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2. 发明授权

US06614943B1 Method of image binary coding and image binary coding apparatus 失效
标题翻译：图像二进制编码方法和图像二进制编码装置
公开(公告)号：US06614943B1
公开(公告)日：2003-09-02
申请号：US09364458
申请日：1999-07-30
申请人： Hiroyuki Morimatsu , Michiteru Shichiro
发明人： Hiroyuki Morimatsu , Michiteru Shichiro
IPC分类号： G06K940
CPC分类号： H04N1/52
摘要： A multi-gradation image having a plurality of colors is binary coded by processing halftones in a pseudo manner. After the binary coding, an undesirable overlaying of colors on the image is eliminated so that image quality can be improved and also process load can be alleviated. A detailed process is this: Colors at a target pixel are binary coded, and the results are retained as data. When a color following the color already binary coded is processed, the retained data of the preceding color is referred to, thereby avoiding an undesirable composite black due to an overlaying of three primary colors on the same pixel. When the colors of an input image include black (K), this K is firstly binary coded at the target pixel, and when K is output, the other colors are halted outputting or a threshold value is set so that the other colors are not output. When K is not output, the other colors are binary coded in the order of higher density or higher visual sensitivity so that a quality image can be output.
摘要翻译：通过以伪方式处理半色调，具有多种颜色的多灰度图像被二进制编码。在二进制编码之后，消除了图像上不期望的颜色重叠，从而可以提高图像质量，并且还可以减轻处理负担。一个详细的过程是：目标像素的颜色是二进制编码的，结果保留为数据。当处理已经是二进制编码的颜色的颜色时，参考前一颜色的保留数据，从而避免了由于在相同像素上叠加三原色造成的不期望的复合黑色。当输入图像的颜色包括黑色（K）时，该K首先在目标像素处被二进制编码，并且当输出K时，其它颜色被停止输出或者设置阈值以使得其它颜色不被输出。当不输出K时，其他颜色按照较高密度或更高的视觉灵敏度的顺序进行二进制编码，从而可以输出质量图像。

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