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Generation mechanism and evaluation of overall raster moiré patterns on color CRTs
Author(s) -
Inoue T.,
Motousu H.,
Shirai S.,
Oku K.,
Tobe A.,
Mikoshiba S.
Publication year - 2003
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1825670
Subject(s) - crts , moiré pattern , raster graphics , raster scan , optics , scan line , line (geometry) , computer science , physics , computer graphics (images) , geometry , grayscale , mathematics , pixel
— An evaluation technique of overall raster moiré patterns on color CRTs is developed. The technique can simulate any of the moiré modes. Generation mechanisms of various moiré patterns are clarified using the technique. It is found that the moiré patterns, no matter how complicated, consist of four basic types: barrel, pincushion, elliptical, and hyperbolic types. The patterns are found to be sensitive to the scan line distribution. When the scan lines are curved, the pattern appearing on the upper screen is different from that on the lower screen. When the scan lines are tilted, the patterns have horizontal shifts. By observing the moiré patterns, the scan line distribution can be estimated precisely.