Method for expansion of a digital image

Details Method for expansion of a digital image Method for expansion of a digital image

1983-12-30

1986-02-04

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358135, 358287, G06K 942

Patent

active

045690812

ABSTRACT:
A method for expanding a binary image includes the steps of: storing the image in bit sequence; inserting for each string of 5 bits along a first axis one or more expansion bits, to convert each said string of 5 bits to a string of 6 bits; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each 5 rows of bits along a second axis of the image to convert each 5 rows of bits to 6 rows of bits along the second axis of the image; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.

REFERENCES:
patent: 4139092 (1980-03-01), Stoffel
patent: 4394693 (1983-07-01), Shirley
patent: 4419697 (1983-12-01), Wada

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