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长春光学精密机械与物... [1]
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会议论文 [1]
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2012 [1]
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A brightness and color correction method of LED display based on CCD camera (EI CONFERENCE)
会议论文
2012 International Applied Mechanics, MechatronicsAutomation and System Simulation Meeting, AMMASS 2012, June 24, 2012 - June 26, 2012, Hangzhou, China
Zhao Z.
;
Wang R.
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提交时间:2013/03/25
The correction methods of LED displays are aiming to address the uniform issues which includes brightness aspect and color aspect. The correction method use a 33 correction coefficients matrix to reshape the pulse width of each LED. To calculate the correction coefficients
a linear system is established
which includes a color CCD and a LED display. And a correction algorithm is introduced based on the color CCD. This algorithm describes the relationships of the main color components of a LED
when the gray level of a LED is increasing or decreasing
the three main color components would change according to the correction coefficients. The results shows that the correction based on this algorithm improved the performance of LED displays. (2012) Trans Tech Publications
Switzerland.
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