Image data scaling system

Details Image data scaling system Image data scaling system

1990-05-11

1991-09-03

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

358425, 358426, 358428, 358431, 358451, G06K 900

Patent

active

050461176

ABSTRACT:
An image-data scaling system in which a digital image data is subjected to a desired scale with respect to a main scanning direction to obtain a reduced or enlarged image data. The original image data is sequentially distributed to be sequentially stored into a plurality of memory means in synchronism with a data clock for the original image data. Image data stored in the plurality of memory means are parallelly read out on the basis of a read clock synchronized with the data clock and according to a desired scaling factor. The image data parallelly read out are partially or wholly extracted, or one or a plurality of interpolation image data are inserted between any selected adjacent image data, to thereby obtain an image data having the desired scaling factor.

REFERENCES:
patent: 4792856 (1988-12-01), Shiratsuchi
patent: 4879666 (1989-11-01), Kembo
patent: 4885786 (1989-12-01), Anderson et al.
patent: 4891702 (1990-01-01), Nakayama et al.

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