the Google satellite imagery. Here we discuss the use of a wavelet filter for the same purposes. This filter is a tool included in a freely downloadable…

Geophysics · Physics 2010-09-09 Amelia Carolina Sparavigna

Manipulation tools that realistically edit images are widely available, making it easy for anyone to create and spread misinformation. In an attempt to fight fake news, forgery detection and localization methods were designed. However,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Hannes Mareen , Dante Vanden Bussche , Fabrizio Guillaro , Davide Cozzolino , Glenn Van Wallendael , Peter Lambert , Luisa Verdoliva

Filter pruning has been widely used for neural network compression because of its enabled practical acceleration. To date, most of the existing filter pruning works explore the importance of filters via using intra-channel information. In…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Yang Sui , Miao Yin , Yi Xie , Huy Phan , Saman Zonouz , Bo Yuan

Flare, an optical phenomenon resulting from unwanted scattering and reflections within a lens system, presents a significant challenge in imaging. The diverse patterns of flares, such as halos, streaks, color bleeding, and haze, complicate…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Gopi Raju Matta , Rahul Siddartha , Rongali Simhachala Venkata Girish , Sumit Sharma , Kaushik Mitra

Ultrasound plane wave imaging is a cutting-edge technique that enables high frame-rate imaging. However, one challenge associated with high frame-rate ultrasound imaging is the high noise associated with them, hindering their wider…

Image and Video Processing · Electrical Eng. & Systems 2024-08-21 Hojat Asgariandehkordi , Sobhan Goudarzi , Mostafa Sharifzadeh , Adrian Basarab , Hassan Rivaz

A new method recovers phase difference of interfering wavefronts from a pattern of interference fringes, avoiding discontinuity problem. The continuous phase is a solution of the first order differential equation of the interferogram…

Data Analysis, Statistics and Probability · Physics 2024-04-24 V. Berejnov , B. Y. Rubinstein

Deep Belief Networks which are hierarchical generative models are effective tools for feature representation and extraction. Furthermore, DBNs can be used in numerous aspects of Machine Learning such as image denoising. In this paper, we…

Machine Learning · Computer Science 2014-01-03 Mohammad Ali Keyvanrad , Mohammad Pezeshki , Mohammad Ali Homayounpour

Machine learning techniques work best when the data used for training resembles the data used for evaluation. This holds true for learned single-image denoising algorithms, which are applied to real raw camera sensor readings but, due to…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Tim Brooks , Ben Mildenhall , Tianfan Xue , Jiawen Chen , Dillon Sharlet , Jonathan T. Barron

Focused ion beam (FIB) tomography provides high resolution volumetric images on a micro scale. However, due to the physical acquisition process the resulting images are often corrupted by a so-called curtaining or waterfall effect. In this…

Numerical Analysis · Mathematics 2016-04-06 Jan Henrik Fitschen , Jianwei Ma , Sebastian Schuff

A simple, yet general, formalism for the optimized linear combination of astrophysical images is constructed and demonstrated. The formalism allows the user to combine multiple undersampled images to provide oversampled output at high…

Instrumentation and Methods for Astrophysics · Physics 2015-05-28 Barnaby Rowe , Christopher Hirata , Jason Rhodes

In today's age of internet and social media, one can find an enormous volume of forged images on-line. These images have been used in the past to convey falsified information and achieve harmful intentions. The spread and the effect of the…

Computer Vision and Pattern Recognition · Computer Science 2017-04-06 Parag S. Chandakkar , Baoxin Li

The methods of extracting image features are the key to many image processing tasks. At present, the most popular method is the deep neural network which can automatically extract robust features through end-to-end training instead of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-20 Xiang Ma , Liangzhe Chen , Zhaohong Deng , Peng Xu , Qisheng Yan , Kup-Sze Choi , Shitong Wang

Conventional approaches to image de-fencing use multiple adjacent frames for segmentation of fences in the reference image and are limited to restoring images of static scenes only. In this paper, we propose a de-fencing algorithm for…

Computer Vision and Pattern Recognition · Computer Science 2016-10-24 Sankaraganesh Jonna , Krishna K. Nakka , Rajiv R. Sahay

Radio frequency interference (RFI) is the principal factor limiting the sensitivities of radio telescopes, particularly at frequencies below 1 GHz. I present a conceptually new approach to mitigation of RFI in interferometric data. This has…

Instrumentation and Methods for Astrophysics · Physics 2011-02-11 Ramana Athreya

Wavelet denoising is a classical and effective approach for reducing noise in images and signals. Suggested in 1994, this approach is carried out by rectifying the coefficients of a noisy image in the transform domain, using a set of scalar…

Image and Video Processing · Electrical Eng. & Systems 2021-04-07 Yacov Hel-Or , Gil Ben-Artzi

Automatic detection of cracks in concrete surfaces based on image processing is a clear trend in modern civil engineering applications. Most infrastructure is made of concrete and cracks reveal degradation of the structural integrity of the…

Image and Video Processing · Electrical Eng. & Systems 2021-06-11 Diego Frias , José Hidalgo

Using the complementary wave- and particle-like natures of photons, it is possible to make ``interaction-free'' measurements where the presence of an object can be determined with no photons being absorbed. We investigated several…

Quantum Physics · Physics 2009-10-31 Andrew G. White , Jay R. Mitchell , Olaf Nairz , Paul G. Kwiat
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