Method for the automatic correction of errors in image registrat

Details Method for the automatic correction of errors in image registrat Method for the automatic correction of errors in image registrat

1988-10-31

1990-02-20

Ng, Jin F.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358222, H04N 5253

Patent

active

049031317

ABSTRACT:
A method is described for the determination and automatic correction of horizontal and vertical errors in image steadiness for continuous raster scanning of film, using an image memory. By means of the vertical image steadiness error signals the beginning of scanning of the first line of a new film frame and the start of writing of video signals for the first line of this film frame are determined. Output of the video signals for at least one stored image is synchronous with the studio timing signals so that it can be read out using standard studio horizontal image steadiness and vertical timing signals. By means of the horizontal error signals the start of the scanning of a new line is displaced for a stored image in relation to the start of the reading of a new line.

REFERENCES:
patent: 4104680 (1978-08-01), Holland
patent: 4151560 (1979-04-01), Zinchuk
patent: 4476493 (1984-10-01), Poetsch et al.
patent: 4513324 (1985-04-01), Poetsch et al.
patent: 4630120 (1986-12-01), Childs
patent: 4717958 (1988-01-01), Gal et al.
patent: 4814885 (1989-03-01), Beard
Image Unsteadiness in 16 mm Film for TV-by Wood et al., vol. 80, Oct. 1971-Journal of the SMPTE.
Challenges to the Concept of Cancellation-Zavada-pp. 1173-1183-Dec. 1981-SMPTE Journal.
New Investigations on Picture Steadiness of Motion Pictures in Projection-Karl-Otto Frielinghaus-1/1968-SMPTE Journal-vol. 77.

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