Speckle interferometry: three-dimensional deformation field measurement with a single interferogram

2001 ◽  
Vol 40 (28) ◽  
pp. 5011 ◽  
Author(s):  
Thomas Fricke-Begemann ◽  
Jan Burke
Keyword(s):  
Field Measurement ◽  
Three Dimensional ◽  
Speckle Interferometry ◽  
Deformation Field

scholarly journals Composite Match Index with Application of Interior Deformation Field Measurement from Magnetic Resonance Volumetric Images of Human Tissues

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Penglin Zhang ◽  
Xubing Zhang ◽  
Jiangping Chen
Keyword(s):  
Magnetic Resonance ◽  
Field Measurement ◽  
Three Dimensional ◽  
Deformation Field ◽  
Feature Point ◽  
Actual Condition ◽  
Human Tissues ◽  
Point Matching ◽  
Volumetric Images ◽  
Feature Point Matching

Whereas a variety of different feature-point matching approaches have been reported in computer vision, few feature-point matching approaches employed in images from nonrigid, nonuniform human tissues have been reported. The present work is concerned with interior deformation field measurement of complex human tissues from three-dimensional magnetic resonance (MR) volumetric images. To improve the reliability of matching results, this paper proposes composite match index (CMI) as the foundation of multimethod fusion methods to increase the reliability of these various methods. Thereinto, we discuss the definition, components, and weight determination of CMI. To test the validity of the proposed approach, it is applied to actual MR volumetric images obtained from a volunteer’s calf. The main result is consistent with the actual condition.

scholarly journals A Field Measurement Based Wind Characteristics Analysis of a Typhoon in Near-Ground Boundary Layer

Atmosphere ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 873
Author(s):  
Dandan Xia ◽  
Liming Dai ◽  
Li Lin ◽  
Huaifeng Wang ◽  
Haitao Hu
Keyword(s):  
Turbulence Intensity ◽  
Field Measurement ◽  
Three Dimensional ◽  
Wind Data ◽  
Statistical Characteristics ◽  
Gust Factor ◽  
Characteristics Analysis ◽  
Wind Characteristics ◽  
The Mean ◽  
The Relationship

The field measurement was conducted to observe the wind field data of West Pacific typhoon “Maria” in this research. With the application of ultrasonic anemometers installed in different heights (10 m, 80 m, 100 m) of the tower, the three dimensional wind speed data of typhoon “Maria” was acquired. In addition, vane-type anemometers were installed to validate the accuracy of the wind data from ultrasonic anemometers. Wind characteristics such as the mean wind profile, turbulence intensity, integral length scale, and wind spectrum are studied in detail using the collected wind data. The relationship between the gust factor and turbulence intensity was also studied and compared with the existing literature to demonstrate the characteristics of Maria. The statistical characteristics of the turbulence intensity and gust factor are presented. The corresponding conclusion remarks are expected to provide a useful reference for designing wind-resistant buildings and structures.

Field measurement on the three-dimensional thermal characteristics of a single air inlet induced draft cooling tower

2020 ◽  
Vol 172 ◽  
pp. 115167
Author(s):  
Xuehong Chen ◽  
Fengzhong Sun ◽  
Xin Li ◽  
Huadong Song ◽  
Peng Zheng ◽  
...  
Keyword(s):  
Field Measurement ◽  
Cooling Tower ◽  
Three Dimensional ◽  
Thermal Characteristics ◽  
Air Inlet
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