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Proceedings Paper

Film-based motion picture digitizing system for super-high-definition images
Author(s): Kazunobu Kashiwabuchi; Isao Furukawa; Sadayasu Ono
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Paper Abstract

This paper describes the configuration of a super high definition (SHD) motion picture film digitizing system and performance evaluation results. A still/motion picture film digitizing system is developed using a CCD line image digitizer, which can capture images at a maximum resolution of 4096 X 4096 pixels, 12 bits/pixel. Motion picture sequences are obtained on a frame by frame basis from a 70 mm motion picture film with the aperture size of 57 X 57 mm. Several versions of SHD motion picture test sequences were so digitized and the frame to frame positioning error was within +/- 1 pixel/2048 pixels. An SHD image processing software environment was newly developed to provide all of the image processing functions needed in the digitizing system and a comfortable user interface. A color matching method, which is based on direct color measurement/approximation between the original image and the reproduced image, was proposed for the digitizing system. A color matching experiment was performed between a film projector and a CRT display. The improvement ratio of mean squared color distance was 1.30. Although the improvement ratio is relatively small, a noticeable improvement in color reproduction accuracy was observed.

Paper Details

Date Published: 5 May 1994
PDF: 12 pages
Proc. SPIE 2173, Image Acquisition and Scientific Imaging Systems, (5 May 1994); doi: 10.1117/12.175157
Show Author Affiliations
Kazunobu Kashiwabuchi, NTT Transmission Systems Labs. (Japan)
Isao Furukawa, NTT Transmission Systems Labs. (Japan)
Sadayasu Ono, NTT Transmission Systems Labs. (Japan)

Published in SPIE Proceedings Vol. 2173:
Image Acquisition and Scientific Imaging Systems
Helen C. Titus; Amir Waks, Editor(s)

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