Application of laser speckle pattern analysis for plant sensing

2013 ◽  
Author(s):  
Xu Zhong ◽  
Xuezhi Wang ◽  
Nicola Cooley ◽  
Peter Farrell ◽  
Bill Moran
Keyword(s):  
Pattern Analysis ◽  
Speckle Pattern ◽  
Laser Speckle

scholarly journals Multi-dimensional Assessment of Precision Machined Surface Texture Based on Laser Speckle Pattern Analysis

Procedia CIRP ◽  
2015 ◽  
Vol 33 ◽  
pp. 251-256 ◽  
Author(s):  
Motochika Shimizu ◽  
Hiroshi Sawano ◽  
Hayato Yoshioka ◽  
Hidenori Shinno
Keyword(s):  
Surface Texture ◽  
Pattern Analysis ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Machined Surface ◽  
Dimensional Assessment

On-Machine Surface Texture Measuring System Using Laser Speckle Pattern Analysis

2016 ◽  
Vol 10 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Motochika Shimizu ◽  
◽  
Hiroshi Sawano ◽  
Hayato Yoshioka ◽  
Hidenori Shinno ◽  
...  
Keyword(s):  
Surface Texture ◽  
Machine Surface ◽  
Vibration Isolation ◽  
Pattern Analysis ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Surface Structures ◽  
Measuring System ◽  
Machined Surface ◽  
Machining System

Functional surfaces are expected technologies in various industries. However, the efficient generation of microscale surface structures is difficult because the process relies on precision surface texture assessments, which require long measuring times. An on-machine measuring system may solve this issue. In this study, a new on-machine surface texture measuring system based on laser speckle pattern analysis is proposed. The proposed system efficiently assesses various qualities of the surface texture, such as surface roughness, undulation of microscale surface structures, and anisotropy, from a laser speckle pattern obtained from the precision-machined surface. For precise measurements, disturbances caused by the machining system itself and the environment must be avoided. The laser speckle detection unit in the proposed system is supported by non-contact active vibration-isolation units, which reduce the transmission of ground vibrations. From the experimental results, the system indicated high repeatability in measurements and robustness against disturbances.

scholarly journals Resolving transitions in the mesoscale domain configuration in VO2 using laser speckle pattern analysis

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Katyayani Seal ◽  
Amos Sharoni ◽  
Jamie M. Messman ◽  
Bradley S. Lokitz ◽  
Robert W. Shaw ◽  
...  
Keyword(s):  
Pattern Analysis ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Domain Configuration

Surface texture assessment of ultra-precision machined parts based on laser speckle pattern analysis

2014 ◽  
Vol 38 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Motochika Shimizu ◽  
Hiroshi Sawano ◽  
Hayato Yoshioka ◽  
Hidenori Shinno
Keyword(s):  
Surface Texture ◽  
Pattern Analysis ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Machined Parts ◽  
Ultra Precision

THE ENDPOINT OF LASER SPECKLE PATTERN MERIDIONAL REFRACTION

1975 ◽  
Vol 52 (9) ◽  
pp. 582-586 ◽  
Author(s):  
William F. Long ◽  
Charles L. Haine
Keyword(s):  
Speckle Pattern ◽  
Laser Speckle
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