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Chromosome analysis and identification from metaphase images is a critical part of cytogenetics based medical diagnosis. It is mainly used for identifying constitutional, prenatal and acquired abnormalities in the diagnosis of genetic…

计算机视觉与模式识别 · 计算机科学 2022-09-13 Amritha S Pallavoor , Prajwal A , Sundareshan TS , Sreekanth K Pallavoor

We presented a new 3D refinement method for Cryo-EM single particle analysis which can improve the resolution of final electron density map in this paper. We proposed to enforce both sparsity and smoothness to improve the regularity of…

图像与视频处理 · 电气工程与系统科学 2020-03-12 Zhenwei Luo

We present and rigorously analyze the behavior of a distributed, stochastic algorithm for separation and integration in self-organizing particle systems, an abstraction of programmable matter. Such systems are composed of individual…

分布式、并行与集群计算 · 计算机科学 2019-06-06 Sarah Cannon , Joshua J. Daymude , Cem Gokmen , Dana Randall , Andréa W. Richa

In high-background or calibration measurements with cryogenic particle detectors, a significant share of the exposure is lost due to pile-up of recoil events. We propose a method for the separation of pile-up events with an LSTM neural…

仪器与探测器 · 物理学 2021-12-14 Felix Wagner

Single particle electron cryomicroscopy (cryo-EM) allows for structures of proteins and protein complexes to be determined from images of non-crystalline specimens. Cryo-EM data analysis requires electron microscope images of randomly…

仪器与探测器 · 物理学 2015-11-23 Jianhua Zhao , Marcus A. Brubaker , Samir Benlekbir , John L. Rubinstein

Nuclear instance segmentation and classification provide critical quantitative foundations for digital pathology diagnosis. With the advent of the foundational Segment Anything Model (SAM), the accuracy and efficiency of nuclear…

图像与视频处理 · 电气工程与系统科学 2025-04-04 Liying Xu , Hongliang He , Wei Han , Hanbin Huang , Siwei Feng , Guohong Fu

We introduce DiffFit, a differentiable algorithm for fitting protein atomistic structures into an experimental reconstructed Cryo-Electron Microscopy (cryo-EM) volume map. In structural biology, this process is necessary to…

定量方法 · 定量生物学 2025-01-09 Deng Luo , Zainab Alsuwaykit , Dawar Khan , Ondřej Strnad , Tobias Isenberg , Ivan Viola

Non-destructive testing (NDT) is essential in ceramic manufacturing to ensure the quality of components without compromising their integrity. In this context, Optical Coherence Tomography (OCT) enables high-resolution internal imaging,…

Cryo-electron microscopy (cryo-EM), the subject of the 2017 Nobel Prize in Chemistry, is a technology for determining the 3-D structure of macromolecules from many noisy 2-D projections of instances of these macromolecules, whose…

计算机视觉与模式识别 · 计算机科学 2020-04-22 Roy R. Lederman , Joakim Andén , Amit Singer

A fundamental task in human chromosome analysis is chromosome segmentation. Segmentation plays an important role in chromosome karyotyping. The first step in segmentation is to remove intrusive objects such as stain debris and other noises.…

计算机视觉与模式识别 · 计算机科学 2014-09-02 Shervin Minaee , Mehran Fotouhi , Babak Hossein Khalaj

Medical image segmentation is vital for clinical diagnosis, yet current deep learning methods often demand extensive expert effort, i.e., either through annotating large training datasets or providing prompts at inference time for each new…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Xingjian Li , Qifeng Wu , Adithya S. Ubaradka , Yiran Ding , Colleen Que , Runmin Jiang , Jianhua Xing , Tianyang Wang , Min Xu

Cryo-electron microscopy (cryo-EM) has become a tool of fundamental importance in structural biology, helping us understand the basic building blocks of life. The algorithmic challenge of cryo-EM is to jointly estimate the unknown 3D poses…

计算机视觉与模式识别 · 计算机科学 2022-09-01 Axel Levy , Frédéric Poitevin , Julien Martel , Youssef Nashed , Ariana Peck , Nina Miolane , Daniel Ratner , Mike Dunne , Gordon Wetzstein

The Cryo-EM 3D particle reconstruction is essential for identifying protein and uncover the biological mechanism of the macro-molecules. In this paper, we use Kam method for reconstruction. Kam method is \textit{ab-initio}, and it assumes…

定量方法 · 定量生物学 2019-06-21 Yin Xian

(abridged) We develop an algorithm for estimating parameters of a distribution sampled with contamination, employing a statistical technique known as ``expectation maximization'' (EM). Given models for both member and contaminant…

天体物理学 · 物理学 2009-11-13 Matthew G. Walker , Mario Mateo , Edward W. Olszewski , Bodhisattva Sen , Michael Woodroofe

Although defocus can be used to generate partial phase contrast in transmission electron microscope images, cryo-electron microscopy (cryo-EM) can be further improved by the development of phase plates which increase contrast by applying a…

定量方法 · 定量生物学 2024-03-14 Jeremy J. Axelrod , Jessie T. Zhang , Petar N. Petrov , Robert M. Glaeser , Holger Mueller

Constructing of molecular structural models from Cryo-Electron Microscopy (Cryo-EM) density volumes is the critical last step of structure determination by Cryo-EM technologies. Methods have evolved from manual construction by structural…

机器学习 · 计算机科学 2019-02-13 Kui Xu , Zhe Wang , Jiangping Shi , Hongsheng Li , Qiangfeng Cliff Zhang

To assist researchers to identify Environmental Microorganisms (EMs) effectively, a Multiscale CNN-CRF (MSCC) framework for the EM image segmentation is proposed in this paper. There are two parts in this framework: The first is a novel…

计算机视觉与模式识别 · 计算机科学 2021-02-25 Jinghua Zhang , Chen Li , Frank Kulwa , Xin Zhao , Changhao Sun , Zihan Li , Tao Jiang , Hong Li , Shouliang Qi

The in vitro clonogenic assay is a technique to study the ability of a cell to form a colony in a culture dish. By optical imaging, dishes with stained colonies can be scanned and assessed digitally. Identification, segmentation and…

计算机视觉与模式识别 · 计算机科学 2022-02-15 Delmon Arous , Stefan Schrunner , Ingunn Hanson , Nina F. J. Edin , Eirik Malinen

Automated experiments in scanning transmission electron microscopy (STEM) require rapid image segmentation to optimize data representation for human interpretation, decision-making, site-selective spectroscopies, and atomic manipulation.…

The development of robust, real-time optical methods for the detection and tracking of particles in complex multiple scattering media is a problem of practical importance in a number of fields, including environmental monitoring, air…

光学 · 物理学 2025-02-04 Mohammadrasoul Taghavi , Edwin A. Marengo