公开(公告)号：US07986438B2

公开(公告)日：2011-07-26

申请号：US12327694

申请日：2008-12-03

申请人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

发明人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

IPC分类号： H04N1/60

CPC分类号： H04N1/6033 ,  H04N1/6027 ,  H04N1/6058

摘要： In a system for converting an input image signal input from an image input device into an output image signal to be output by an image output device, an image compression unit converts a spectral image input via an image input unit into R, G, and B data, obtains principal component data by making principal component analysis of the spectral image, and stores these data in an input image storage unit. When the principal component data and R, G, and B data are loaded and stored in an output image storage unit, a spectral reflectance reconstruction unit reconstructs the spectral reflectance of each pixel using these data. A printer model determines the dot quantities of inks used to record each pixel in an image output device on the basis of the calculated spectral reflectance, and generates an output image signal for the image output device. In this way, image data which allows to estimate the spectral reflectance characteristics of an input image is provided, and faithful color reproduction can be realized.

摘要翻译： 在用于将从图像输入装置输入的输入图像信号转换成由图像输出装置输出的输出图像信号的系统中，图像压缩单元将经由图像输入单元输入的分光图像转换为R，G和B 数据，通过对光谱图像进行主成分分析来获得主成分数据，并将这些数据存储在输入图像存储单元中。 当主成分数据和R，G和B数据被加载并存储在输出图像存储单元中时，光谱反射率重建单元使用这些数据重建每个像素的光谱反射率。 打印机型号基于所计算的光谱反射率确定用于记录图像输出装置中的每个像素的墨水的点数，并且生成用于图像输出装置的输出图像信号。 以这种方式，提供允许估计输入图像的光谱反射特性的图像数据，并且可以实现忠实的色彩再现。

公开(公告)号：US20090080009A1

公开(公告)日：2009-03-26

申请号：US12327694

申请日：2008-12-03

申请人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

发明人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

IPC分类号： H04N1/60

CPC分类号： H04N1/6033 ,  H04N1/6027 ,  H04N1/6058

摘要： In a system for converting an input image signal input from an image input device into an output image signal to be output by an image output device, an image compression unit converts a spectral image input via an image input unit into R, G, and B data, obtains principal component data by making principal component analysis of the spectral image, and stores these data in an input image storage unit. When the principal component data and R, G, and B data are loaded and stored in an output image storage unit, a spectral reflectance reconstruction unit reconstructs the spectral reflectance of each pixel using these data. A printer model determines the dot quantities of inks used to record each pixel in an image output device on the basis of the calculated spectral reflectance, and generates an output image signal for the image output device. In this way, image data which allows to estimate the spectral reflectance characteristics of an input image is provided, and faithful color reproduction can be realized.

摘要翻译： 在用于将从图像输入装置输入的输入图像信号转换成由图像输出装置输出的输出图像信号的系统中，图像压缩单元将经由图像输入单元输入的分光图像转换为R，G和B 数据，通过对光谱图像进行主成分分析来获得主成分数据，并将这些数据存储在输入图像存储单元中。 当主成分数据和R，G和B数据被加载并存储在输出图像存储单元中时，光谱反射率重建单元使用这些数据重建每个像素的光谱反射率。 打印机型号基于所计算的光谱反射率确定用于记录图像输出装置中的每个像素的墨水的点数，并且生成用于图像输出装置的输出图像信号。 以这种方式，提供允许估计输入图像的光谱反射特性的图像数据，并且可以实现忠实的色彩再现。

公开(公告)号：US07480083B2

公开(公告)日：2009-01-20

申请号：US10927234

申请日：2004-08-27

申请人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

发明人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

IPC分类号： H04N1/04

CPC分类号： H04N1/6033 ,  H04N1/6027 ,  H04N1/6058

摘要： In a system for converting an input image signal input from an image input device into an output image signal to be output by an image output device, an image compression unit converts a spectral image input via an image input unit into R, G, and B data, obtains principal component data by making principal component analysis of the spectral image, and stores these data in an input image storage unit. When the principal component data and R, G, and B data are loaded and stored in an output image storage unit, a spectral reflectance reconstruction unit reconstructs the spectral reflectance of each pixel using these data. A printer model determines the dot quantities of inks used to record each pixel in an image output device on the basis of the calculated spectral reflectance, and generates an output image signal for the image output device. In this way, image data which allows to estimate the spectral reflectance characteristics of an input image is provided, and faithful color reproduction can be realized.

摘要翻译： 在用于将从图像输入装置输入的输入图像信号转换成由图像输出装置输出的输出图像信号的系统中，图像压缩单元将经由图像输入单元输入的分光图像转换为R，G和B 数据，通过对光谱图像进行主成分分析来获得主成分数据，并将这些数据存储在输入图像存储单元中。 当主成分数据和R，G和B数据被加载并存储在输出图像存储单元中时，光谱反射率重建单元使用这些数据重建每个像素的光谱反射率。 打印机型号基于所计算的光谱反射率确定用于记录图像输出装置中的每个像素的墨水的点数，并且生成用于图像输出装置的输出图像信号。 以这种方式，提供允许估计输入图像的光谱反射特性的图像数据，并且可以实现忠实的色彩再现。

公开(公告)号：US20050111017A1

公开(公告)日：2005-05-26

申请号：US10927234

申请日：2004-08-27

申请人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

发明人： Kosei Takahashi ,  Takeshi Makita ,  Osamu Yamada

IPC分类号： B41B1/00 ,  H04N1/60

CPC分类号： H04N1/6033 ,  H04N1/6027 ,  H04N1/6058

摘要： In a system for converting an input image signal input from an image input device into an output image signal to be output by an image output device, an image compression unit converts a spectral image input via an image input unit into R, G, and B data, obtains principal component data by making principal component analysis of the spectral image, and stores these data in an input image storage unit. When the principal component data and R, G, and B data are loaded and stored in an output image storage unit, a spectral reflectance reconstruction unit reconstructs the spectral reflectance of each pixel using these data. A printer model determines the dot quantities of inks used to record each pixel in an image output device on the basis of the calculated spectral reflectance, and generates an output image signal for the image output device. In this way, image data which allows to estimate the spectral reflectance characteristics of an input image is provided, and faithful color reproduction can be realized.

摘要翻译： 在用于将从图像输入装置输入的输入图像信号转换成由图像输出装置输出的输出图像信号的系统中，图像压缩单元将经由图像输入单元输入的分光图像转换为R，G和B 数据，通过对光谱图像进行主成分分析来获得主成分数据，并将这些数据存储在输入图像存储单元中。 当主成分数据和R，G和B数据被加载并存储在输出图像存储单元中时，光谱反射率重建单元使用这些数据重建每个像素的光谱反射率。 打印机型号基于所计算的光谱反射率确定用于记录图像输出装置中的每个像素的墨水的点数，并且生成用于图像输出装置的输出图像信号。 以这种方式，提供允许估计输入图像的光谱反射特性的图像数据，并且可以实现忠实的色彩再现。

公开(公告)号：US07433102B2

公开(公告)日：2008-10-07

申请号：US10974888

申请日：2004-10-28

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： G03F3/08 ,  H04N1/46 ,  H04N1/60 ,  G09G5/02 ,  G06K9/00

CPC分类号： H04N1/6033

摘要： A primary color dot gain correction unit corrects the spectral reflectance of each of a plurality of color agents on the basis of the dot quantity set for each color agent. An initial estimated value calculator estimates a mixed color by the KM theory using spectral reflectance data corrected by the primary color dot gain correction unit. An ink overlap correction coefficient storage unit stores correction coefficients, which are determined on the basis of errors between the actually measured values of spectral reflectance data of color patches obtained using the plurality of color agents, and estimated values estimated by the initial estimated value calculator based on the dot quantities of the respective color agents on the color patches. An ink overlap correction unit obtains the prediction result of a reproduction color by correcting the spectral reflectance data of the mixed color calculated by the initial estimated value calculator on the basis of the correction coefficients stored in the ink overlap correction coefficient storage unit.

摘要翻译： 原色点增益校正单元基于为每个着色剂设定的点数来校正多个着色剂中的每一个的光谱反射率。 初始估计值计算器通过KM理论使用由原色网点增益校正单元校正的光谱反射率数据来估计混合色。 墨水重叠校正系数存储单元存储基于使用多个颜色剂获得的色标的光谱反射率数据的实际测量值与由初始估计值计算器估计的估计值之间的误差确定的校正系数 关于色块上各个着色剂的点数。 墨水重叠校正单元通过基于存储在墨水重叠校正系数存储单元中的校正系数校正由初始估计值计算器计算的混合颜色的光谱反射率数据来获得再现颜色的预测结果。

公开(公告)号：US20050083346A1

公开(公告)日：2005-04-21

申请号：US10974888

申请日：2004-10-28

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： G06K9/00 ,  G09G5/02 ,  H04N1/60

CPC分类号： H04N1/6033

摘要： A primary color dot gain correction unit corrects the spectral reflectance of each of a plurality of color agents on the basis of the dot quantity set for each color agent. An initial estimated value calculator estimates a mixed color by the KM theory using spectral reflectance data corrected by the primary color dot gain correction unit. An ink overlap correction coefficient storage unit stores correction coefficients, which are determined on the basis of errors between the actually measured values of spectral reflectance data of color patches obtained using the plurality of color agents, and estimated values estimated by the initial estimated value calculator based on the dot quantities of the respective color agents on the color patches. An ink overlap correction unit obtains the prediction result of a reproduction color by correcting the spectral reflectance data of the mixed color calculated by the initial estimated value calculator on the basis of the correction coefficients stored in the ink overlap correction coefficient storage unit.

摘要翻译： 原色点增益校正单元基于为每个着色剂设定的点数来校正多个着色剂中的每一个的光谱反射率。 初始估计值计算器通过KM理论使用由原色网点增益校正单元校正的光谱反射率数据来估计混合色。 墨水重叠校正系数存储单元存储基于使用多个颜色剂获得的色标的光谱反射率数据的实际测量值与由初始估计值计算器估计的估计值之间的误差确定的校正系数 关于色块上各个着色剂的点数。 墨水重叠校正单元通过基于存储在墨水重叠校正系数存储单元中的校正系数校正由初始估计值计算器计算的混合颜色的光谱反射率数据来获得再现颜色的预测结果。

公开(公告)号：US20050024656A1

公开(公告)日：2005-02-03

申请号：US10897547

申请日：2004-07-22

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： B41J2/525 ,  B41J2/52 ,  H04N1/23 ,  H04N1/50 ,  H04N1/54 ,  H04N1/60

CPC分类号： H04N1/54 ,  H04N1/603

摘要： An image processing method creates a lookup table having a plurality of grids. The image processing method includes the steps of selecting a grid having a small difference from a target grid from among grids whose output values are calculated; setting an output value of the selected grid as an initial value; optimizing an output value of the target grid by using the set initial value; and storing the optimized output value as an output value of the target grid.

摘要翻译： 图像处理方法创建具有多个网格的查找表。 图像处理方法包括以下步骤：从计算输出值的网格中选择与目标网格具有小差异的网格; 将所选网格的输出值设置为初始值; 通过使用设定的初始值来优化目标网格的输出值; 并将优化的输出值存储为目标网格的输出值。

公开(公告)号：US07667845B2

公开(公告)日：2010-02-23

申请号：US11167228

申请日：2005-06-28

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： G01N21/25

CPC分类号： G01J3/46 ,  G01J3/462 ,  G01J3/463 ,  G01J3/465

摘要： A spectral distribution error evaluation apparatus is used to evaluate precision of color matching between evaluation and target colors. A first weighting function generator generates a first weighting function on the basis of color matching functions, wavelength characteristics which are independent of a light source of the target color, and visual characteristics which depend on wavelengths. A second weighting function generator generates a second weighting function on the basis of light source information of selected light sources. A difference calculator calculates error values between the evaluation and target colors for respective frequencies. An evaluation value calculator applies the first and second weighting functions to the error values, and calculates the sum total of the error values as an evaluation value. In this way, a precision evaluation value which has high correlation with actual color appearance and is used to improve the color matching precision can be calculated independently of a change in condition such as a light source or the like.

摘要翻译： 光谱分布误差评估装置用于评估评估和目标颜色之间的颜色匹配的精度。 第一加权函数发生器基于颜色匹配函数产生第一加权函数，独立于目标颜色的光源的波长特性以及取决于波长的视觉特性。 第二加权函数发生器基于所选择的光源的光源信息生成第二加权函数。 差分计算器计算各个频率的评估和目标色彩之间的误差值。 评估值计算器将第一和第二加权函数应用于误差值，并将误差值的总和计算为评估值。 以这种方式，可以独立于诸如光源等条件的变化来计算与实际颜色外观高度相关并用于提高颜色匹配精度的精度评估值。

公开(公告)号：US07515300B2

公开(公告)日：2009-04-07

申请号：US10897547

申请日：2004-07-22

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： G06F15/00 ,  G06K15/00 ,  G06K9/00

CPC分类号： H04N1/54 ,  H04N1/603

摘要： An image processing method creates a lookup table having a plurality of grids. The image processing method includes the steps of selecting a grid having a small difference from a target grid from among grids whose output values are calculated; setting an output value of the selected grid as an initial value; optimizing an output value of the target grid by using the set initial value; and storing the optimized output value as an output value of the target grid.

摘要翻译： 图像处理方法创建具有多个网格的查找表。 图像处理方法包括以下步骤：从计算输出值的网格中选择与目标网格具有小差异的网格; 将所选网格的输出值设置为初始值; 通过使用设定的初始值来优化目标网格的输出值; 并将优化的输出值存储为目标网格的输出值。

公开(公告)号：US06987567B2

公开(公告)日：2006-01-17

申请号：US10434162

申请日：2003-05-09

申请人： Kosei Takahashi ,  Osamu Yamada

发明人： Kosei Takahashi ,  Osamu Yamada

IPC分类号： G01N21/25

CPC分类号： G01J3/46 ,  G01J3/462 ,  G01J3/463 ,  G01J3/465

摘要： A spectral distribution error evaluation apparatus is used to evaluate precision of color matching between evaluation and target colors. A first weighting function generator generates a first weighting function on the basis of color matching functions, wavelength characteristics which are independent of a light source of the target color, and visual characteristics which depend on wavelengths. A second weighting function generator generates a second weighting function on the basis of light source information of selected light sources. A difference calculator calculates error values between the evaluation and target colors for respective frequencies. An evaluation value calculator applies the first and second weighting functions to the error values, and calculates the sum total of the error values as an evaluation value. In this way, a precision evaluation value which has high correlation with actual color appearance and is used to improve the color matching precision can be calculated independently of a change in condition such as a light source or the like.