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    • 2. 发明授权
    • Image processing device
    • 图像处理装置
    • US06728425B1
    • 2004-04-27
    • US09584517
    • 2000-05-31
    • Mitsuru TokuyamaMasatsugu NakamuraMihoko TanimuraNorihide YasuokaMasaaki OhtsukiHirohumi Sakita
    • Mitsuru TokuyamaMasatsugu NakamuraMihoko TanimuraNorihide YasuokaMasaaki OhtsukiHirohumi Sakita
    • G06K932
    • H04N1/40068H04N1/40062
    • An image processing device of the present invention includes a region separating section and a filter processing section. With respect to a picture signal which is read out after resolution thereof in a sub scanning direction has been converted, the region separating section computes maximum density difference and complexity as feature parameters indicative of a characteristic of each pixel in the picture signal. Additionally, with respect to the complexity which is dependent on a size of the resolution in the sub scanning direction, the region separating section carries out a correction in accordance with the size of the resolution in the sub scanning direction, and separates the picture signal into each region by using the maximum density difference and the corrected complexity. In accordance with the size of the resolution in the sub scanning direction and each region separated by the region separating section, the filter processing section performs suitable image processing of the picture signal.
    • 本发明的图像处理装置包括区域分离部和滤波处理部。 对于在副扫描方向上的分辨率之后读出的图像信号已经被转换,区域分离部分计算最大浓度差和复杂度作为指示图像信号中每个像素的特征的特征参数。 此外,对于依赖于副扫描方向上的分辨率的大小的复杂度,区域分离部根据副扫描方向上的分辨率的大小执行校正,并将图像信号分离成 每个区域通过使用最大密度差和校正的复杂度。 根据副扫描方向上的分辨率的尺寸和由区域分离部分分开的每个区域,滤波处理部分执行图像信号的合适的图像处理。
    • 7. 发明申请
    • Image processing method, image processing apparatus, image forming apparatus, program, and storage medium
    • 图像处理方法,图像处理装置,图像形成装置,程序和存储介质
    • US20080199076A1
    • 2008-08-21
    • US12069771
    • 2008-02-13
    • Tomoe MatsuokaMichiko FujiwaraTatsuya TanakaNorihide Yasuoka
    • Tomoe MatsuokaMichiko FujiwaraTatsuya TanakaNorihide Yasuoka
    • G06K9/34
    • G06K9/38G06K9/00442G06K2209/01
    • An image processing apparatus includes: a document type automatic classification section which determines whether input image data is image data for a text document or not; a newspaper document classification section which determines whether the input image data is image data for a newspaper document or not; a segmentation process section which identifies a page-background region in the input image data; and a color correction section for, if the input image data is classified as the text document and but not the newspaper document and if a page-background removal process is to be performed to the input image data, performing a first page-background removal process to the image data, but if the input image data is classified as the text document and the newspaper document, not performing the first page-background removal process to the image data. This makes it possible to prevent deterioration of visual sharpness of the text in the document image printed on the newspaper.
    • 图像处理装置包括:文档类型自动分类部,其判断输入图像数据是否为文本文档的图像数据; 确定输入图像数据是否为报纸文件的图像数据的报纸文档分类部分; 识别输入图像数据中的页面背景区域的分割处理部分; 以及颜色校正部,用于如果输入图像数据被分类为文本文档而不是报纸文档,并且如果要对输入图像数据执行页面背景去除处理,则执行第一页面背景去除处理 对于图像数据,但是如果输入图像数据被分类为文本文档和报纸文档,则不对图像数据执行第一页面背景去除处理。 这使得可以防止打印在报纸上的文档图像中的文本的视觉清晰度的劣化。