文章基本信息

标题：ガウス関数重み付け法によるカラーCRT上複合ラスタモアレパターンの統一的評価
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作者：井上哲彦 ; 小野澤幸男 ; 白井正司等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2001
卷号：55
期号：8-9
页码：1198-1206
DOI：10.3169/itej.55.1198
出版社：The Institute of Image Information and Television Engineers
摘要：To reduce raster moire fringes appearing on color CRTs, a technique to simulate moire patterns is needed. Although it is necessary to know the moire pattern appearing on the entire screen of a CRT, the Fourier analysis technique can be used only for a small area where the parameters can be assumed to be uniform. Because there are many different moire modes, we need different methods to simulate the moire patterns. Therefore before doing a simulation, we must identify the mode. In this respect it is difficult to simulate patterns consisting of combined modes. Also, slot-type shadow masks and dot-type shadow masks must be evaluated and analysis should be performed for any electron beam profile. In this paper, a Gaussian-weighting method is described for moire evaluation. In the method, the luminance of phosphor dots around a particular central dot is weighted depending on the distance from the central dot, which simulates the characteristics of a human eye. By using the method, moire patterns of various modes, including combined modes, can be simulated for the entire screen area.
关键词：カラーCRT;モアレ;ラスタモアレ;電子ビームプロファイル;モアレ変調度