映像情報メディア学会誌
Online ISSN : 1881-6908
Print ISSN : 1342-6907
ISSN-L : 1342-6907
第2世代EDTVに適したフィルムモード信号処理と画質評価実験
影山 昌広吉木 宏吹抜 敬彦
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ジャーナル フリー

1997 年 51 巻 1 号 p. 105-112

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The authors have already proposed introducing “film mode” signal processing into EDTV-II. In the mode, I-P (interlaced to progressive) scan conversion of film images can be theoretically improved without a VT helper signal by using a reserved bit of the EDTV-II signaling codes as a film mode signaling code. In this paper, they propose an improved signaling method which can be applied to various frame rates of original films by indicating whether the current field has been generated from the same film frame as the previous field. They also implemented a signaling code regenerator and a film mode I-P scan converter, and clarified picture quality by using subjective assessments. The assessments showed that the picture quality decoded in the film mode was generally better than the one in the current EDTV-II mode.

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