Fast digital image displacement measurement algorithm: theoretical analysis and simulation

2021 ◽  
Author(s):  
Min Wan ◽  
John J. Healy ◽  
John T. Sheridan
Keyword(s):  
Theoretical Analysis ◽  
Digital Image ◽  
Displacement Measurement ◽  
Image Displacement ◽  
Measurement Algorithm

scholarly journals Measurement for the Thickness of Water Droplets/Film on a Curved Surface with Digital Image Projection (DIP) Technique

Sensors ◽  
2020 ◽  
Vol 20 (8) ◽  
pp. 2409
Author(s):  
Lingwei Zeng ◽  
Hanfeng Wang ◽  
Ying Li ◽  
Xuhui He
Keyword(s):  
Theoretical Analysis ◽  
Systematic Error ◽  
Digital Image ◽  
Systematic Errors ◽  
Curved Surface ◽  
Water Droplets ◽  
Image Projection

Digital image projection (DIP) with traditional vertical calibration cannot be used for measuring the water droplets/film on a curved surface, because significant systematic error will be introduced. An improved DIP technique with normal calibration is proposed in the present paper, including the principles, operation procedures and analysis of systematic errors, which was successfully applied to measuring the water droplets/film on a curved surface. By comparing the results of laser profiler, traditional DIP, improved DIP and theoretical analysis, advantages of the present improved DIP technique are highlighted.

Digital image correlation displacement measurement of a rotating RC helicopter blade

2018 ◽  
Vol 90 ◽  
pp. 371-379 ◽  
Author(s):  
Pedro J. Sousa ◽  
Francisco Barros ◽  
Paulo J. Tavares ◽  
Pedro M.G.P. Moreira
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Displacement Measurement ◽  
Image Correlation ◽  
Helicopter Blade

Theoretical Analysis and Basic Experiments for the 3D Displacement Measurement Using Ring-Shaped Laser Beam

2005 ◽  
Vol 295-296 ◽  
pp. 295-300
Author(s):  
S. Usuki ◽  
Kazuyuki Enami ◽  
M. Hiraki ◽  
S. Takahashi ◽  
Kiyoshi Takamasu
Keyword(s):  
Theoretical Analysis ◽  
Laser Beam ◽  
Optical System ◽  
High Sensitivity ◽  
Displacement Measurement ◽  
Contact Method ◽  
New Ideas ◽  
3D Positioning ◽  
The One ◽  
Basic Experiments

For flexible 3D positioning of a complex 3D mechanism, it is needed to measure 3D displacement of the end-effecter of the mechanism in high precision and by non-contact method. It was common to use plural sensors or scales together to measure the 3D displacement. However, it is difficult to calibrate the sensitivities of the plural sensors or scales. A novel 3D displacement measurement is proposed using an optical system in which lens focuses are collected at the center of the sphere, which has been used for the radius measurement of the sphere. Instead of facing in the XY direction that has high sensitivity, new ideas are necessary for the measurement in the Z direction of the optics where focuses are collected at the center of the sphere. The displacement in the XY direction and the one in the Z direction can be measured at the same time by using a ring-shaped laser beam instead of a simple ray.

scholarly journals Three Dimensional Displacement Measurement Using Ring Beam-Theoretical Analysis and Basic Experiments-

2003 ◽  
Vol 69 (12) ◽  
pp. 1764-1768 ◽  
Author(s):  
Kazuhiro ENAMI ◽  
Shin USUKI ◽  
Masahiko HIRAKI ◽  
Satoru TAKAHASHI ◽  
Kiyoshi TAKAMASU ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Three Dimensional ◽  
Displacement Measurement ◽  
Basic Experiments
Sign in / Sign up

Export Citation Format

Share Document