发明名称 |
Color conversion apparatus for altering color values within selected regions of a reproduced picture. |
摘要 |
<p>A color conversion apparatus is described whereby color within at least one specific region of a color picture (101) can be converted to a different color in a reproduced picture, while enabling gradations of color and lightness within that region to be left substantially unchanged. The conversion is based upon setting of pre-calculated output values in a table memory within a color conversion section (109), by an initialization operation, and conversion can be a change in one color attribute or in a combination of attributes of respective color values within the selected region. The table memory subsequently responds to successive input color values (104) supplied thereto by producing color-converted output values which can be supplied for example to a color printer apparatus, with resultant degrees of color change being determined in accordance with degrees of closeness of one attribute or a combination of attributes of each input color value to the corresponding attribute or combination of attributes of a predetermined color value. <IMAGE></p> |
申请公布号 |
EP0481525(A2) |
申请公布日期 |
1992.04.22 |
申请号 |
EP19910117930 |
申请日期 |
1991.10.21 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
KANAMORI, KATSUHIRO;FUMOTO, TERUO;KOTERA, HIROAKI |
分类号 |
G03G15/01;G03F3/00;H04N1/46;H04N1/60;H04N1/62 |
主分类号 |
G03G15/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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