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    • 3. 发明申请
    • IMAGE PROCESSING APPARATUS AND METHOD THEREOF
    • 图像处理装置及其方法
    • US20070064271A1
    • 2007-03-22
    • US11468072
    • 2006-08-29
    • Woo-jun CHUNG
    • Woo-jun CHUNG
    • H04N1/405
    • H04N1/4058H04N1/52
    • An image processing method and apparatus using the same. The method includes converting a continuous-tone color image into a plurality of intermediate images corresponding to a plurality of colors, dividing a first intermediate image among the plurality of intermediate images into a plurality of first screen cells of which a size and a shape are uniform in correspondence with a plurality of unit print areas, and performing half-toning on a first intermediate image, and dividing a second intermediate image among the plurality of intermediate images into a plurality of second screen cells of which the size and the shape are non-uniform and are not in correspondence with the plurality of the unit print areas, and performing the half-toning on the second intermediate image. Thus, printing can be performed at a fast speed with optimal picture quality.
    • 一种图像处理方法和使用该方法的装置。 该方法包括:将连续色调彩色图像转换为与多种颜色相对应的多个中间图像,将多个中间图像中的第一中间图像分割成尺寸和形状均匀的多个第一屏幕单元 与多个单位打印区域对应,并且对第一中间图像执行半色调,并且将所述多个中间图像中的第二中间图像划分为多个第二屏幕单元,其大小和形状为非 - 并且不与多个单位打印区域对应,并且对第二中间图像执行半色调。 因此,可以以最佳图像质量以快速的速度进行打印。
    • 5. 发明申请
    • ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND HALFTONING CORRECTION METHOD THEREOF
    • 电子图像形成装置及其修正方法
    • US20080055650A1
    • 2008-03-06
    • US11685883
    • 2007-03-14
    • Woo-jun CHUNGSang-ho Kim
    • Woo-jun CHUNGSang-ho Kim
    • G06K15/00
    • H04N1/4051H04N1/387
    • An electrophotographic image forming apparatus and a halftoning correction method thereof are provided. The electrophotographic image forming apparatus according to the example embodiments of the present invention, comprises a storage unit storing a plurality of dot patterns representing print characteristics of a print engine, a data area dividing unit dividing halftoned print data into data areas respectively having the same size as the dot patterns, a pattern extraction unit extracting an appropriate dot pattern with respect to each of the divided data areas by comparing dots in the data areas to the dot patterns, and a pattern converter changing the data area to the extracted dot pattern. Therefore, an optimal halftoned image can be provided.
    • 提供一种电照相成像设备及其半色调校正方法。 根据本发明的示例性实施例的电子照相图像形成装置包括存储单元,其存储表示打印引擎的打印特性的多个点图案,数据区域划分单元将半色调打印数据分割成分别具有相同尺寸的数据区域 作为点图案,图案提取单元通过将数据区域中的点与点图案进行比较,并且将数据区域改变为提取的点图案,从而提取相对于每个分割数据区域的适当点图案。 因此,可以提供最佳的半色调图像。