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EP0149120A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

A method for expansion of a digital image

Assignee: International Business Machines Corp
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Filing: 1984-12-11
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Granted: —
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Expires: 2004-12-11
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Abstract

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 axls 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.

Inventors

  • 👤 Frederick Cole Mintzer
  • 👤 Karen Louise Anderson
  • 👤 Joan La Verne Mitchell

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 16:09
CPC Classifications
G; G06; G06T; G06T3/00; G06T3/40; G06T3/4023

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 133 words
A method for enlarging a binary image comprising the steps of: storing said image in bit sequence; inserting for each string of n bits along a first axis one or more expansion bits, to convert each said string of n bits to a string of m bits, where m is greater than n; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each i rows of bits along a second axis of the image to convert said i rows of bits to j rows of bits along . the second axis of the image, where j is greater than i; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.
Claim 2
Independent Claim 133 words
A method for enlarging a binary image comprising the steps of: storing said image in bit sequence; inserting for each string of n bits along a first axis one or more expansion bits, to convert each said string of n bits to a string of m bits, where m is greater than n; assigning a value to each expansion bit generated by the above step; inserting one or more rows of expansion bits for each i rows of bits along a second axis of the image to convert said i rows of bits to j rows of bits along . the second axis of the image, where j is greater than i; assigning a value to each expansion bit generated by the above steps; storing the enlarged image generated by the above steps.
Claim 3
Dependent Claim 43 words
A method according to claim 1 wherein said step of inserting for each string of n bits comprises inserting 1 bit for each said string of 5 bits to expand said image along a first axis by a ratio of 6 to 5.
Claim 4
Dependent Claim 40 words
A method according to claim 1 wherein said step of inserting for each i rows bits comprises inserting 1 row for each said 5 rows to expand said image along a second axis by a ratio of 6 to 5.
Claim 5
Dependent Claim 27 words
A method according to claim 1 wherein said step of storing said enlarged image comprises overwriting said image to perform an in situ expansion of said image.
Claim 6
Dependent Claim 37 words
A method according to claim 1 wherein said step of storing said enlarged image comprises assigning said enlarged image to an area of storage separate from an area of storage in which said image was originally stored.

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