Temporal segmentation of laparoscopic videos into surgical phases

2016 ◽  
Author(s):  
Manfred Jurgen Primus ◽  
Klaus Schoeffmann ◽  
Laszlo Boszormenyi
Keyword(s):  
Temporal Segmentation ◽  
Laparoscopic Videos

scholarly journals Spatio-temporal Segmentation Based Adaptive Compression of Dynamic Mesh Sequences

2020 ◽  
Vol 16 (1) ◽  
pp. 1-24
Author(s):  
Guoliang Luo ◽  
Zhigang Deng ◽  
Xin Zhao ◽  
Xiaogang Jin ◽  
Wei Zeng ◽  
...  
Keyword(s):  
Dynamic Mesh ◽  
Temporal Segmentation ◽  
Adaptive Compression ◽  
Spatio Temporal

scholarly journals Spatio-temporal feature learning with reservoir computing for T-cell segmentation in live-cell $$\hbox {Ca}^{2+}$$ fluorescence microscopy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fatemeh Hadaeghi ◽  
Björn-Philipp Diercks ◽  
Daniel Schetelig ◽  
Fabrizio Damicelli ◽  
Insa M. A. Wolf ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Cell Activation ◽  
Cell Activation ◽  
Short Term Memory ◽  
Live Cell ◽  
Cell Segmentation ◽  
Reservoir Computing ◽  
Imaging Data ◽  
Temporal Segmentation

AbstractAdvances in high-resolution live-cell $$\hbox {Ca}^{2+}$$ Ca 2 + imaging enabled subcellular localization of early $$\hbox {Ca}^{2+}$$ Ca 2 + signaling events in T-cells and paved the way to investigate the interplay between receptors and potential target channels in $$\hbox {Ca}^{2+}$$ Ca 2 + release events. The huge amount of acquired data requires efficient, ideally automated image processing pipelines, with cell localization/segmentation as central tasks. Automated segmentation in live-cell cytosolic $$\hbox {Ca}^{2+}$$ Ca 2 + imaging data is, however, challenging due to temporal image intensity fluctuations, low signal-to-noise ratio, and photo-bleaching. Here, we propose a reservoir computing (RC) framework for efficient and temporally consistent segmentation. Experiments were conducted with Jurkat T-cells and anti-CD3 coated beads used for T-cell activation. We compared the RC performance with a standard U-Net and a convolutional long short-term memory (LSTM) model. The RC-based models (1) perform on par in terms of segmentation accuracy with the deep learning models for cell-only segmentation, but show improved temporal segmentation consistency compared to the U-Net; (2) outperform the U-Net for two-emission wavelengths image segmentation and differentiation of T-cells and beads; and (3) perform on par with the convolutional LSTM for single-emission wavelength T-cell/bead segmentation and differentiation. In turn, RC models contain only a fraction of the parameters of the baseline models and reduce the training time considerably.

Keyframe selection for robust pose estimation in laparoscopic videos

2012 ◽  
Author(s):  
Udo von Öhsen ◽  
Jan Marek Marcinczak ◽  
Andres F. Mármol Vélez ◽  
Rolf-Rainer Grigat
Keyword(s):  
Pose Estimation ◽  
Keyframe Selection ◽  
Selection For ◽  
Laparoscopic Videos

Temporal segmentation and recognition of team activities in sports

2018 ◽  
Vol 29 (5) ◽  
pp. 891-913
Author(s):  
Cem Direkoǧlu ◽  
Noel E. O’Connor
Keyword(s):  
Temporal Segmentation

A universal constant in temporal segmentation of human speech

1992 ◽  
Vol 79 (10) ◽  
pp. 479-480 ◽  
Author(s):  
M. Vollrath ◽  
J. Kazenwadel ◽  
H.-P. Kr�ger
Keyword(s):  
Universal Constant ◽  
Temporal Segmentation ◽  
Human Speech

Communication Principle of Literature Database Based on Spatial and Temporal Segmentation Technology

2014 ◽  
Vol 543-547 ◽  
pp. 2418-2421
Author(s):  
Yong Wang
Keyword(s):  
High Performance ◽  
Database System ◽  
Lake Area ◽  
Temporal Segmentation ◽  
New Town ◽  
Database Construction ◽  
Poyang Lake Area ◽  
The Mathematical Model ◽  
And Storage ◽  
Computer Resources

In this paper we introduce cross tree and block mathematical principles into the design of database system, divide the time sequence and storage space of computer database system, establish the mathematical model and algorithm of computer resources database system, and design the test database system. In this paper, we use high performance interface of Display Port, by way of coupling to communicate on two port control, and use RHEL 6.2 Linux virtual machine to do simulation experiment on process of database system. Through the simulation we find the API which is called by Read, Close, Mmap, Stat, Fstat is similar. It is consistent with the actual situation, and verifies the reliability of the program. Finally, we apply the database system to the network database construction of sports literature resources in the new town of Poyang Lake area. It reaches the effect that sport resources are shared by all. It provides technical support for the application of computer database system.

Sign in / Sign up

Export Citation Format

Share Document