04712140 is referenced by 32 patents and cites 5 patents.

A binary image is reduced in size by a method including the steps of: storing the image in bit sequence; dividing the image into transposable blocks; transposing by look up table, for each block having any nonzero data, each group of 6 bits along a first axis to a group of 5 bits; transposing by look up table, for each block having any nonzero data, each group of 6 bits along a second axis to a group of 5 bits; storing said transposed blocks.

Title
Image reduction method
Application Number
567310
Publication Number
4712140
Application Date
March 17, 1986
Publication Date
December 8, 1987
Inventor
Karen L Anderson
Peekskill
NY, US
Frederick C Mintzer
Shrub Oak
NY, US
Agent
Thomas P Dowd
Assignee
International Business Machines Corporation
NY, US
IPC
H04N 7/18
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