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- W2059738045 abstract "Chung Shan Institute of Science and TechnologyP.O.Box 1 -2 -6, Lung -tan, Taiwan, Republic of ChinaAbstractImage unstability can be measured by simple, low cost moire pattern sheet. Two types ofmoire are suggested: the linear read out moire and the angular read out moire. A referencesheet with scale is placed on the screen, such that the moire fringes can be produced whenthe reference sheet is overlapping with a grating or a Zone plate pattern which are projectedfrom recorded film. Using this simple technique, the defect of the film flatness can be meas-ured from the slope of the curved moire fringes, and the vibration of the film can be meas-ured by measuring the moire shiftness. An automatic real time test method is also suggestedfor measuring the curved moire fringe and the moire shiftness.IntroductionThe measurement of image unsteadiness has been studied by interferometer, by laser spotand testing ch rtl,2 or by position sensing system3, which are expansive compared to themoire" @default.
- W2059738045 created "2016-06-24" @default.
- W2059738045 creator A5065035151 @default.
- W2059738045 date "1984-05-23" @default.
- W2059738045 modified "2023-10-05" @default.
- W2059738045 title "Low Cost Moire Pattern Sheet For The Analysis Of Image Unstability" @default.
- W2059738045 doi "https://doi.org/10.1117/12.941173" @default.
- W2059738045 hasPublicationYear "1984" @default.
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