Spatial correction device for an image analyzer

Details Spatial correction device for an image analyzer Spatial correction device for an image analyzer

1982-09-13

1985-11-12

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 514

Patent

active

045531641

ABSTRACT:
A spatial correction device for an image analyzer having an image restitution support medium and a device for scanning the support medium. A memory is provided for storing, for each of the MN rectangles resulting from dividing the image restitution support medium of the analyzer into a grid of M groups of L lines each and N columns, a predetermined correction signal. Also included is a sequencer for ensuring that the correction signals are properly applied as well as an interpolation device for calculating the intermediate values of the correction signals corresponding to each of the L lines of a given rectangle. This interpolation device also avoids the derivative ruptures of the correction signals during their transition between adjacent rectangles which are situated in the same column.

REFERENCES:
patent: 3902011 (1975-08-01), Pieters
patent: 4309723 (1982-01-01), Ryan
patent: 4437110 (1984-03-01), Hunaut

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