METHOD AND DEVICE FOR GENERATING MULTI-LEVEL VOID DATA

Japanese Patent JP2943591

B2

PURPOSE: To output beautiful multi-level void data to an output device capable of gradation expression by providing a multi-level data holding means, a multi- level thickened data generating means, a multi-level data inverting means, and an inverted data overwrite means.
CONSTITUTION: Multi-level data as the object of void processing is held in a multi-level data holding means 1, and a multi-level thickened data generating means 3 generates multi-level thickened data, whose outline part corresponds to the gradation value, from multi-level data held in the means 1. The multi- level data inverting means 2 inverts the gradation value of each picture element of multi-level data held in the means 1 to generate the void part whose outline part corresponds to the gradation value. An inverted data overwrite means 4 writes only values of picture elements, which are effective and are other than those in the original background part, out of picture elements inverted by the means 2 over the picture elements of multi-level thick data generated by the means 3. Thus, multi-level void data where outline parts of the inside and the outside are multi-level is generated from multi-level data.

NAKAI MASARU
YOSHII TAKETO
MORITA KATSUYUKI
MYABE YOSHUKI
MATSUI MYOSHI

JP33636893A

August 30, 1999

December 28, 1993

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MATSUSHITA DENKI SANGYO KK

G06T3/00; G06T5/00; G09G5/02; G09G5/10; G09G5/24; H04N1/387; G09G5/28; G09G5/36; (IPC1-7): G09G5/36; G06T5/00; G09G5/02; G09G5/10; H04N1/387

Fumio Iwahashi (2 others)

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