Television – Special applications – Film – disc or card scanning
Patent
1997-04-14
2000-03-07
Le, Vu
Television
Special applications
Film, disc or card scanning
348188, 348189, H04N 336, H04N 1700
Patent
active
06034721&
ABSTRACT:
An analysis method for cinematographic film uses a film scanner for converting the images of the film into video images, the film scanner having a calibration mode providing a standardized video reproduction of films and a manual mode allowing the operator to adjust the film scanner for improving the visual quality of the video images it produces. The method comprises the steps of: a) filming a reference surface under desired lighting conditions to produce a film portion; b) using the film scanner in calibration mode to convert the film portion into video images; c) measuring the mean luminance and chrominance values of a portion of the reference surface in the video images produced in the calibration mode; d) using the film scanner in the manual mode to convert the film portion into video images with desired luminance and chrominance adjustments; e) measuring the mean luminance and chrominance values of a portion of the reference surface in the video images produced in the manual mode; and f) providing information on the mean values obtained in the manual mode relative to the mean values obtained in the calibration mode.
REFERENCES:
patent: 4575124 (1986-03-01), Morrison
patent: 4991007 (1991-02-01), Corley
patent: 5428387 (1995-06-01), Galt et al.
patent: 5917987 (1999-06-01), Neyman
Kennel, G., SMPTE Journal, Digital Film Scanning and Recording: The Technology and Practice, vol. 103, No. 3, pp. 174-181, Mar. 1, 1994.
French Search Report for FR 9604888, dated Dec. 20, 1996.
Beauviala Jean-Pierre
Bellet Alain
Mangeat Frederic
Aaton
Ingersoll PC Buchanan
Le Vu
Plevy Arthur L.
Wong Allen
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