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1. 发明授权

US5278640A Color modification utilizing two coefficients 失效
标题翻译：使用两个系数的颜色修改
公开(公告)号：US5278640A
公开(公告)日：1994-01-11
申请号：US587356
申请日：1990-09-24
申请人： Masao Aizu , Mitsuhiro Hamashima , Tsutomu Nakagawa , Shunsuke Mukasa , Takashi Uchiyama , Haruo Wakabayashi
发明人： Masao Aizu , Mitsuhiro Hamashima , Tsutomu Nakagawa , Shunsuke Mukasa , Takashi Uchiyama , Haruo Wakabayashi
IPC分类号： H04N1/60 , H04N1/46
CPC分类号： H04N1/6016 , H04N1/6019
摘要： A pictorial image comprising pixels represented by a combination of density values in respect to first color components (R, G, B) is transformed to a pictorial image comprising pixels represented by combination of density values in respect to second color components (C, M, Y). In accordance with the first color modification method, an operation expressed as Q=.alpha.P+.beta. is implemented to an original density value P using two correction coefficients .alpha. and .beta. determined in advance to determine a density value Q after transformation. In addition, in accordance with the second color modification method, density values after transformation are determined by the calculation of the k-th degree masking equation using the k-th degree masking coefficients. At this time, a color cube is defined with respect to the first color components. The color cube thus defined is devided into an n number of blocks. The k-th degree masking coefficients are defined every respective blocks. Then, calculation of the k-th degree masking equation is performed using the k-th degree masking coefficients defined with respect to blocks involving points indicative of original density values within the color cube.
摘要翻译：包括由相对于第一颜色分量（R，G，B）的密度值的组合表示的像素的图形图像被变换为包括由相对于第二颜色分量（C，M，B）的密度值的组合表示的像素的图形图像， Y）。根据第一颜色修正方法，使用预先确定的两个校正系数（α）和（β）将表示为Q =（α）P +（β）的操作实现为原始浓度值P，以确定密度值Q 改造后。此外，根据第二颜色修正方法，通过使用第k度掩蔽系数的k次掩蔽方程的计算来确定变换后的浓度值。此时，相对于第一颜色分量定义着色立方体。这样定义的颜色立方体分为n个块。每个相应块定义第k度掩蔽系数。然后，使用针对指示色立方体内的原始浓度值的点的块定义的第k度掩蔽系数来执行第k度掩蔽方程的计算。

2. 发明授权

US4975769A Apparatus for color modification adapted to represent the pictorial image 失效
标题翻译：用于颜色修改的装置，用于表示图形图像
公开(公告)号：US4975769A
公开(公告)日：1990-12-04
申请号：US320306
申请日：1989-03-06
申请人： Masao Aizu , Mitsuhiro Hamashima , Tsutomu Nakagawa , Shunsuke Mukasa , Takashi Uchiyama , Haruo Wakabayashi
发明人： Masao Aizu , Mitsuhiro Hamashima , Tsutomu Nakagawa , Shunsuke Mukasa , Takashi Uchiyama , Haruo Wakabayashi
IPC分类号： H04N1/60
CPC分类号： H04N1/6016 , H04N1/6019
摘要： A pictorial image comprising pixels represented by a combination of density values in respect to first color components (R, G, B) is transformed to a pictorial image comprising pixels represented by combination of density values in respect to second color components (C, M, Y). In accordance with the first color modification method, an operation expressed as Q=.alpha.P+.beta. is implemented to an original density value P using two correction coefficients .alpha. and .beta. determined in advance to determine a density value Q after transformation. In addition, in accordance with the second color modification method, density values after transformation are determined by the calculation of the k-th degree masking equation using the k-th degree masking coefficients. At this time, a color cube is defined with respect to the first color components. The color cube thus defined is divided into an n number of blocks. The k-th degree masking coefficients are defined every respective blocks. Then, calculation of the k-th degree masking equation is performed using the k-th degree masking coefficients defined with respect to blocks involving points indicative of original density values within the color cube.
摘要翻译： PCT No.PCT / JP88 / 00675 Sec。 371日期：1989年3月6日 102（e）日期1989年3月6日PCT Filed 1988年7月6日PCT Pub。出版物WO89 / 00317 日期：1989年1月12日。包括由相对于第一颜色分量（R，G，B）的浓度值的组合表示的像素的图形图像被变换为包括由相对于第二颜色分量颜色成分（C，M，Y）。根据第一种颜色修正方法，使用预先确定的两个校正系数α和β将表示为Q =αP +β的操作实施为原始密度值P，以确定变换后的密度值Q。此外，根据第二颜色修正方法，通过使用第k度掩蔽系数的k次掩蔽方程的计算来确定变换后的浓度值。此时，相对于第一颜色分量定义着色立方体。这样定义的颜色立方体被分成n个块。每个相应块定义第k度掩蔽系数。然后，使用针对指示色立方体内的原始浓度值的点的块定义的第k度掩蔽系数来执行第k度掩蔽方程的计算。

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