Film Mode Signal Processing for EDTV-II and Subjective Assessments

Abstract

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.