Patent ID: 6072464
Filing Date: 2000-06-06
Classification: G09G,H04N

Abstract:
A color reproduction method using a color reproduction apparatus which has a plurality of primary colors, converts color information values expressed by a first color space as predetermined colors to device values expressed by a second color space different from said first color space in order to determine formation amounts of respective primary colors for reproducing said color information values by colors by mixing the primary colors on a medium in which the colors are to be reproduced and outputs colors corresponding to said device values to reproduce said predetermined colors on said medium in which the colors are to be reproduced, the formation amounts of respective primary colors being amounts of color materials or light emission amounts which are expressed by the second color space, said method comprising: obtaining single color characteristic of each of said primary colors which expresses a relation between the formation amount of each primary color for color reproduction by mixing said plurality of the primary colors and the device value for determining said formation amount; obtaining color mixing characteristic which expresses a relation between a predetermined formation amount of each of said plurality of the primary colors and chromaticity of colors reproduced by formation of the colors depending on said each predetermined formation amount, according to said obtained single color characteristic, said color mixing characteristic being obtained separately from said single color characteristic; and converting the color information value of each arbitrary color of said first color space to said device value according to the obtained single color characteristic and color mixing characteristic.