Bare PCB inspection for Track cut, Track Short and Pad Damage using simple Image Processing Operations
Anitha D B1, Mahesh Rao2

1RAnitha D B, ECE Department, VVIET, Mysore, India.
2Mahesh Rao, ECE Department, MIT, Mysore, India.
Manuscript received on July 20, 2019. | Revised Manuscript received on August 10, 2019. | Manuscript published on August 30, 2019. | PP: 2578-2587 | Volume-8 Issue-6, August 2019. | Retrieval Number: F8739088619/2019©BEIESP | DOI: 10.35940/ijeat.F8739.088619
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Abstract: In this paper most commonly occurring Bare PCB defects such as Track Cut, Track short and Pad Damages are detected by Image processing techniques. Reference PCB without having any defects is compared with test PCB having defects to identify the defects and x-y coordinates of the center of the defects along with radii are obtained using Difference of Gaussian method and location of the individual type of defects are marked either by similar color or different colors. Result Analysis includes time taken for the inspection of a single defect, multiple similar defects, and multiple different defects. Time taken is ranging from 1.674 to 1.714 seconds if the individual type of defects are marked by different colors and 0.670 to 0.709 seconds if all the identified defects are marked by the same colors.
Keywords: Printed Circuit Board, Difference of Gaussian, Mean thresholding, Defect Detection, Localization