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A New Image Enhancement Algorithm for PCB Defect Detection

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2 Author(s)
Shu-an Guan ; Dept. of Comput. & Inf. Eng., Wuhan Polytech. Univ., Wuhan, China ; Fenglin Guo

According to the PCB image feature in a PCB defect detection project, we studied a new image enhancement algorithm: double sigmoid transformation and also deduced the transformation arithmetic operator. Practical project experiments show that the new algorithm can effectively sharpen PCB image edges, at same time it can filter out noise in the image. Even if the original PCB image is not distinct enough and uniform brightness, the algorithm is able to precisely locate circuit edge, which can make the edge extracting and edge recognition easier.

Published in:

Intelligence Science and Information Engineering (ISIE), 2011 International Conference on

Date of Conference:

20-21 Aug. 2011