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51. 发明授权

US07355751B2 Method and apparatus for creating color conversion table 失效
标题翻译：用于创建颜色转换表的方法和装置
公开(公告)号：US07355751B2
公开(公告)日：2008-04-08
申请号：US10464529
申请日：2003-06-19
申请人： Okinori Tsuchiya
发明人： Okinori Tsuchiya
IPC分类号： H04N1/60 , G06K9/00
CPC分类号： H04N1/6019
摘要： If the grids of a color conversion table are simply downsampled, the way ink is used (the manner of the changeover in the value of a CMYKlclm signal) differs from that color conversion table before downsampling, there is a shift in the starting point of dark ink at the point of changeover of continuous tone ink, and a decline in image quality ascribable to downsampling of the color conversion table tends to occur. Accordingly, an original LUT is read in, a parameter for selecting a grid to be downsampled is set, a table of evaluation values for selecting a grid to be downsampled is created, a grid capable of being downsampled is selected by referring to the evaluation-value table, and table data that does not contain this grid is copied.
摘要翻译：如果颜色转换表的网格被简单的下采样，墨水的使用方式（CMYKlclm信号的值的切换方式）与下采样之前的颜色转换表不同，则黑色的起点有偏差在连续色调墨水的切换点处的墨水和由于颜色转换表的下采样引起的图像质量的下降趋于发生。因此，读入原始LUT，设定用于选择下采样的网格的参数，生成用于选择下采样的网格的评估值表，通过参照评估 - 选择来选择能够进行下采样的网格，值表和不包含此网格的表数据。

52. 发明授权

US07312891B2 Image processing method and apparatus 有权
标题翻译：图像处理方法和装置
公开(公告)号：US07312891B2
公开(公告)日：2007-12-25
申请号：US10115092
申请日：2002-04-04
申请人： Okinori Tsuchiya , Shigeyasu Nagoshi
发明人： Okinori Tsuchiya , Shigeyasu Nagoshi
IPC分类号： H04N1/60 , H04N1/54 , H04N1/56 , G06K9/00
CPC分类号： G06K15/02 , G06K2215/0094 , H04N1/6033
摘要： When a color reproduction model of a device is generated, colorimetry of a 9×9×9 grid, for example, is performed utilizing equidistant signal values in the color space of the device. Generally, if the number of grid points is increased, the precision with which the color reproduction model is estimated rises but the time needed for measurement is prolonged because the number of colorimetric measurements is also increased. Accordingly, in a printer system comprising a pre-color-processing table for performing color matching and a post-color-processing table for performing color separation, color patches set non-equidistantly in RGB device color space are printed in accordance with changeover of printer CMYKcm signals in the post-color-processing table and the color reproduction model of the printer is generated using data obtained by measuring the colors of the color patches.
摘要翻译：当产生装置的色彩再现模型时，例如使用装置的色彩空间中的等距信号值来执行9×9×9格栅的比色法。通常，如果增加网格点的数量，则颜色再现模型的估计精度会上升，但由于比色测量的数量也增加，所以测量所需的时间延长。因此，在包括用于执行颜色匹配的预色处理表和用于执行颜色分离的后色处理表的打印机系统中，根据打印机的切换来打印在RGB设备色彩空间中不等距设置的色标使用通过测量色标的颜色获得的数据，生成后色处理表中的CMYKcm信号和打印机的颜色再现模型。

53. 发明授权

US07136523B2 Color correction table forming method and apparatus, control program and storage medium 有权
公开(公告)号：US07136523B2
公开(公告)日：2006-11-14
申请号：US10260558
申请日：2002-10-01
申请人： Suzuko Fukao , Shigeyasu Nagoshi , Okinori Tsuchiya
发明人： Suzuko Fukao , Shigeyasu Nagoshi , Okinori Tsuchiya
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： H04N1/6025
摘要： It aims to improve color reproducibility by enabling to control a smoothing condition for each of plural positions on color space. When a color correction table is formed by using smoothing, the smoothing conditions respectively corresponding to the plural positions on the color space are set, and then the smoothing is performed according to the smoothing conditions.

54. 发明授权

US07006668B2 Image processing method and image processing apparatus 有权
标题翻译：图像处理方法和图像处理装置
公开(公告)号：US07006668B2
公开(公告)日：2006-02-28
申请号：US09745481
申请日：2000-12-26
申请人： Ryosuke Iguchi , Yuji Akiyama , Manabu Yamazoe , Okinori Tsuchiya
发明人： Ryosuke Iguchi , Yuji Akiyama , Manabu Yamazoe , Okinori Tsuchiya
IPC分类号： G06K9/00
CPC分类号： G06T5/009 , G06T5/40 , H04N1/4074
摘要： On the basis of a discrimination parameter for discriminating more detailed brightness in an image, the brightness of the image is discriminated, and the optimum degree of correction component is set for the image, thereby performing a more faithful reproduction of the image indicated by image data. Therefore, a highlight point being a brightness value associated with a cumulative frequency of reaching a predetermined value is calculated in a high-brightness area on the basis of a histogram obtained with respect to the number of pixels of a brightness value indicated by the image data, and the image is discriminated in its entire brightness on the basis of the highlight point. On the other hand, a ratio of the cumulative frequency in a predetermined low-brightness area to the number of all the pixels in the histogram is calculated. On the basis of the calculated ratio and the discriminated brightness, a gamma value indicating degree of correction the brightness value to a value of more light image is defined. Accordingly, a suitable correction corresponding to brightness of an image can be performed.
摘要翻译：基于用于区分图像中的更详细的亮度的辨别参数，识别图像的亮度，并且为图像设置最佳的校正分量，从而对由图像数据指示的图像进行更忠实的再现。因此，基于对由图像数据指示的亮度值的像素数获得的直方图，在高亮度区域中计算与达到预定值的累积频率相关联的亮度值的亮点，并且基于高亮点以其整体亮度区分图像。另一方面，计算预定的低亮度区域中的累积频率与直方图中的所有像素数的比率。基于计算出的比率和识别亮度，定义表示亮度值与更多的光图像的值的校正程度的伽马值。因此，可以执行对应于图像的亮度的适当校正。

55. 发明授权

US06749284B2 Image processing method, printing system and printing apparatus 有权
标题翻译：图像处理方法，打印系统和打印设备
公开(公告)号：US06749284B2
公开(公告)日：2004-06-15
申请号：US10207891
申请日：2002-07-31
申请人： Shigeyasu Nagoshi , Okinori Tsuchiya
发明人： Shigeyasu Nagoshi , Okinori Tsuchiya
IPC分类号： B41J221
CPC分类号： B41J2/2056
摘要： When a printing apparatus performs printing using dark and light inks, a large variation in density caused by a rapid decrease in ink applying rate is prevented, thereby enabling proper density reproduction. More specifically, when for example, green hues of different densities are printed, light cyan ink is used between points corresponding to a variation of color from white to green. Furthermore, after the maximum saturation point, light cyan ink is used in addition to the dark cyan ink. This prevents the total applying rate from decreasing rapidly near the maximum eaturation point.
摘要翻译：当印刷装置使用深色和浅色油墨进行印刷时，防止由于油墨施加速率的快速降低而导致的密度变化很大，从而能够进行适当的密度再现。更具体地，当例如印刷不同密度的绿色色调时，在与白色到绿色的颜色变化相对应的点之间使用浅青色墨水。此外，在最大饱和点之后，除了深青色墨水之外，还使用浅青色墨水。这防止总施用率在最大吃饭点附近迅速下降。

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