scholarly journals An Algorithm for the Detection of Circular Elements in Engineering Design

2020 ◽  
Vol 7 (1) ◽  
pp. E6-E9 ◽  
Author(s):  
D. K. Bonello ◽  
Y. Iano ◽  
U. B. Neto
Keyword(s):  
Computer Vision ◽  
Pattern Recognition ◽  
Engineering Design ◽  
Digital Image ◽  
Blood Cells ◽  
Printed Circuit Boards ◽  
White Blood Cells ◽  
Circuit Boards ◽  
Circle Detection ◽  
Printed Circuit

Various concentrated works have been done in the area of computational vision regarding the circle and texture detections. Detection of circles in images can be beneficial for PCB components industries for the detection of capacitors in printed circuit boards, also for medicine in the detection of red cells, white blood cells, and leukocytes, and for applications which requires precision and assignments regarding the detection of circles in a digital image. In this work is utilized a benchmarking of images to detection circle boards of different radio values for the comparison with the work [1] of this article. The benchmarking of images is composed of five main images that are tested in the algorithm of detection of circles in MATLAB with different values of radio for each image. The results appoint an enhancement of 300 % concerning the algorithm proposed in work [1] showed in this article. In this work also would be plotted graphs concerning the accuracy of the new proposed algorithm with relation to the algorithm proposed in work [1], indicating better results concerning the GUI interfaces and capacity of detection circles. Keywords: computer vision, pattern recognition, an algorithm of detection, circle detection, parameter identification.

scholarly journals A tool for errors detection in printed circuit boards production

2009 ◽  
Vol 7 (01) ◽  
Author(s):  
A. De Luca Pennacchia ◽  
L. G. De la Fraga ◽  
U. Martí­nez Hernández
Keyword(s):  
Image Processing ◽  
Integrated Circuits ◽  
Digital Image Processing ◽  
Digital Image ◽  
Printed Circuit Boards ◽  
Software Tool ◽  
Reference Points ◽  
Surface Mount Technology ◽  
Circuit Boards ◽  
Printed Circuit

The progressive implementation of software functions in Integrated Circuits (ICs) has considerably increased the number of transistors and pin connections of ICs. For that reason, Printed Circuit Boards (PCBs) are fabricated with the Surface Mount Technology (SMT) nowadays and IC mounting on PCB is a crucial process that requires high precision. An Automatic Mechanical Montage (AMM) system is used to mount ICs on the sockets using a couple of reference points for every IC in order to find the correct positions for mounting the IC. Due to some factors in the process of PCB development, there are differences between designed and manufactured PCBs, which could generate delays in their production. In this work, a software tool which allows to work with digital images of PCBs is described. This tool finds the differences generated in PCB development, especially the differences in IC reference points using Digital Image Processing (DIP) techniques.

Slit Effect of Common Ground Patterns in Affecting Cross-Talk Noise between Two Parallel Signal Traces on Printed Circuit Boards

2008 ◽  
Vol 128 (11) ◽  
pp. 657-662 ◽  
Author(s):  
Tsuyoshi Maeno ◽  
Yukihiko Sakurai ◽  
Takanori Unou ◽  
Kouji Ichikawa ◽  
Osamu Fujiwara
Keyword(s):  
Cross Talk ◽  
Printed Circuit Boards ◽  
Common Ground ◽  
Circuit Boards ◽  
Printed Circuit
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