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Color Image Computer Desktop Printing System
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《Wuhan University Journal of Natural Sciences》 CAS 1996年第2期213-216,共4页
Color image printing technique on ink jetting printer is introduced.Color shading method such as dithering,Amplitude Modulation(AM)screening and Frequency Modulation(FM)screening is presented.Some solutions to the pro... Color image printing technique on ink jetting printer is introduced.Color shading method such as dithering,Amplitude Modulation(AM)screening and Frequency Modulation(FM)screening is presented.Some solutions to the problems with FM screening are given. An application program under Windows is developed. 展开更多
关键词 color image printing dithering AM screening FM screening
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The First International Digital Printing and Image Technology Exhibition & The Sixth International Exhibition of Quick Printing Equipment & Technology
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《印刷工业》 2008年第2期118-119,共2页
Time: Sept.4-6, 2008Venue: Shenzhen Convention & Exhibition CenterSponsor: Printing and Printing Equipment Industries Association of China (PEIAC)Organizers: The Exhibition Department of
关键词 TECHNOLOGY The First International Digital printing and image Technology Exhibition
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A corrected method of distorted printed circuit board image
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作者 乔闹生 叶玉堂 黄永林 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第1期366-370,共5页
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 ... 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. 展开更多
关键词 distortion correction adaptive control printed circuit board image mean square errorof residual error
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