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Accurate registration of medical images is vital for doctor's diagnosis and quantitative analysis. In this paper, we propose a new deformable medical image registration method based on average geometric transformations and VoxelMorph CNN…

计算机视觉与模式识别 · 计算机科学 2019-07-24 Yongpei Zhu , Zicong Zhou , Guojun Liao , Kehong Yuan

Registration of pre-operative and post-recurrence brain images is often needed to evaluate the effectiveness of brain gliomas treatment. While recent deep learning-based deformable registration methods have achieved remarkable success with…

图像与视频处理 · 电气工程与系统科学 2022-06-09 Tony C. W. Mok , Albert C. S. Chung

Model-based iterative reconstruction (MBIR) techniques have demonstrated many advantages in X-ray CT image reconstruction. The MBIR approach is often modeled as a convex optimization problem including a data fitting function and a penalty…

最优化与控制 · 数学 2015-12-09 Meng Wu , Andreas Maier , Qiao Yang , Rebecca Fahrig

Image ordinal regression has been mainly studied along the line of exploiting the order of categories. However, the issues of class imbalance and category overlap that are very common in ordinal regression were largely overlooked. As a…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Yi Cheng , Haochao Ying , Renjun Hu , Jinhong Wang , Wenhao Zheng , Xiao Zhang , Danny Chen , Jian Wu

Nowadays, facial recognition systems are still vulnerable to adversarial attacks. These attacks vary from simple perturbations of the input image to modifying the parameters of the recognition model to impersonate an authorised subject.…

计算机视觉与模式识别 · 计算机科学 2023-10-05 Daile Osorio-Roig , Mahdi Ghafourian , Christian Rathgeb , Ruben Vera-Rodriguez , Christoph Busch , Julian Fierrez

We propose Generative Probabilistic Image Colorization, a diffusion-based generative process that trains a sequence of probabilistic models to reverse each step of noise corruption. Given a line-drawing image as input, our method suggests…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Chie Furusawa , Shinya Kitaoka , Michael Li , Yuri Odagiri

Quantum random number generators (QRNGs) output genuine random numbers based upon the uncertainty principle. A QRNG contains two parts in general --- a randomness source and a readout detector. How to remove detector imperfections has been…

量子物理 · 物理学 2016-01-14 Zhu Cao , Hongyi Zhou , Xiongfeng Ma

The continuous-time random walk (CTRW) model is useful for alleviating the computational burden of simulating diffusion in actual media. In principle, isotropic CTRW only requires knowledge of the step-size, $P_l$, and waiting-time, $P_t$,…

统计力学 · 物理学 2017-01-19 Shahar Amitai , Raphael Blumenfeld

Blind face restoration (BFR) is important while challenging. Prior works prefer to exploit GAN-based frameworks to tackle this task due to the balance of quality and efficiency. However, these methods suffer from poor stability and…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Xinmin Qiu , Congying Han , Zicheng Zhang , Bonan Li , Tiande Guo , Xuecheng Nie

The problem of an accurate tip radius and shape characterization is very important for determination of surface mechanical and chemical properties on the basis of the scanning probe microscopy measurements. We think that the most favorable…

仪器与探测器 · 物理学 2011-05-10 G. Jozwiak , A. Henrykowski , A. Masalska , T. Gotszalk , I. Ritz , H. Steigmann

The increasing popularity of spatial audio in applications such as teleconferencing, entertainment, and virtual reality has led to the recent developments of binaural reproduction methods. However, only a few of these methods are…

音频与语音处理 · 电气工程与系统科学 2025-02-17 Ami Berger , Vladimir Tourbabin , Jacob Donley , Zamir Ben-Hur , Boaz Rafaely

Our main goal is to study a class of processes whose increments are generated via a cellular automata rule. Given the increments of a simple biased random walk, a new sequence of (dependent) Bernoulli random variables is produced. It is…

概率论 · 数学 2017-10-24 Andrea Collevecchio , Kais Hamza , Yunxuan Liu

The combined Continuous Time Random Walk (CTRW) in position and momentum space is introduced, in the form of two coupled integral equations that describe the evolution of the probability distribution for finding a particle at a certain…

混沌动力学 · 物理学 2007-10-29 H. Isliker

We consider a discrete random walk (RW) in n dimensions . The RW is adapted with a geometric absorption process: at any discrete time there is a constant probability that absorption occurs in the current state. To model the RW with…

概率论 · 数学 2013-09-05 Theo van Uem

Motivated by the following two observations: 1) people are aging differently under different conditions for changeable facial attributes, e.g., skin color may become darker when working outside, and 2) it needs to keep some unchanged facial…

计算机视觉与模式识别 · 计算机科学 2019-12-23 Haien Zeng , Hanjiang Lai , Jian Yin

In this paper, we propose a novel matching based tracker by investigating the relationship between template matching and the recent popular correlation filter based trackers (CFTs). Compared to the correlation operation in CFTs, a…

计算机视觉与模式识别 · 计算机科学 2019-04-16 Fanghui Liu , Chen Gong , Xiaolin Huang , Tao Zhou , Jie Yang , Dacheng Tao

We introduce a discrete-time quantum random walk (QRW) framework for spatial epidemic modelling on a two-dimensional square lattice and compare its dynamics to classical random-walk SIR models. In our model, each infected site spawns a…

量子物理 · 物理学 2025-09-15 Sayan Manna , Nikhil Kowshik , Sudebkumar Prasant Pal

Random walks on dynamic graphs have received increasingly more attention from different academic communities over the last decade. Despite the relatively large literature, little is known about random walks that construct the graph where…

In this article, we present new random walk methods to solve flow and transport problems in unsaturated/saturated porous media, including coupled flow and transport processes in soils, heterogeneous systems modeled through random hydraulic…

数值分析 · 数学 2021-05-14 Nicolae Suciu , Davide Illiano , Alexander Prechtel , Florin A. Radu

Person re-identification is a critical security task for recognizing a person across spatially disjoint sensors. Previous work can be computationally intensive and is mainly based on low-level cues extracted from RGB data and implemented on…

计算机视觉与模式识别 · 计算机科学 2016-11-17 George Cushen