JP2000050090A5 - - Google Patents
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- JP2000050090A5 JP2000050090A5 JP1998211515A JP21151598A JP2000050090A5 JP 2000050090 A5 JP2000050090 A5 JP 2000050090A5 JP 1998211515 A JP1998211515 A JP 1998211515A JP 21151598 A JP21151598 A JP 21151598A JP 2000050090 A5 JP2000050090 A5 JP 2000050090A5
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前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定し、
該決定した非線型モデル式によって測色値を推定する、
ステップを有したことを特徴とするカラーパッチに関する測色値の推定方法。A colorimetric value for other sample values in the printing device from a conversion relationship between a sample value that is a color space value depending on the printing device and a colorimetric value of a color patch printed by the printing device based on the sample value Is a method of estimating
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
According to the color difference between the obtained colorimetric value and the predetermined colorimetric value, the nonlinear model equation is determined by adjusting the coefficient of the nonlinear model equation so that the color difference is smaller than the predetermined value. ,
A colorimetric value is estimated by the determined nonlinear model formula;
A method for estimating a colorimetric value relating to a color patch characterized by comprising a step.
前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
測色値を入力とし前記非線型モデル式に入力する前記色空間の値を出力とする色修正式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定し、
所定の測色値を前記色修正式に入力し、該入力によって得られる前記色空間の値を前記非線型モデル式に入力して測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記色修正式の係数を調整して当該色修正式を決定する
ステップを有したことを特徴とするデバイス・プロファイルの作成方法。A method for creating a device profile of a printing apparatus from a conversion relationship between a sample value that is a color space value depending on the printing apparatus and a colorimetric value of a color patch printed by the printing apparatus based on the sample value Because
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Prepare a color correction formula that takes the colorimetric value as an input and outputs the value of the color space that is input to the nonlinear model formula,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
According to the color difference between the obtained colorimetric value and the predetermined colorimetric value, the nonlinear model equation is determined by adjusting the coefficient of the nonlinear model equation so that the color difference is smaller than the predetermined value. ,
A predetermined colorimetric value is input to the color correction equation, and the color space value obtained by the input is input to the nonlinear model equation to obtain a colorimetric value,
In accordance with the color difference between the obtained colorimetric value and the predetermined colorimetric value, adjusting the coefficient of the color correction equation so as to make the color difference smaller than the predetermined value, and determining the color correction equation A method of creating a device profile characterized by having
前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定し、
該決定した非線型モデル式によって測色値を推定する、
処理を実行することを特徴とする画像処理装置。A colorimetric value for other sample values in the printing device from a conversion relationship between a sample value that is a color space value depending on the printing device and a colorimetric value of a color patch printed by the printing device based on the sample value An image processing apparatus for estimating
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
According to the color difference between the obtained colorimetric value and the predetermined colorimetric value, the nonlinear model equation is determined by adjusting the coefficient of the nonlinear model equation so that the color difference is smaller than the predetermined value. ,
A colorimetric value is estimated by the determined nonlinear model formula;
An image processing apparatus that executes processing.
前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
測色値を入力とし前記非線型モデル式に入力する前記色空間の値を出力とする色修正式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定し、
所定の測色値を前記色修正式に入力し、該入力によって得られる前記色空間の値を前記非線型モデル式に入力して測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記色修正式の係数を調整して当該色修正式を決定する
処理を実行することを特徴とする画像処理装置。An image for creating a device profile of the printing apparatus from a conversion relationship between a sample value that is a color space value depending on the printing apparatus and a colorimetric value of a color patch printed by the printing apparatus based on the sample value A processing device comprising:
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Prepare a color correction formula that takes the colorimetric value as an input and outputs the value of the color space that is input to the nonlinear model formula,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
According to the color difference between the obtained colorimetric value and the predetermined colorimetric value, the nonlinear model equation is determined by adjusting the coefficient of the nonlinear model equation so that the color difference is smaller than the predetermined value. ,
A predetermined colorimetric value is input to the color correction equation, and the color space value obtained by the input is input to the nonlinear model equation to obtain a colorimetric value,
In accordance with the color difference between the obtained colorimetric value and the predetermined colorimetric value, the coefficient of the color correction equation is adjusted so that the color difference is smaller than the predetermined value, and the color correction equation is determined. An image processing apparatus that executes the image processing apparatus.
該プログラムは、
前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定する
ステップを有したことを特徴とする記憶媒体。A colorimetric value for other sample values in the printing device from a conversion relationship between a sample value that is a color space value depending on the printing device and a colorimetric value of a color patch printed by the printing device based on the sample value A storage medium storing a processing program for estimating
The program
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
In accordance with the color difference between the obtained colorimetric value and the predetermined colorimetric value, the coefficient of the nonlinear model equation is adjusted so that the color difference is smaller than the predetermined value, and the nonlinear model equation is determined. A storage medium comprising steps.
該プログラムは、
前記色空間の値を入力とし該値に対応した測色値を出力とするプリント装置の入出力特性を表わす非線型モデル式を用意し、
測色値を入力とし前記非線型モデル式に入力する前記色空間の値を出力とする色修正式を用意し、
サンプル値と、該サンプル値に基づくカラーパッチの測色値との前記変換関係を求め、
該変換関係から、測色値に対するサンプル値の逆変換関係を求め、
所定の測色値に対し該逆変換関係から定まるサンプル値を前記非線型モデル式の入力とすることにより、当該出力として測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記非線型モデル式の係数を調整して当該非線型モデル式を決定し、
所定の測色値を前記修正式に入力し、該入力によって得られる前記色空間の値を前記非線型モデル式に入力して測色値を求め、
該求められた測色値と前記所定の測色値との色差に応じて、該色差が所定値より小となるよう前記色修正式の係数を調整して当該色修正式を決定する
ステップを有したことを特徴とする記憶媒体。Processing for creating a device profile of a printing apparatus from a conversion relationship between a sample value that is a color space value depending on the printing apparatus and a colorimetric value of a color patch printed by the printing apparatus based on the sample value A storage medium readable by an information processing device,
The program
A non-linear model formula representing the input / output characteristics of a printing apparatus that takes the value of the color space as an input and outputs a colorimetric value corresponding to the value is prepared,
Prepare a color correction formula that takes the colorimetric value as an input and outputs the value of the color space that is input to the nonlinear model formula,
Obtaining the conversion relationship between the sample value and the colorimetric value of the color patch based on the sample value;
From the conversion relationship, the inverse conversion relationship of the sample value with respect to the colorimetric value is obtained,
By obtaining a sample value determined from the inverse transformation relationship with respect to a predetermined colorimetric value as an input of the nonlinear model formula, a colorimetric value is obtained as the output,
According to the color difference between the obtained colorimetric value and the predetermined colorimetric value, the nonlinear model equation is determined by adjusting the coefficient of the nonlinear model equation so that the color difference is smaller than the predetermined value. ,
A predetermined colorimetric value is input to the correction equation, and the color space value obtained by the input is input to the nonlinear model equation to obtain a colorimetric value.
In accordance with the color difference between the obtained colorimetric value and the predetermined colorimetric value, adjusting the coefficient of the color correction equation so as to make the color difference smaller than the predetermined value, and determining the color correction equation A storage medium characterized by having.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21151598A JP4077938B2 (en) | 1998-07-27 | 1998-07-27 | Colorimetric value estimation method for color patch, device profile creation method using the method, and image processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21151598A JP4077938B2 (en) | 1998-07-27 | 1998-07-27 | Colorimetric value estimation method for color patch, device profile creation method using the method, and image processing apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000050090A JP2000050090A (en) | 2000-02-18 |
| JP2000050090A5 true JP2000050090A5 (en) | 2007-11-08 |
| JP4077938B2 JP4077938B2 (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21151598A Expired - Fee Related JP4077938B2 (en) | 1998-07-27 | 1998-07-27 | Colorimetric value estimation method for color patch, device profile creation method using the method, and image processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4077938B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3796422B2 (en) | 2001-09-14 | 2006-07-12 | キヤノン株式会社 | Conversion data adjustment method, apparatus and program |
| JP3890211B2 (en) | 2001-09-14 | 2007-03-07 | キヤノン株式会社 | Image processing method, image processing apparatus, program, and storage medium |
| JP4189169B2 (en) | 2002-05-15 | 2008-12-03 | 富士フイルム株式会社 | Color conversion definition correcting device and color conversion definition correcting program |
| JP4428998B2 (en) | 2003-12-10 | 2010-03-10 | キヤノン株式会社 | Image processing apparatus and method |
| JP2006094040A (en) | 2004-09-22 | 2006-04-06 | Dainippon Screen Mfg Co Ltd | Profile generating device, program, and profile generating method |
| JP4595734B2 (en) * | 2005-08-03 | 2010-12-08 | セイコーエプソン株式会社 | Profile creation method, profile creation device, profile creation program, print control method, print control device, and print control program |
| JP4715642B2 (en) * | 2006-06-06 | 2011-07-06 | 富士ゼロックス株式会社 | Color conversion apparatus, method and program |
| CN112862906B (en) * | 2021-01-15 | 2023-07-21 | 深圳市中钞科信金融科技有限公司 | Color space conversion method based on neural network |
-
1998
- 1998-07-27 JP JP21151598A patent/JP4077938B2/en not_active Expired - Fee Related
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