Method of aligning objects by detecting a reference picture line

Details Method of aligning objects by detecting a reference picture line Method of aligning objects by detecting a reference picture line

1987-06-23

1989-09-19

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358101, 358107, G11B 700, H04N 500

Patent

active

048686832

ABSTRACT:
In a method of aligning objects and in particular, of aligning optically readable disc-shaped information carrier. The objects are preferably optically scanned line-by-line in a direction transverse to their direction of movement. A reference picture line with an optically characteristic picture content is detected to allow alignment relative to known positions. To detect the reference picture line, the picture contents of all the picture lines are compared with each other and the corresponding correlation coefficients are determined. The reference picture line is that picture line whose picture content correlates least with the picture content of any other picture line.

REFERENCES:
patent: 3903363 (1975-09-01), Montone et al.
patent: 4282553 (1981-08-01), Wentzel et al.

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