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    • 7. 发明授权
    • Image processing performing color conversion on an input image
    • 对输入图像执行色彩转换的图像处理
    • US07881526B2
    • 2011-02-01
    • US11546464
    • 2006-10-12
    • Hiroyuki KawanoYuzuru SuzukiKunikazu UenoKoichi FujiiShunsuke Kodaira
    • Hiroyuki KawanoYuzuru SuzukiKunikazu UenoKoichi FujiiShunsuke Kodaira
    • G06K9/00G06K15/00
    • H04N1/40062H04N1/6016
    • An image processing apparatus performs color conversion processing on an input image. The image processing apparatus includes a block pallet conversion unit, a first color converting unit and a restoration unit. The block pallet conversion unit converts the input image in units of blocks into (i) pallet color information including pallet colors number of which is less than pixels included in one of the blocks and (ii) selection information used to select one of the pallet colors for each pixel. The first color converting unit performs color conversion on the pallet color information obtained by the block pallet conversion unit. The restoration unit selects for each pixel, based on the selection information, one of the pallet colors of the pallet color information, which is color-converted by the first color converting unit, to restores an image.
    • 图像处理装置对输入图像执行颜色转换处理。 图像处理装置包括块托盘转换单元,第一颜色转换单元和恢复单元。 块托盘转换单元将输入图像以块为单位转换成(i)托盘颜色信息,其中托盘颜色信息小于包括在一个块中的像素的托盘颜色数量,以及(ii)用于选择托盘颜色之一的选择信息 对于每个像素 第一颜色转换单元对由块托盘转换单元获得的托盘颜色信息执行颜色转换。 恢复单元根据选择信息为每个像素选择由第一颜色转换单元进行颜色转换的托盘颜色信息的托盘颜色之一,以恢复图像。