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Image colorization achieves more and more realistic results with the increasing computation power of recent deep learning techniques. It becomes more difficult to identify the fake colorized images by human eyes. In this work, we propose a…

计算机视觉与模式识别 · 计算机科学 2019-02-19 Weize Quan , Dong-Ming Yan , Kai Wang , Xiaopeng Zhang , Denis Pellerin

A dramatic rise in the flow of manipulated image content on the Internet has led to an aggressive response from the media forensics research community. New efforts have incorporated increased usage of techniques from computer vision and…

计算机视觉与模式识别 · 计算机科学 2020-01-15 Aparna Bharati , Daniel Moreira , Patrick Flynn , Anderson Rocha , Kevin Bowyer , Walter Scheirer

Computed tomography (CT) images containing metallic objects commonly show severe streaking and shadow artifacts. Metal artifacts are caused by nonlinear beam-hardening effects combined with other factors such as scatter and Poisson noise.…

医学物理 · 物理学 2017-08-02 Hyung Suk Park , Sung Min Lee , Hwa Pyung Kim , Jin Keun Seo

We present an approach to enhancing the realism of synthetic images. The images are enhanced by a convolutional network that leverages intermediate representations produced by conventional rendering pipelines. The network is trained via a…

计算机视觉与模式识别 · 计算机科学 2021-05-12 Stephan R. Richter , Hassan Abu AlHaija , Vladlen Koltun

We investigate the use of deep learning in the context of X-ray polarization detection from astrophysical sources as will be observed by the Imaging X-ray Polarimetry Explorer (IXPE), a future NASA selected space-based mission expected to…

天体物理仪器与方法 · 物理学 2020-05-19 Nikita Moriakov , Ashwin Samudre , Michela Negro , Fabian Gieseke , Sydney Otten , Luc Hendriks

Watermarking is an operation of embedding an information into an image in a way that allows to identify ownership of the image despite applying some distortions on it. In this paper, we presented a novel end-to-end solution for embedding…

多媒体 · 计算机科学 2022-01-11 Marcin Plata , Piotr Syga

This paper presents a data processing algorithm with machine learning for polarization extraction and event selection applied to photoelectron track images taken with X-ray polarimeters. The method uses a convolutional neural network (CNN)…

Deep learning models have a large number of free parameters that must be estimated by efficient training of the models on a large number of training data samples to increase their generalization performance. In real-world applications, the…

计算机视觉与模式识别 · 计算机科学 2018-02-15 Hojjat Salehinejad , Shahrokh Valaee , Timothy Dowdell , Joseph Barfett

This paper aims to interpret how deepfake detection models learn artifact features of images when just supervised by binary labels. To this end, three hypotheses from the perspective of image matching are proposed as follows. 1. Deepfake…

计算机视觉与模式识别 · 计算机科学 2022-07-21 Shichao Dong , Jin Wang , Jiajun Liang , Haoqiang Fan , Renhe Ji

In the rapidly evolving area of image synthesis, a serious challenge is the presence of complex artifacts that compromise perceptual realism of synthetic images. To alleviate artifacts and improve quality of synthetic images, we fine-tune…

计算机视觉与模式识别 · 计算机科学 2024-11-19 Bin Cao , Jianhao Yuan , Yexin Liu , Jian Li , Shuyang Sun , Jing Liu , Bo Zhao

Forward-looking sonar can capture high resolution images of underwater scenes, but their interpretation is complex. Generic object detection in such images has not been solved, specially in cases of small and unknown objects. In comparison,…

计算机视觉与模式识别 · 计算机科学 2017-09-11 Matias Valdenegro-Toro

Deep neural networks (DNNs) have shown very promising results for various image restoration (IR) tasks. However, the design of network architectures remains a major challenging for achieving further improvements. While most existing…

计算机视觉与模式识别 · 计算机科学 2020-10-28 Weisheng Dong , Peiyao Wang , Wotao Yin , Guangming Shi , Fangfang Wu , Xiaotong Lu

Image representations, from SIFT and bag of visual words to Convolutional Neural Networks (CNNs) are a crucial component of almost all computer vision systems. However, our understanding of them remains limited. In this paper we study…

计算机视觉与模式识别 · 计算机科学 2016-05-24 Aravindh Mahendran , Andrea Vedaldi

In this paper, we present a deep coupled learning frame- work to address the problem of matching polarimetric ther- mal face photos against a gallery of visible faces. Polariza- tion state information of thermal faces provides the miss- ing…

计算机视觉与模式识别 · 计算机科学 2018-01-08 Seyed Mehdi Iranmanesh , Ali Dabouei , Hadi Kazemi , Nasser M. Nasrabadi

We consider a set of M images, whose pixel intensities at a common point can be treated as the components of a M-dimensional vector. We are interested in the estimation of the modulus of such a vector associated to a compact source. For…

宇宙学与河外天体物理 · 物理学 2011-01-05 F. Argueso , J. L. Sanz , D. Herranz

Large amount of image denoising literature focuses on single channel images and often experimentally validates the proposed methods on tens of images at most. In this paper, we investigate the interaction between denoising and…

计算机视觉与模式识别 · 计算机科学 2017-04-06 Jiqing Wu , Radu Timofte , Zhiwu Huang , Luc Van Gool

Resampling is an important signature of manipulated images. In this paper, we propose two methods to detect and localize image manipulations based on a combination of resampling features and deep learning. In the first method, the Radon…

Banding or false contour is an annoying visual artifact whose impact is even more pronounced in ultra high definition, high dynamic range, and wide colour gamut visual content, which is becoming increasingly popular. Since users associate a…

图像与视频处理 · 电气工程与系统科学 2021-10-19 Raymond Zhou , Shahrukh Athar , Zhongling Wang , Zhou Wang

Uncertainty quantification in inverse medical imaging tasks with deep learning has received little attention. However, deep models trained on large data sets tend to hallucinate and create artifacts in the reconstructed output that are not…

图像与视频处理 · 电气工程与系统科学 2020-08-21 Max-Heinrich Laves , Malte Tölle , Tobias Ortmaier

Using polarization measurements in remote sensing and optical studies allows retrieving more information. We consider relationship between the reflection coefficients of plane and rough surfaces for linearly polarized waves. Certain…

光学 · 物理学 2012-12-14 Yu. K. Shestopaloff