A corrected method of distorted printed circuit board image |
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| Authors: | Qiao Nao-Sheng Ye Yu-Tang and Huang Yong-Lin |
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| Affiliation: | School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Physics and Electronics, Hunan University of Arts and Science, Changde 415000, China;School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China;School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | This paper proposes a corrected method of distorted image based on adaptive control. First, the adaptive control relationship of pixel point positions between distorted image and its corrected image is given by using polynomial fitting, thus control point pairs between the distorted image and its corrected image are found. Secondly, the value of both image distortion centre and polynomial coefficient is obtained with least square method, thus the relationship of each control point pairs is deduced. In the course of distortion image processing, the gray value of the corrected image is changed into integer with bilinear interpolation. Finally, the experiments are performed to correct two distorted printed circuit board images. The results are perfect and the mean square errors of residual error are tiny. |
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| Keywords: | distortion correction adaptive control printed circuit board image mean square error of residual error |
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