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71.发明授权Image processing method including means for judging a chromatic portion of an image 失效图像处理方法包括用于判断图像的彩色部分的装置
公开(公告)号：US5251023A
公开(公告)日：1993-10-05
申请号：US2679
申请日：1993-01-08
摘要： An apparatus for image processing including a processor for executing a predetermined processing on black character areas in an image represented by an input color image signal, a first judging unit for judging a chromatic portion of the image, a second judging unit for judging an achromatic portion of the image in an area which has been judged to be a chromatic portion and a controller for controlling the processor according to the judgement made by the second judging unit.
摘要翻译： 一种用于图像处理的装置，包括用于对由输入彩色图像信号表示的图像中的黑色字符区域执行预定处理的处理器，用于判断图像的彩色部分的第一判断单元，用于判断无彩色部分的第二判断单元 根据第二判断单元进行的判断，判定为有色部分的区域中的图像和用于控制处理器的控制器。
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公开(公告)号：US5065446A
公开(公告)日：1991-11-12
申请号：US201164
申请日：1988-06-02
申请人： Yoshiyuki Suzuki , Masahiro Funada , Mamoru Sato , Yukio Sato
发明人： Yoshiyuki Suzuki , Masahiro Funada , Mamoru Sato , Yukio Sato
摘要： An image data coding apparatus adopting the method of this invention includes a divider section for dividing an image having gray levels into a plurality of blocks, each consisting of a plurality of pixels; a pre-processing section for detecting the density and the presence/absence of an edge in an image of each divided block; and a vector quantizing section for encoding an image of each block in accordance with the detected density and the presence/absence of the edge in the image of the block. The pre-processing section detects a standard deviation of density levels of the pixels included in each block. The vector quantizing section divides the density levels of the pixels included in each block into a plurality of level sections so as to obtain a code indicating the level section in which the density level of each pixel is included. In the vector quantizing section, the obtained code is again encoded by means of vector quantization.
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