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Method and computer program product for predicting spectral characteristics of ink applied to a base material

專利號(hào)
US11659131B2
公開日期
2023-05-23
申請(qǐng)人
SCREEN HOLDINGS CO., LTD.(JP Kyoto)
發(fā)明人
Kenichi Yokouchi
IPC分類
H04N1/60; H04N1/54
技術(shù)領(lǐng)域
gradation,spectral,prediction,value,color,relational,values,equation,target,obtained
地域: Kyoto

摘要

First relational equations which represent characteristics of respective sample colors are obtained, and for the respective sample colors, prediction values of spectral characteristics of characteristics-acquired gradation values for a prediction target color are obtained using the first relational equations. Difference values between the prediction values and actual measurement values are obtained, and a sample color for which a minimum difference value is obtained is selected as a reference color. A second relational equation that represents characteristics of the reference color is obtained, and a prediction value of spectral characteristics of a prediction target gradation value for the prediction target color is obtained using the second relational equation.

說(shuō)明書

? ( j ) - Vp ? ( 1 ) ? ( j ) } 2 ( 5 )

Likewise, a square error E(i) between prediction values obtained for an i-th sample color Ci and the actual measurement values for the prediction target color obtained by the following Equation (6). However, a weighting coefficient may be added for each wavelength.

E ? ( i ) = j = 1 36 { Vr ? ( j ) - Vp ? ( i ) ? ( j ) } 2 (

權(quán)利要求

1
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