Correction of film instability based on movement of the video im

Details Correction of film instability based on movement of the video im Correction of film instability based on movement of the video im

1993-11-08

1997-07-22

Au, Amelia

Television

Special applications

Film, disc or card scanning

348103, H04N 718

Patent

active

056508166

ABSTRACT:
Film unsteadiness in a flying spot film scanner (10) is measured by reference to film image movement based on a measure of the direction of movement acquired by examination by a movement compensator 30 of spatial and temporal differences around a given pixel. A correction signal is generated and applied as a feedback signal to the X and Y circuits of the scan generator (20).

REFERENCES:
patent: 3780222 (1973-12-01), Pickstock et al.
patent: 4897729 (1990-01-01), Mumford et al.
patent: 5179314 (1993-01-01), Walker et al.
patent: 5475423 (1995-12-01), Eiberger

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