Color-image processing apparatus and color-image processing meth

Details Color-image processing apparatus and color-image processing meth Color-image processing apparatus and color-image processing meth

1997-04-21

1999-07-20

Mancuso, Joseph

Image analysis

Color image processing

358523, G06K 900

Patent

active

059265590

ABSTRACT:
A select-signal generator generates a select signal according to a magnitude comparison between the low-order bit data R.sub.l, G.sub.l, and B.sub.l of input R, G, and B color signals. A table memory generates three addresses with the use of the high-order bit data R.sub.u, G.sub.u, and B.sub.u according to the select signal and outputs lattice point data C11, C12, and C13 corresponding to the three addresses. Another table memory outputs one lattice data C2 for a lattice point which is offset from lattice points in the above-described table memory by addressing with the use of the high-order bit data. Then, an interpolation circuit executes interpolation according to the data C11, C12, C13, and C2 at four lattice points which form a triangular pyramid as a minimum interpolation space.

REFERENCES:
patent: 5594558 (1997-01-01), Usami et al.
patent: 5768410 (1998-06-01), Ohta et al.

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