Geometrical information extraction from laser speckle pattern images using texture analysis

2006 ◽  
Author(s):  
Rong-Sheng Lu
Keyword(s):  
Information Extraction ◽  
Texture Analysis ◽  
Speckle Pattern ◽  
Laser Speckle ◽  
Geometrical Information

Surface Roughness Extraction by Gibbs Random Fields of Laser Speckle Pattern Texture

2012 ◽  
Vol 629 ◽  
pp. 515-520
Author(s):  
Lei Yang ◽  
Rong Sheng Lu ◽  
Zhi Jian Liu ◽  
Li Qiao Lei
Keyword(s):  
Surface Roughness ◽  
Texture Analysis ◽  
Diode Laser ◽  
Random Fields ◽  
Speckle Pattern ◽  
Digital Camera ◽  
Texture Features ◽  
Laser Speckle ◽  
Speckle Patterns ◽  
Gibbs Random Fields

Based on computer texture analysis methods, the relationships between laser speckle texture features of grinding surfaces and surface roughness are investigated. The laser speckle texture pictures of different surface roughness are acquired by a simple equipment which consists of a digital camera and a diode laser. The texture method based on Gibbs Random Fields model is used to analyze laser speckle patterns. Gibbs texture features with the second-order neighborhood are extracted. The experiment results display that the surface roughness information included in the laser speckle texture pictures is monotonous withβ2~β5 Gibbs texture features. For comparing, normalized texture features has been done. This method can extract object’s surface roughness information which is the same material and machined by the same method through calibrating beforehand.

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

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
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