Filters








67,547 Hits in 3.3 sec

Biophysical Active Contours for Cell Tracking I: Tension and Bending

Jacques Pecreaux, Christophe Zimmer, Jean-christophe Olivo-Marin
2006 2006 International Conference on Image Processing  
Automatic segmentation and tracking of biological objects from dynamic microscopy data is of great interest for quantitative biology.  ...  A successful framework for this task are active contours, curves that iteratively minimize a cost function, which contains both dataattachment terms and regularization constraints reflecting prior knowledge  ...  CONCLUSION We have presented a new regularization energy for active contours based on biophysical knowledge of cell membrane properties.  ... 
doi:10.1109/icip.2006.312796 dblp:conf/icip/PecreauxZO06 fatcat:wmkbepag5vdzxiaf3lk4wjsd54

A Cell Derived Active Contour (CDAC) Method for Robust Tracking in Low Frame Rate, Low Contrast Phase Microscopy - an Example: The Human hNT Astrocyte

Alireza Nejati Javaremi, Charles P. Unsworth, E. Scott Graham, Irene Georgakoudi
2013 PLoS ONE  
Dice coefficient for tracking cell using re-segmentation from user-drawn contour at each frame.  ...  This Cell-Derived Active Contour (CDAC) method is compared with two state-of-the-art segmentation methods for phasecontrast microscopy.  ...  Acknowledgements We would like to thank Ivo Sbalzarini for kindly providing us with sample code and data as well as advising us on the proper parameters to use for the Ambühl algorithm on our data sets  ... 
doi:10.1371/journal.pone.0082883 pmid:24358233 pmcid:PMC3866173 fatcat:uh45wjjj5jbrxcadofkdviqxzu

Active contours for cell tracking

N. Ray, S.T. Acton
Proceedings Fifth IEEE Southwest Symposium on Image Analysis and Interpretation  
This paper introduces an active contour or snakebased method for tracking cells within a video sequence.  ...  Specifically, we apply our cell tracking techniques to rolling leukocytes observed in vivo (in living animal) from video microscopy.  ...  Parametric Active Contours A parametric active contour or snake is a curve, C(s) with parameter s∈ [0, 1] .  ... 
doi:10.1109/iai.2002.999932 dblp:conf/ssiai/RayA02 fatcat:fphcgyc55je5lgdczb4j6fzpui

Quantitative Cell Motility for In Vitro Wound Healing Using Level Set-Based Active Contour Tracking

F. Bunyak, K. Palaniappan, S.K. Nath, T.I. Baskin, Gang Dong
3rd IEEE International Symposium on Biomedical Imaging: Macro to Nano, 2006.  
The segmentation part of the proposed method relies on a level set-based active contour algorithm that robustly handles a large number of cells.  ...  We propose a versatile algorithm for segmentation and tracking of multiple motile epithelial cells during wound healing using time-lapse video.  ...  CONCLUSION AND FUTURE WORK We presented a level-set based active contour method for segmentation and a multi-hypothesis approach for robust tracking of cells.  ... 
doi:10.1109/isbi.2006.1625099 pmid:19578557 pmcid:PMC2705119 dblp:conf/isbi/BunyakPNBD06 fatcat:pyihr454ivde5csxi6xd4ob2ui

Automated cell junction tracking with modified active contours guided by SIFT flow

Chen-Yu Lee, Sukryool Kang, Andrew D. Chisholm, Pamela C. Cosman
2014 2014 IEEE 11th International Symposium on Biomedical Imaging (ISBI)  
active contours with a non-intersection force, and subsequently tracked using SIFT (Scale-Invariant Feature Transform) flow.  ...  We present a novel algorithmic approach to track multiple cell junctions automatically in the developing epidermis of the C. elegans embryo. 3D cell boundaries are projected into 2D for segmentation using  ...  We focus on cell contour lengths computation and cell motility visualization. Cell Contour Length Epidermal cell contour length provides one way to analyze the cell activities.  ... 
doi:10.1109/isbi.2014.6867866 dblp:conf/isbi/LeeKCC14 fatcat:c3fwcaqlxzanphmjiq4ini722e

Extracting neuronal activity signals from microscopy recordings of contractile tissue using B-spline Explicit Active Surfaces (BEAS) cell tracking

Youcef Kazwiny, João Pedrosa, Zhiqing Zhang, Werend Boesmans, Jan D'hooge, Pieter Vanden Berghe
2021 Scientific Reports  
Here we propose a b-spline active contour method to delineate and track neuronal cell bodies based on local and global energy terms. We develop both a single as well as a double-contour approach.  ...  The tracked contours can also serve as landmarks to relocate additional and manually-selected ROIs.  ...  Acknowledgements The authors thank Tobie Martens for manual cell delineation and ROI selection on Ca 2+ recordings. such there was no direct use of animal tissues for this study.  ... 
doi:10.1038/s41598-021-90448-4 pmid:34035411 pmcid:PMC8149687 fatcat:i7dlvchi55awtdgnasqwyep6yi

Coupled edge profile active contours for red blood cell flow analysis

I. Ersoy, F. Bunyak, J. M. Higgins, K. Palaniappan
2012 2012 9th IEEE International Symposium on Biomedical Imaging (ISBI)  
Edge profile active contours in combination with graph coloring based coupling (C-EPAC) are introduced as a robust approach to prevent merges between adjacent, clumped RBCs by modifying the active contour  ...  Physiological properties of blood flow at the microvasculature scale can be measured by tracking the movement and density of red blood cells (RBCs).  ...  active contours (C-GAC).  ... 
doi:10.1109/isbi.2012.6235656 dblp:conf/isbi/ErsoyBHP12 fatcat:zgeqpi4yefhbpf57vgacarmrpi

Intelligent Algorithms for Cell Tracking and Image Segmentation

Ashraf A. Aly, Safaai Bin Deris, Nazar Zaki
2014 International Journal of Computer Science & Information Technology (IJCSIT)  
Where the Active Contour method gave a velocity RMSE of less than 11%, improves to less than 8% by using the novel Algorithm.  ...  and responsible for lacking accuracy in cell tracking techniques.  ...  Level set Active Contour is used for cell segmentation to identify individual cells in every single frame, then the segmentation data for each cell are stored in a file.  ... 
doi:10.5121/ijcsit.2014.6502 fatcat:inwhicbghbhnvjda5v3de6bq7a

Extracting neuronal activity signals from microscopy recordings of contractile tissue: a cell tracking approach using B-spline Explicit Active Surfaces (BEAS) [article]

Youcef Kazwiny, Joao M. Pedroso, Zhiqing Zhang, Werend Boesmans, Jan D'hooge, Pieter Vanden Berghe
2020 bioRxiv   pre-print
Here we propose a b-spline active contour method to delineate and track neuronal cell bodies based on local and global energy terms. We develop both a single as well as a double-contour approach.  ...  The tracked contours can also serve as landmarks to relocate additional and manually-selected ROIs.  ...  Acknowledgements 448 The authors thank Tobie Martens for manual cell delineation and ROI selection on Ca 2+ recordings.  ... 
doi:10.1101/2020.12.15.422837 fatcat:ynby4ivxtzebhl4nka2nnis63i

A New Algorithm For Cell Tracking Technique

Ashraf A. Aly, Safaai Bin Deris, Nazar Zaki
2011 Advanced Computing An International Journal  
First we apply the Topological Alignments and then transformed the output into the input of the active contour model to begin the analysis to the cells boundaries and determine the cells mobility.  ...  The results demonstrate that the proposed algorithm achieve accurate tracking for detecting and analyzing the mobility of the living cells.  ...  Sensitive tracking for moving cells is important to do mathematical modeling to cell locomotion.  ... 
doi:10.5121/acij.2011.2602 fatcat:64wnoit43fhijkuo2mb4pnqmui

A Novel Image Segmentation Enhancement Technique Based on Active Contour and Topological Alignments

Ashraf A. Aly, Safaai Bin Deris, Nazar Zaki
2011 Advanced Computing An International Journal  
The algorithm we propose to develop will based on the active contour method in conjunction with topological alignments method to enhance the image detection approach.  ...  The results show that the algorithm can deal with low contrast images and shape cells, demonstrate the segmentation accuracy under weak image boundaries, which responsible for lacking accuracy in image  ...  To solve this problem with the Active Contour model, we used Topological Alignments method to improve the performance of segmentation of cell tracking and increase the accuracy of cell tracking results  ... 
doi:10.5121/acij.2011.2301 fatcat:xo437hg3yje6hj23mxm7qywsbu

Automatic tracking of biological cells and compartments using particle filters and active contours

Hailin Shen, Glyn Nelson, Stephnie Kennedy, David Nelson, James Johnson, David Spiller, Michael R.H. White, Douglas B. Kell
2006 Chemometrics and Intelligent Laboratory Systems  
Prior information from a particle filter provides a reasonable initialisation for the active contour method and prevents it from being trapped in local minima.  ...  The active contour (AC) method is based on a deformable model and is capable of capturing minor cell shape variations, although a good initialisation is often required.  ...  Acknowledgements The authors thank the DTI (under the terms of the Beacon project), the BBSRC, EPSRC and RSC for financial support, and Steve O'Hagan of the Manchester group for help with reading Carl  ... 
doi:10.1016/j.chemolab.2005.07.007 fatcat:lk63fcdujvdhljx3uiraptn2ee

Segmentation and Tracking of Lymphocytes Based on Modified Active Contour Models in Phase Contrast Microscopy Images

Yali Huang, Zhiwen Liu
2015 Computational and Mathematical Methods in Medicine  
The paper proposes an improved active contour model for segmenting and tracking accurate boundaries of the single lymphocyte in phase-contrast microscopic images.  ...  Active contour models have been widely used in object segmentation and tracking.  ...  The authors would like to thank the president of Beijing You'an Hospital, Ning Li, for providing the microscopic cell images.  ... 
doi:10.1155/2015/693484 pmid:26089973 pmcid:PMC4450762 fatcat:tflzqa2d4fgsrabwibz2g4migu

Cells Tracking by Snakes

Eduardo Perez-Careta, Gabriel Avina-Cervantes, Oliver Debeir, Jose Javier Sanchez-Mondragon, Miguel Torres-Cisneros, Gerardo Herrera Corral, Luis Manuel Montaño Zentina
2008 AIP Conference Proceedings  
Cell tracking based on active contours provide af aster method to performance this task to multitarget problem.  ...  In this paper,acells detection method based on active contours is presented. Active contours or snakes are widely use in image segmentation and tracking problems.  ...  FIGURE 2 . 2 Cells detection and tracking by active contours algorithm. Downloaded 10 Dec 2008 to 148.214.113.129.  ... 
doi:10.1063/1.2979246 fatcat:6fjygvni7zcn5l2okliwilq5ze

Long-term tracking of budding yeast cells in brightfield microscopy: CellStar and the Evaluation Platform

Cristian Versari, Szymon Stoma, Kirill Batmanov, Artémis Llamosi, Filip Mroz, Adam Kaczmarek, Matt Deyell, Cédric Lhoussaine, Pascal Hersen, Gregory Batt
2017 Journal of the Royal Society Interface  
cell contours, and cell size, shape and neighbours relative distances for robust cell tracking.  ...  Active contours with interior Active contours (or snakes [18] ) are a well-known framework for the identification of objects outlines.  ... 
doi:10.1098/rsif.2016.0705 pmid:28179544 pmcid:PMC5332563 fatcat:i4yxhvtn2ndi7phn7hpjsaw7am
« Previous Showing results 1 — 15 out of 67,547 results