High speed system for image scaling

Details High speed system for image scaling High speed system for image scaling

1996-03-04

1998-07-07

Evans, Arthur G.

Pulse or digital communications

Repeaters

Testing

375101, G06K 1500

Patent

active

057781583

ABSTRACT:
A system converts a source image, which may include plural grey level source pixels at a first resolution level, to a destination image at a second resolution level. The system employs a scaling subsystem including a memory which stores at least a portion of a row of source pixels, a scale factor and a relative input index array (RIIA) comprising a single index bit for each column of the destination image. Each index bit enables a grey level source pixel to be identified to be used in scaling of the source image to the second resolution. A scale logic circuit is responsive to each index bit and the source pixels, to associate at least one source pixel with each column of the destination image. The scaling subsystem further includes a control processor which calculates the RIIA based upon the scale factor stored in the memory.

REFERENCES:
patent: 5297289 (1994-03-01), Mintzer

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