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《Optical Instruments》 2007-05
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Primary colors′ coordinates calibration in multi-DLP projection display wall

GUO Xiao-ying1,2,WEI Wei1,LI Hai-feng1(1.State Key Laboratory of Modern Optical Instrumentation,Zhejiang University,Hangzhou 310027,China;2.Cyber Opto-Electronical Technology Co.,Ltd.,Hangzhou 310018,China)  
Known from the color reproduction principle of chromaticity theory,the color uniformity of multi-DLP projection display wall is decided by primary colors′ coordinates and their luminance of each display unit.The common color uniformity calibration is used to adjusting the luminance of the primary colors.Such method can′t remove the aberration ultimately.Here a new method of color uniformity calibration is introduced.The method is to reduce the color space and obtain a new color triangle which is included in all projectors′ color space for the goal of the calibration.The color space conversion matrix in each projector is rebuilt in order to convert the primary colors′ coordinates to the new color space.Combined with the luminance adjustment,the display wall can remove the aberration ultimately in theory.
【CateGory Index】: TB857
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