PTZ Camera-based Image Processing for Automatic Crack Size Measurement in Expressways

2021 ◽  
pp. 1-1
Author(s):  
Chunyan Shao ◽  
Limin Zhang ◽  
Wang Pan
Keyword(s):  
Image Processing ◽  
Crack Size ◽  
Size Measurement ◽  
Ptz Camera

Detection System about Train Brake Discs' Cracks Based on Image Processing

2014 ◽  
Vol 513-517 ◽  
pp. 2831-2834
Author(s):  
Gui Ming Shi ◽  
Meng Lv ◽  
Chang Liu ◽  
Qing Tao Wei
Keyword(s):  
Image Processing ◽  
Detection System ◽  
Crack Size ◽  
Brake Disc ◽  
Pixel Size ◽  
Image Preprocessing ◽  
Running Safety ◽  
Factors Influencing ◽  
Brake Discs ◽  
Main Factors

The reliability of the brake disc is one of the main factors influencing running safety. This paper introduces the causes and harm of train brake disc crack, the application of digital image acquisition technology, and image processing function in MATLAB. We research a method of image preprocessing and subsequent processing by programming language, give effect drawing in each phase, and calculate the pixel size through effective extraction based on the crack characteristics. At last the condition of crack size and actual area is presented. The study can provide a reference for monitoring personnel replace the brake disc timely.

A comparative study on crack size measurement

1991 ◽  
Vol 47 (1) ◽  
pp. R11-R16 ◽  
Author(s):  
Sova Bhattacharya ◽  
A. N. Kumar
Keyword(s):  
Comparative Study ◽  
Crack Size ◽  
Size Measurement

Powder Particle Size Measurement with Digital Image Processing Using Matlab

2012 ◽  
Vol 443-444 ◽  
pp. 589-593 ◽  
Author(s):  
Li Cai Wu ◽  
Chuang Yu
Keyword(s):  
Image Processing ◽  
Particle Size ◽  
Digital Image Processing ◽  
Powder Particle ◽  
Processing Method ◽  
Good Effect ◽  
Powder Particle Size ◽  
Size Measurement ◽  
Particle Size Measurement ◽  
Sem Image

The application of powder particle size measurement in engineering field are introduced, the major powder particle size research methods are also included. Furthermore we analyzed the characteristics of these methods. Based on these, we proposed a method, which makes full use of Matlab to process and analyze the SEM image of powders to get powder particle size and the distribution, and the method achieve a good effect. Finally, In order to verify the processing method, the authors performed an example of the approach. Based on the results, it can be confirmed, therefore, the method using MATLAB is convenient to analyze the powder particle size.

Focus-independent particle size measurement from streak images: a comparison of multivariate methods

The Analyst ◽  
2015 ◽  
Vol 140 (5) ◽  
pp. 1578-1589
Author(s):  
Shawna K. Tazik ◽  
Megan R. Pearl ◽  
Cameron M. Rekully ◽  
Nicholas S. Viole ◽  
Stephanie A. DeJong ◽  
...  
Keyword(s):  
Image Processing ◽  
Particle Size ◽  
Multivariate Calibration ◽  
Multivariate Methods ◽  
Size Measurement ◽  
Particle Size Measurement ◽  
Independent Particle ◽  
Fluorescent Particles

Fluorescent particles in-flow are imaged and sized regardless of their degree of focus using image processing and multivariate calibration.

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