Yukio Sugiura

Time Sensitive Evaluation of the Quality of Digitally Coded Sequences

The authors have developed an experimental device suitable for verifying whether assessors can subjectively evaluate temporal variations in picture quality. They also developed a technique suitable for processing opinion scores obtained by means of their device. This new method, the single-stimulus temporally continuous evaluation (SSTCE) method, can solve some problems associated with the single-stimulus continuous quality evaluation (SSCQE) method recommended by the ITU-R, and is more effective for evaluating the time-varying quality of television sequences.

A 70-mm Film Laser Telecine for High-Definition Television

This paper details a new telecine for use in high-definition television. The telecine incorporates a laser flying spot scanner, and was designed to use 70-mm motion-picture film to obtain better picture quality. An outline of principles is presented, as well as the features, configurations, and characteristics of the new laser telecine.

Reduction of Motion Judder on Video Images Converted from Film

Video images converted from films show unnatural reproduction of movement. To correct this, it is necessary to utilize a motion compensation technique that has already been employed for television standards conversion. We modified an existing high-definition television (HDTV) standards converter by adding the necessary functions for motion-compensated film-to-video conversion. To test the practicality of the modified converter, we detected motion vectors on it by using the video signals of images already converted from film by a telecine. Then we interpolated the images using the detected motion vectors to compensate for movement. The result was less unnatural movement and better quality moving images with respect to film-to-video conversion.

HDTV Laser-Beam Recording on 35mm Color Film and its Application to Electro-Cinematography

NHK a developpe un enregistreur a faisceau laser qui transfert des signaux de television a haute definition a des films 35 mm de cinematographie

Motion Estimation Method Using the Spatiotemporal Characteristics of Moving Objects

This paper presents a motion vector detection method that takes into account the spatiotemporal continuity of motion vectors and the local characteristics of pictures. First, we discuss tracing motion vector trajectories to assess the spatiotemporal continuity of motion vectors and a method of motion vector detection using motion vector reliability. Next, we explain a motion vector estimation method in which the local characteristics of pictures are considered. This method consists of the removal of erroneously detected motion vectors by use of the luminance correlation of pictures to assign detected vectors. In conclusion, it is shown by simulation that these methods produce beneficial results for the improvement of motion vector detection.

Laser telecine for HDTV

This paper describes a laser telecine which has been developed for transferring film images into HDTV signals with high picture quality. In this equipment the film image is directly scanned by a laser beam concentrated onto a small spot with high intensity so that both high resolution and a high S/N ratio can be obtained. This equipment has already been delivered to the broadcasting station and are being used to create HDTV programs using 35mm films.

Laser film recorder for HDTV

This paper describes a high-picture-quality laser film recorder developed for HDTV movie production applications. This equipment can directly record HDTV pictures in realtime onto a low-sensitivity fine grain color film using three laser beams of red green and blue. A practical model has already been developed introduced into production studios and is being used for movie production. 1 .

Color Television Film Recording by Using Laser Beam

レーザーを用いてテレビ信号を16ミリカラーフィルムに録画する, レーザー録画装置を試作した.この装置を使って, カラーリバーサルフィルムやカラープリントフィルム等への録画実験を行い, レーザー録画がキネレコにくらべ画質が改善されることを示した.特に, カラープリントフィルムへの録画は従来にない高品質のもので, フィルムの価格がキネレコに現用されているリバーサルフィルムの1/4-1/5という運用上の利点がある.