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    • 2. 发明申请
    • Apparatus and method for dithering for multi-toning
    • 用于多色调抖动的装置和方法
    • US20070153332A1
    • 2007-07-05
    • US11607954
    • 2006-12-04
    • Yun-tae KimChang-yeong KimHeui-keun ChohDu-sik Park
    • Yun-tae KimChang-yeong KimHeui-keun ChohDu-sik Park
    • H04N1/405
    • G06T11/001G06T5/50
    • A method and apparatus for dithering for multi-toning are provided. The apparatus includes a mask-pattern-generating unit that generates a mask pattern on R channel, G channel and B channel by selecting pattern values constituting the mask pattern on the channels based on randomly-determined seed values; a spatial-weight-determining unit that determines the weight for spatial dithering by using the pattern values and K-bit LSB data of the high-tone input image; and an output unit that outputs an M-bit image by applying the weight to M-bit input image data, exempting the K-bit LSB data, in a dithering apparatus for expressing an M+K bit high-tone input image in an M-bit low-tone output device.
    • 提供了用于多色调抖动的方法和装置。 该装置包括:掩模图案生成单元,其基于随机确定的种子值,通过在信道上选择构成掩模图案的图案值,在R信道,G信道和B信道上生成掩模图案; 空间权重确定单元,其通过使用高色调输入图像的图案值和K比特LSB数据来确定空间抖动的权重; 以及输出单元,通过将M比特输入图像数据的权重应用于M比特输入图像数据来输出M比特图像,该K比特LSB数据在用于表示M + K位高音输入图像的抖动装置中用于表示M 位低音输出设备。
    • 3. 发明授权
    • Apparatus and method for dithering for multi-toning
    • 用于多色调抖动的装置和方法
    • US08111429B2
    • 2012-02-07
    • US11607954
    • 2006-12-04
    • Yun-tae KimChang-yeong KimHeui-keun ChohDu-sik Park
    • Yun-tae KimChang-yeong KimHeui-keun ChohDu-sik Park
    • H04N1/405
    • G06T11/001G06T5/50
    • A method and apparatus for dithering for multi-toning are provided. The apparatus includes a mask-pattern-generating unit that generates a mask pattern on R channel, G channel and B channel by selecting pattern values constituting the mask pattern on the channels based on randomly-determined seed values; a spatial-weight-determining unit that determines the weight for spatial dithering by using the pattern values and K-bit LSB data of the high-tone input image; and an output unit that outputs an M-bit image by applying the weight to M-bit input image data, exempting the K-bit LSB data, in a dithering apparatus for expressing an M+K bit high-tone input image in an M-bit low-tone output device.
    • 提供了用于多色调抖动的方法和装置。 该装置包括:掩模图案生成单元,其基于随机确定的种子值,通过在信道上选择构成掩模图案的图案值,在R信道,G信道和B信道上生成掩模图案; 空间权重确定单元,其通过使用高色调输入图像的图案值和K比特LSB数据来确定空间抖动的权重; 以及输出单元,通过将M比特输入图像数据的权重应用于M比特输入图像数据来输出M比特图像,该K比特LSB数据在用于表示M + K位高音输入图像的抖动装置中用于表示M 位低音输出设备。