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热词
    • 2. 发明授权
    • Apparatus and method for processing images
    • 用于处理图像的装置和方法
    • US06249609B1
    • 2001-06-19
    • US08717071
    • 1996-09-20
    • Shinichi SunakawaKazuhiro Matsubayashi
    • Shinichi SunakawaKazuhiro Matsubayashi
    • G06K936
    • G06K9/00456G06T9/005
    • An image processing apparatus makes it possible to cut off a desired image with a high extraction rate irrespective of whether or not an inputted image has compression hysteresis. With the image processing method therefor, the inputted image data are at first divided into small blocks, and then, frequency transformation is executed. Further, small blocks are detected with respect to those containing character areas. Subsequently, detection is made as to whether or not any non-reversible compression is processed to the frequency transformed image data. In accordance with the result of such detection, data on a table are retrieved to obtain determination threshold values. On the basis of the determination threshold values thus retrieved, the small blocks containing characters are detected for separation.
    • 图像处理装置可以无论输入的图像是否具有压缩滞后,都可以以高提取率切断期望的图像。 利用其图像处理方法,首先将输入的图像数据分成小块,然后执行频率变换。 此外,对于包含字符区域的块,检测到小块。 随后,检测是否对频率变换后的图像数据进行任何不可逆压缩处理。 根据这种检测的结果,检索表上的数据以获得确定阈值。 基于如此检索的确定阈值,检测包含字符的小块以进行分离。