scholarly journals Homography based parallel volume intersection: toward real-time volume reconstruction using active cameras

2002 ◽  
Author(s):  
T. Wada ◽  
Xiaojun Wu ◽  
S. Tokai ◽  
T. Matsuyama
Keyword(s):  
Real Time ◽  
Volume Reconstruction ◽  
Parallel Volume ◽  
Volume Intersection

scholarly journals Light sheet based volume flow cytometry (VFC) for rapid volume reconstruction and parameter estimation on the go

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Prashant Kumar ◽  
Prakash Joshi ◽  
Jigmi Basumatary ◽  
Partha Pratim Mondal
Keyword(s):  
Parameter Estimation ◽  
Real Time ◽  
High Throughput ◽  
Physiological State ◽  
Volume Visualization ◽  
Disease Diagnosis ◽  
Critical Parameters ◽  
Single Shot ◽  
Volume Reconstruction ◽  
Over Time

AbstractOptical imaging is paramount for disease diagnosis and to access its progression over time. The proposed optical flow imaging (VFC/iLIFE) is a powerful technique that adds new capabilities (3D volume visualization, organelle-level resolution, and multi-organelle screening) to the existing system. Unlike state-of-the-art point-illumination-based biomedical imaging techniques, the sheet-based VFC technique is capable of single-shot sectional visualization, high throughput interrogation, real-time parameter estimation, and instant volume reconstruction with organelle-level resolution of live specimens. The specimen flow system was realized on a multichannel (Y-type) microfluidic chip that enables visualization of organelle distribution in several cells in-parallel at a relatively high flow-rate (2000 nl/min). The calibration of VFC system requires the study of point emitters (fluorescent beads) at physiologically relevant flow-rates (500–2000 nl/min) for determining flow-induced optical aberration in the system point spread function (PSF). Subsequently, the recorded raw images and volumes were computationally deconvolved with flow-variant PSF to reconstruct the cell volume. High throughput investigation of the mitochondrial network in HeLa cancer cell was carried out at sub-cellular resolution in real-time and critical parameters (mitochondria count and size distribution, morphology, entropy, and cell strain statistics) were determined on-the-go. These parameters determine the physiological state of cells, and the changes over-time, revealing the metastatic progression of diseases. Overall, the developed VFC system enables real-time monitoring of sub-cellular organelle organization at a high-throughput with high-content capacity.

scholarly journals The MUSiiC Toolkit: Modular Real-Time Toolkit for Advanced Ultrasound Research

2010 ◽  
Author(s):  
Philipp Stolka ◽  
Hyun-jae Kang ◽  
Emad Boctor
Keyword(s):  
Real Time ◽  
Rapid Development ◽  
Experimental System ◽  
Building Blocks ◽  
Third Party ◽  
Time Data ◽  
Volume Reconstruction ◽  
Open Standard ◽  
External Software ◽  
Imaging Research

Ultrasound is a very useful and convenient modality in medical imaging, due to its relatively small footprint, high resolution, negligible adverse effects, and real-time imaging capability – in spite of its well-known artifacts. However, it is fairly difficult to fully benefit from its resolution and speed in advanced imaging research because of the closed nature of most ultrasound systems.We propose a modular and extensible open-source toolkit MUSiiC S/W for rapid development and system setup for ultrasound research. Aimed at algorithm and experimental system builders as well as at clinical research, it allows standardized access to various types of ultrasound-derived real-time data streams, incorporates various tracking facilities, volume reconstruction, and connections to external software tools. By providing well-defined open standard interfaces between those building blocks, we aim at easy extensibility for third-party researchers.

A Comparison between QLAB and TomTec Full Volume Reconstruction for Real Time Three-Dimensional Echocardiographic Quantification of Left Ventricular Volumes

2007 ◽  
Vol 24 (9) ◽  
pp. 967-974 ◽  
Author(s):  
Osama I.I. Soliman ◽  
Boudewijn J. Krenning ◽  
Marcel L. Geleijnse ◽  
Attila Nemes ◽  
Robert-Jan van Geuns ◽  
...  
Keyword(s):  
Real Time ◽  
Three Dimensional ◽  
Left Ventricular ◽  
Left Ventricular Volumes ◽  
Volume Reconstruction ◽  
Ventricular Volumes ◽  
Full Volume

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

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