Measurement system based on a high-speed camera and image processing techniques for testing of spacecraft subsystems

2005 ◽  
Author(s):  
Gianluca Casarosa ◽  
Bruno Sarti
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
High Speed ◽  
High Speed Camera ◽  
Image Processing Techniques ◽  
Processing Techniques

Image processing techniques in 3-D foot shape measurement system

2008 ◽  
Author(s):  
Guozhong Liu ◽  
Ping Li ◽  
Boxiong Wang ◽  
Hui Shi ◽  
Xiuzhi Luo
Keyword(s):  
Image Processing ◽  
Measurement System ◽  
Shape Measurement ◽  
Image Processing Techniques ◽  
Processing Techniques

A New Measurement System of Yarn Appearance Based on Machine Vision

2014 ◽  
Vol 945-949 ◽  
pp. 1810-1814
Author(s):  
Jun Juan Li ◽  
Chen Wang ◽  
Wen Xiao Tu ◽  
Bao Qi Zuo
Keyword(s):  
Image Processing ◽  
Machine Vision ◽  
Measurement System ◽  
Coefficient Of Variation ◽  
Suitable Method ◽  
Main Body ◽  
Image Processing Techniques ◽  
Image Acquisition System ◽  
Processing Techniques ◽  
Morphological Opening

In this paper, a new yarn appearance measurement system based on machine vision is introduced. The yarn images are continuously captured by image acquisition system. To extract the main body of the yarn accurately, the yarn images are processed sequentially with threshold segmentation and morphological opening operation. Then the coefficient of variation (CV value) of diameter is calculated to characterize the yarn evenness. The measurement process achieves result (CV value) which can be compared with USTER evenness tester by image processing techniques. By comparing different methods which use different algorithms, a suitable method is chosen to be used in this new measurement system. Then a more accurate, more efficient and faster measurement system will meet requirements in the future.

IC Assembly Product Inspection Using Image Processing Techniques

2011 ◽  
Vol 145 ◽  
pp. 209-213
Author(s):  
Hsi Chieh Lee ◽  
Shao Hsuan Chang
Keyword(s):  
Image Processing ◽  
Success Rate ◽  
Measurement System ◽  
Process Time ◽  
Automatic Identification ◽  
Circuit Boards ◽  
Image Identification ◽  
Image Processing Techniques ◽  
Processing Techniques ◽  
Product Specifications

In this study, we present an image identification and measurement system for examining and testing the packaged semiconductor specifications. Most semiconductor processes rely on measurement gauges or inspectors to examine the finished product specifications visually. Measurement gauges are costly; inspectors have to be trained professionally and their performance depends on the maturity of their skills, which requires enormous costs, time, and efforts. Therefore, an automatic identification and measurement system will not only reduce costs, but minimize the complexity of measurement, thereby upgrading the effectiveness of manpower significantly. Experiments were conducted using 1657 BMP images with 640 * 480 pixels taken with a semiconductor machine. These images are snapshots randomly taken from of a variety of the 7.2 cm * 4.8 cm Substrate circuit boards each includes 180 pieces of 30 * 6 IC packaged products. Promising results were derived where 1492 out of 1657 product images were successfully detected and measured. In addition to the 90.04% success rate for inspection, the process time is reduced significantly to about 1/6 as compared to human professionals.

Image processing techniques for high-speed videometry in horizontal two-phase slug flows

2013 ◽  
Vol 33 ◽  
pp. 257-264 ◽  
Author(s):  
C.E.F. do Amaral ◽  
R.F. Alves ◽  
M.J. da Silva ◽  
L.V.R. Arruda ◽  
L. Dorini ◽  
...  
Keyword(s):  
Image Processing ◽  
High Speed ◽  
Two Phase ◽  
Image Processing Techniques ◽  
Slug Flows ◽  
Processing Techniques

scholarly journals Image Processing Techniques for Shock Wave Detection and Tracking in High Speed Schlieren and Shadowgraph Systems

2019 ◽  
Vol 1215 ◽  
pp. 012021 ◽  
Author(s):  
Guoshuai Li ◽  
Muhammed Burak Agir ◽  
Konstantinos Kontis ◽  
Takahiro Ukai ◽  
Sriram Rengarajan
Keyword(s):  
Shock Wave ◽  
Image Processing ◽  
High Speed ◽  
Image Processing Techniques ◽  
Wave Detection ◽  
Detection And Tracking ◽  
Processing Techniques
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