Method and apparatus for smoothed scaling of facsimile images

Details Method and apparatus for smoothed scaling of facsimile images Method and apparatus for smoothed scaling of facsimile images

1993-03-17

1995-02-28

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 54, 395128, G06K 942, G06K 940

Patent

active

053944852

ABSTRACT:
Facsimile image-scaling and -smoothing method and apparatus are described. They scale a received facsimile image along a given axis to increase the printed image resolution therealong, while smoothing the scaled image to reduce visually objectionable ticks. They do so by analyzing received image data with respect to adjacent received lines having disparate pixel counts and by filling in pixels therebetween in accordance with predefined fill rules that are designed also to smooth the output image to be printed. Various predefined rules are applied to produce intermediate results some or all of which are comprehended by the scaling/smoothing algorithm to produce the final smoothed, scaled output pixel image. Preferably such analyzing and filling in accordance with such rules are performed by a hybrid hardware and firmware subsystem within a receiving facsimile machine or facsimile-receiving printer.

REFERENCES:
patent: 3921164 (1975-11-01), Anderson
patent: 4569081 (1986-02-01), Mintzer et al.
patent: 4979229 (1990-12-01), Moolenaar
patent: 5029108 (1991-07-01), Lung
patent: 5134495 (1992-07-01), Frazier et al.
patent: 5140648 (1992-08-01), Hackett et al.
patent: 5149212 (1992-09-01), Murakami
patent: 5155503 (1992-10-01), Tasaki et al.
patent: 5282057 (1994-01-01), Maillax et al.

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