Low Cost Moire Pattern Sheet For The Analysis Of Image Unstability

Rong-Seng Chang

doi:10.1117/12.941173

23 May 1984 Low Cost Moire Pattern Sheet For The Analysis Of Image Unstability

Rong-Seng Chang

Proceedings Volume 0462, Optics in Entertainment II; (1984) https://doi.org/10.1117/12.941173
Event: 1984 Los Angeles Technical Symposium, 1984, Los Angeles, United States

Abstract

Image unstability can be measured by simple, low cost moire pattern sheet. Two types of moire are suggested: the linear read out moire and the angular read out moire. A reference sheet with scale is placed on the screen, such that the moire fringes can be produced when the reference sheet is owerlapping with a grating or a Zone plate pattern which are projected from 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 measured by measuring the moire shiftness. An automatic real time test method is also suggested for measuring the curved moire fringe and the moire shiftness.

Citation Download Citation

Rong-Seng Chang "Low Cost Moire Pattern Sheet For The Analysis Of Image Unstability", Proc. SPIE 0462, Optics in Entertainment II, (23 May 1984); https://doi.org/10.1117/12.941173

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