Image data processing system for image input device

Details Image data processing system for image input device Image data processing system for image input device

1988-03-11

1989-03-28

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358280, 358284, G06K 940

Patent

active

048171816

ABSTRACT:
An image data processing system for use with an image input device of a facsimile apparatus, digital copier, computer or the like. By using the fact that both MTF compensation processing said scanning line density conversion processing are represented by a sum of products of peripheral pixels and coefficients, i.e., linear product of peripheral pixels, the system adequately selects values of the coefficients to simultaneously effect MTF compensation processing and scanning line density conversion processing by way of the same architecture.

REFERENCES:
patent: 4517607 (1985-05-01), Ohkouchi et al.
patent: 4553173 (1985-11-01), Kawamura
patent: 4554593 (1985-11-01), Fox et al.
patent: 4589034 (1986-05-01), Yokomizo
patent: 4593297 (1986-06-01), Suzuki et al.
patent: 4748677 (1988-05-01), Yokomizo

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