公开(公告)号：US06385344B2

公开(公告)日：2002-05-07

申请号：US09075534

申请日：1998-05-11

申请人： Yukio Irie ,  Shinya Okada ,  Aya Nakadai ,  Yoshiyuki Okada

发明人： Yukio Irie ,  Shinya Okada ,  Aya Nakadai ,  Yoshiyuki Okada

IPC分类号： G06K936

CPC分类号： H04N1/405

摘要： An operator can select image processing for a half tone image area among a plurality of processing methods, and image processing appropriate for the image can be carried out thereby. An original image is read by an image sensor 1 and output through either simple binary conversion by binary conversion means 3 for character processing or half tone image processing by binary conversion means 2 for photograph processing. Judging means 6 judges whether image data are of a character image area or a half tone image area, and switches output between the binary conversion means 3 for character processing and the binary conversion means 2 for photograph processing. The binary conversion means 2 for photograph processing includes error diffusion processing means 10 and dither processing means 11. By setting of setting means 13 carried out by an operator, output from either the error diffusion processing means 10 or the dither processing means 11 is selected for a half tone image.

摘要翻译： 操作员可以在多种处理方法中选择半色调图像区域的图像处理，从而可以执行适合于图像的图像处理。 原始图像由图像传感器1读取，并通过用于字符处理的二进制转换装置3的简单二进制转换或用于照片处理的二进制转换装置2的半色调图像处理来输出。 判断装置6判断图像数据是字符图像区域还是半色调图像区域，并且切换用于字符处理的二进制转换装置3和用于照片处理的二进制转换装置2之间的输出。 用于照片处理的二进制转换装置2包括误差扩散处理装置10和抖动处理装置11.通过设置由操作者进行的设定装置13，选择从误差扩散处理装置10或抖动处理装置11输出的 半色调图像。