公开(公告)号：US20120218572A1

公开(公告)日：2012-08-30

申请号：US13370237

申请日：2012-02-09

申请人： Mayuko Kishino ,  Shinichi Miyazaki ,  Toshiki Miyazaki

发明人： Mayuko Kishino ,  Shinichi Miyazaki ,  Toshiki Miyazaki

IPC分类号： H04N1/60 ,  G06K9/00

CPC分类号： H04N1/6005 ,  H04N1/6058 ,  H04N1/6061 ,  H04N1/6066

摘要： With an apparatus according to the present invention, when an input color gamut is compressed to an output color gamut, based on the difference value between the lightness of paper white and the lightness at the maximum chroma in the output color gamut of a predetermined hue, if the lightness difference is below a predetermined threshold value, a compression convergence point is set at a position at which lightness is lower than or equal to the lightness at the maximum chroma in the output color gamut. This suppresses reduction of the gradation in the direction of input chroma, and makes it possible to compress the input color gamut to the output color gamut such that excellent color reproduction is achieved while the gradations of lightness and chroma in the input color space are maintained.

摘要翻译： 利用根据本发明的装置，当输入色域被压缩到输出色域时，基于预定色调的输出色域中的白色亮度和最大色度之间的亮度之间的差值， 如果亮度差低于预定阈值，则将压缩收敛点设置在亮度低于或等于输出色域中的最大色度的亮度的位置处。 这抑制了输入色度方向上的灰度的降低，并且使得可以将输入色域压缩到输出色域，使得在保持输入色彩空间中的亮度和色度的灰度的同时实现优异的色彩再现。

公开(公告)号：US08619349B2

公开(公告)日：2013-12-31

申请号：US13370237

申请日：2012-02-09

申请人： Mayuko Kishino ,  Shinichi Miyazaki ,  Toshiki Miyazaki

发明人： Mayuko Kishino ,  Shinichi Miyazaki ,  Toshiki Miyazaki

IPC分类号： H04N1/60

CPC分类号： H04N1/6005 ,  H04N1/6058 ,  H04N1/6061 ,  H04N1/6066

摘要： With an apparatus according to the present invention, when an input color gamut is compressed to an output color gamut, based on the difference value between the lightness of paper white and the lightness at the maximum chroma in the output color gamut of a predetermined hue, if the lightness difference is below a predetermined threshold value, a compression convergence point is set at a position at which lightness is lower than or equal to the lightness at the maximum chroma in the output color gamut. This suppresses reduction of the gradation in the direction of input chroma, and makes it possible to compress the input color gamut to the output color gamut such that excellent color reproduction is achieved while the gradations of lightness and chroma in the input color space are maintained.

摘要翻译： 利用根据本发明的装置，当输入色域被压缩到输出色域时，基于预定色调的输出色域中的白色亮度和最大色度之间的亮度之间的差值， 如果亮度差低于预定阈值，则将压缩收敛点设置在亮度低于或等于输出色域中的最大色度的亮度的位置处。 这抑制了输入色度方向上的灰度的降低，并且使得可以将输入色域压缩到输出色域，使得在保持输入色彩空间中的亮度和色度的灰度的同时实现优异的色彩再现。

公开(公告)号：US08885932B2

公开(公告)日：2014-11-11

申请号：US13358474

申请日：2012-01-25

申请人： Shinichi Miyazaki ,  Mayuko Kishino ,  Toshiki Miyazaki

发明人： Shinichi Miyazaki ,  Mayuko Kishino ,  Toshiki Miyazaki

IPC分类号： G06K9/00 ,  H04N1/60

CPC分类号： H04N1/603 ,  H04N1/6058

摘要： When a grid point that is the object to be mapped is present in a first division region a color of which has lightness equal to or higher than the lightness at the maximum chroma point in the color gamut and has chroma higher than the chroma at that point, the intersection of a straight line connecting the grid point to the maximum chroma point and an achromatic axis is calculated and a point having lightness equal to or higher than the lightness of the intersection is set as the focal color. Then, the intersection of a straight line connecting the object grid point to the focal color and the boundary of color gamut is set as an output color for the grid point. The output colors are prevented from being separated into color on the high and on the low lightness sides with respect to the maximum chroma point.

摘要翻译： 当作为要映射的对象的网格点存在于第一分割区域中时，其颜色的亮度等于或高于色域中最大色度点处的亮度，并且具有高于该点处色度的色度 计算将网格点连接到最大色度点和无彩色轴的直线的交点，将亮度等于或高于交点的亮度的点设定为焦点颜色。 然后，将连接对象网格点的直线与焦点颜色和色域边界的交点设置为网格点的输出颜色。 防止输出颜色相对于最大色度点在高亮度和低亮度侧分离为彩色。

公开(公告)号：US20120195498A1

公开(公告)日：2012-08-02

申请号：US13358474

申请日：2012-01-25

申请人： Shinichi Miyazaki ,  Mayuko Kishino ,  Toshiki Miyazaki

发明人： Shinichi Miyazaki ,  Mayuko Kishino ,  Toshiki Miyazaki

IPC分类号： G06K9/00

CPC分类号： H04N1/603 ,  H04N1/6058

摘要： When a grid point that is the object to be mapped is present in a first division region a color of which has lightness equal to or higher than the lightness at the maximum chroma point in the color gamut and has chroma higher than the chroma at that point, the intersection of a straight line connecting the grid point to the maximum chroma point and an achromatic axis is calculated and a point having lightness equal to or higher than the lightness of the intersection is set as the focal color. Then, the intersection of a straight line connecting the object grid point to the focal color and the boundary of color gamut is set as an output color for the grid point. The output colors are prevented from being separated into color on the high and on the low lightness sides with respect to the maximum chroma point.

摘要翻译： 当作为要映射的对象的网格点存在于第一分割区域中时，其颜色的亮度等于或高于色域中最大色度点处的亮度，并且具有高于该点处色度的色度 计算将网格点连接到最大色度点和无彩色轴的直线的交点，将亮度等于或高于交点的亮度的点设定为焦点颜色。 然后，将连接对象网格点的直线与焦点颜色和色域边界的交点设置为网格点的输出颜色。 防止输出颜色相对于最大色度点在高亮度和低亮度侧分离为彩色。