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    • 2. 发明申请
    • Image Processing Device, Image Processing Method, and Program
    • 图像处理装置,图像处理方法和程序
    • US20090244664A1
    • 2009-10-01
    • US12411726
    • 2009-03-26
    • Masashi KANAI
    • Masashi KANAI
    • H04N1/46
    • H04N1/6058
    • An image processing device converts received color image data in accordance with a color gamut that an image output apparatus can express. A representative color is determined for each of a plurality of pixel aggregates formed by classifying pixels included in the color image data. An initial distribution of representative colors in a predetermined color space is set. An evaluation function takes a value increasing as a chroma difference between representative colors recedes from chroma that in the initial distribution. Apparatus color gamut data represents the color gamut that can be expressed by the image output apparatus chroma. After changing the chroma of a specific representative color in accordance with the color gamut of the image output apparatus, the chroma of the remaining representative colors is changed so that a summation of values of the evaluation function calculated between the representative colors becomes equal to or smaller than a predetermined value. The color image data with respect to each of the pixels is converted in accordance with the changes in the chroma of the representative colors chroma.
    • 图像处理装置根据图像输出装置可以表达的色域转换接收的彩色图像数据。 通过对包括在彩色图像数据中的像素进行分类而形成的多个像素聚集中的每一个确定代表性颜色。 设置预定色彩空间中的代表颜色的初始分布。 评价函数随着代表颜色之间的色度差从初始分布中的色度而减小而增加值。 设备色域数据表示可由图像输出设备色度表示的色域。 在根据图像输出装置的色域改变特定代表色的色度之后,改变剩余代表色的色度,使得在代表色之间计算出的评估函数的值的总和等于或小于 超过预定值。 根据代表色彩色度的色度的变化,转换相对于每个像素的彩色图像数据。
    • 3. 发明申请
    • COLOR CONVERSION DEVICE, IMAGE OUTPUT DEVICE, AND COLOR CONVERSION METHOD
    • 彩色转换装置,图像输出装置和彩色转换方法
    • US20090196494A1
    • 2009-08-06
    • US12363350
    • 2009-01-30
    • Masashi KANAI
    • Masashi KANAI
    • G06K9/00
    • H04N9/67G09G5/06G09G2360/145H04N9/3182
    • A color conversion device which converts an image signal in a first color space into an image signal in a second color space corresponding to an image output unit includes: a color conversion table storing unit which stores a color conversion table storing color conversion data used for converting an image signal corresponding to a plurality of lattice points in a third color space having a color range containing the color range of the second color space into the image signal in the second color space; a first color conversion unit which converts the image signal in the first color space into the image signal in the third color space; and a second color conversion unit which converts the image signal in the third color space into the image signal in the second color space based on the color conversion data stored in the color conversion table. The first color conversion unit converts an image signal corresponding to a reference color in the first color space into an image signal corresponding to the lattice points in the third color space.
    • 一种将第一颜色空间中的图像信号转换为对应于图像输出单元的第二颜色空间中的图像信号的颜色转换装置包括:颜色转换表存储单元,其存储存储用于转换的颜色转换数据的颜色转换表 对应于具有包含第二颜色空间的颜色范围的颜色范围的第三颜色空间中的多个格点的图像信号转换成第二颜色空间中的图像信号; 第一颜色转换单元,其将第一颜色空间中的图像信号转换为第三颜色空间中的图像信号; 以及第二颜色转换单元,其基于存储在颜色转换表中的颜色转换数据将第三颜色空间中的图像信号转换为第二颜色空间中的图像信号。 第一颜色转换单元将对应于第一颜色空间中的参考颜色的图像信号转换为与第三颜色空间中的格点对应的图像信号。
    • 10. 发明申请
    • IMAGE PROCESSOR, IMAGE DISPLAY DEVICE, AND IMAGE PROCESSING METHOD
    • 图像处理器,图像显示装置和图像处理方法
    • US20100119150A1
    • 2010-05-13
    • US12603200
    • 2009-10-21
    • Masashi KANAI
    • Masashi KANAI
    • G06K9/00G06K9/40H04N9/31
    • H04N5/205H04N9/3182H04N9/77
    • An image processor that corrects an image signal, includes: a frequency analysis section that analyzes a spatial frequency of a luminance component of the image signal; a luminance component correction amount calculating section that calculates an amount of correction of the luminance component of the image signal according to the analysis result of the frequency analysis section only for an image signal in a predetermined luminance level range of a predetermined spatial frequency band; and a luminance component correcting section that corrects the luminance component of the image signal by using the amount of correction calculated by the luminance component correction amount calculating section.
    • 一种校正图像信号的图像处理器,包括:分析图像信号的亮度分量的空间频率的频率分析部; 亮度分量校正量计算部分,仅根据预定空间频带的预定亮度级范围内的图像信号,根据频率分析部分的分析结果来计算图像信号的亮度分量的校正量; 以及亮度分量校正部,其通过使用由亮度分量校正量计算部计算出的校正量来校正图像信号的亮度分量。