Variable area film soundtrack renovation

Details Variable area film soundtrack renovation Variable area film soundtrack renovation

2006-10-24

2006-10-24

Fuller, Rodney (Department: 2851)

Optics: motion pictures

With sound accompaniment

Common picture and sound record carrier systems

C352S005000, C352S011000, C352S026000

Reexamination Certificate

active

07126663

ABSTRACT:
A method for reducing sound track sibilance distortion during playback of an analog optical sound track. The method comprises the steps of forming and storing an image of the analog optical sound track. Representing part of the stored image as a spatial image and applying an erosion filter to the spatial image. Converting the filtered spatial image to a signal representative of the sound track.

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Richter D. et al., “Restoration of Optical Variable Density Sound Tracks on Motion Picture Films by Digital Image Processing”, Optim. Proceedings of the International Conference on Optimization of Electrical and Electronic Equipments, XX, XX, vol. 3, May 11, 2000, pp. 793-798, XP008002764.
Search Report *.
Patrick Strule, “Digital Images Based Restoration of Optical Movie Soundtracks,” ETH, Zurich 1999, p. 7.
Patrick Strule, “Digital Images Based Restoration of Optical Movie Soundtracks,” ETH, Zurich 1999, pp. 55-56.

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