Title :
A Concise and Rapid Error Correction Algorithm in Automatic Optical Inspection of Solder Paste
Author :
Wu, Jianjie ; Chen, Zhongbing
Author_Institution :
Sch. of Software Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
Image-array-based automatic optical inspection system captures multiple images of the inspected printed circuit board through synchronous exposure. Therefore a correct mosaic of images is very import to subsequent solder paste inspection. However, Design error of the mechanism always leads to geometric errors in the image such as translation, rotation and scaling distortion. These errors make severe displacements in the image. To solve such problems, a concise and rapid error correction algorithm is proposed base on multiple point interpolation. Experiments show that the algorithm can assure rapid and correct mosaic of images of the whole printed circuit board.
Keywords :
automatic optical inspection; error correction; image segmentation; interpolation; printed circuit testing; printed circuits; solders; design error; error correction algorithm; geometric errors; image array based automatic optical inspection system; image mosaic; inspected printed circuit board; multiple point interpolation; solder paste inspection; synchronous exposure; Algorithm design and analysis; Cameras; Error correction; Inspection; Interpolation; Standards Board; Automatic Optical Inspection; Geometric Error; Image Array; Multiple Point Interpolation;
Conference_Titel :
Internet Computing & Information Services (ICICIS), 2011 International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4577-1561-7
DOI :
10.1109/ICICIS.2011.85
