Hardware Experiments on Progressive Scan Conversion of an IDTV Receiver Suitable for Telecine Image.
Masahiro Kageyama · The Journal of The Institute of Image Information and Television Engineers · 1992
Telecine images" converted from film images have a lower frame rate than ordinary TV signals.This allows interlaced scan signals to be completely converted into progressive scan signals at IDTV receivers by using the "film-frame-closed" method.In this method, transmitted fields are combined into a TV frame every 2-or 3-field sequences (i.e., every film-frame sequence).Hardware experiments of the above method, including subjective assessments, are descrived in this paper.The experiments clarify the following: (1) On average, the above method improves picture quality between 1 and 1.5 ranks on the CCIR seven-grade scale, compared with the conventional motion adaptive method.(2) Receivers can distinguish telecine images without the need for marker signals.(3) However, when other images, such as subtitles, are super-imposed, the method does not work well.Several solutions to solve this problem are also proposed.1.