System and method for grey value expansion of pixel data

Details System and method for grey value expansion of pixel data System and method for grey value expansion of pixel data

1994-11-17

2000-03-21

Kelley, Christopher S.

Coded data generation or conversion

Digital code to digital code converters

Byte length changed

G06K 900

Patent

active

060407913

ABSTRACT:
A grey image value expansion method or system enables a receiving system to convert image data having a lower bit resolution to the higher native bit resolution of the receiving system. The conversion or expansion produces a new pixel byte which is a compilation of the received pixel byte wherein the received pixel byte has been repeated at least two times in the compilation. More specifically, a pixel byte having a bit resolution equal to A is converted to a new pixel byte having a bit resolution equal to B wherein the new pixel byte is a compilation of the received pixel byte. The received pixel byte is a unit of the new pixel byte such that the received pixel byte is repeated N times in the compilation wherein N being an integer equal to or greater than two. The number of repeating received pixel byte can be varied so long as N times A is less than or equal to B.

REFERENCES:
patent: 4698688 (1987-10-01), Ochi et al.
patent: 4985701 (1991-01-01), Motoe et al.
patent: 5091660 (1992-02-01), Usami

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