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1. 发明申请

US20080239335A1 ENCODING AND DECODING METHOD FOR ENHANCING DEPTH RESOLUTION OF AN IMAGE, AND PRINT SYSTEM USING THE SAME 审中-公开
标题翻译：用于增强图像深度分辨率的编码和解码方法以及使用该图像的打印系统
公开(公告)号：US20080239335A1
公开(公告)日：2008-10-02
申请号：US11850894
申请日：2007-09-06
申请人： Ho-keun LEE , Sang-ho Kim , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
发明人： Ho-keun LEE , Sang-ho Kim , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
IPC分类号： G06K15/00
CPC分类号： H04N19/14 , H04N19/176 , H04N19/90
摘要： A print system having an enhanced depth resolution of an image. The print system includes a host device to divide a gray image into basic block units, to determine whether the basic block units represent an edge area, to convert the gray image into binary data, and to output the converted gray image; and an image forming apparatus to determine whether the binary data received from the host device represents an edge area, to convert the binary data into a gray image according to the result of determination, and to print the gray image. As a result, depth resolution is enhanced, and print data transmission time is shortened.
摘要翻译：具有增强的图像深度分辨率的打印系统。打印系统包括：主机，用于将灰度图像划分为基本块单元，以确定基本块单元是否表示边缘区域，将灰度图像转换为二进制数据，并输出转换的灰度图像; 以及图像形成装置，用于确定从主机设备接收的二进制数据是否表示边缘区域，根据确定结果将二进制数据转换成灰度图像，并打印灰度图像。结果，增强了深度分辨率，并且缩短了打印数据传输时间。

2. 发明授权

US08199363B2 Image processing using hybrid lookup table 失效
标题翻译：使用混合查找表的图像处理
公开(公告)号：US08199363B2
公开(公告)日：2012-06-12
申请号：US11782091
申请日：2007-07-24
申请人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
发明人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
IPC分类号： G06K15/00 , G06K9/36 , H04N1/40
CPC分类号： H04N1/40075 , H04N1/40068
摘要： An image processing method and an image processing apparatus converts a binary image into a grayscale image by increasing the size and information quantity of the binary image. The image processing method includes generating a plurality of lookup tables having multiple gray level values assigned to a predetermined pattern of the binary image such that the gray level is retrieved from the plurality of lookup tables depending on the context of the block being processed. The binary image may be converted into the grayscale image by applying the gray value of one of the plurality of lookup tables that corresponds to the context, such as the frequency components of the binary image. With this configuration, since the size and information quantity of an image can be reduced for transmission, it is possible to prevent deterioration of image quality when the image is restored, while also printing at a higher speed.
摘要翻译：图像处理方法和图像处理装置通过增加二值图像的大小和信息量将二进制图像转换成灰度图像。图像处理方法包括生成具有分配给二进制图像的预定图案的多个灰度值的多个查找表，使得根据正被处理的块的上下文从多个查找表中检索灰度级。可以通过应用与上下文相对应的多个查找表中的一个的灰度值，例如二进制图像的频率分量，将二进制图像转换成灰度图像。利用这种配置，由于可以减小图像的尺寸和信息量以进行传输，所以可以防止当图像恢复时图像质量的劣化，同时也以更高的速度进行打印。

3. 发明申请

US20080117465A1 IMAGE PROCESSING USING HYBRID LOOKUP TABLE 失效
标题翻译：使用混合查找表的图像处理
公开(公告)号：US20080117465A1
公开(公告)日：2008-05-22
申请号：US11782091
申请日：2007-07-24
申请人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
发明人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
IPC分类号： H04N1/405
CPC分类号： H04N1/40075 , H04N1/40068
摘要： An image processing method and an image processing apparatus converts a binary image into a grayscale image by increasing the size and information quantity of the binary image. The image processing method includes generating a plurality of lookup tables having multiple gray level values assigned to a predetermined pattern of the binary image such that the gray level is retrieved from the plurality of lookup tables depending on the context of the block being processed. The binary image may be converted into the grayscale image by applying the gray value of one of the plurality of lookup tables that corresponds to the context, such as the frequency components of the binary image. With this configuration, since the size and information quantity of an image can be reduced for transmission, it is possible to prevent deterioration of image quality when the image is restored, while also printing at a higher speed.
摘要翻译：图像处理方法和图像处理装置通过增加二值图像的大小和信息量将二进制图像转换成灰度图像。图像处理方法包括生成具有分配给二进制图像的预定图案的多个灰度值的多个查找表，使得根据正被处理的块的上下文从多个查找表中检索灰度级。可以通过应用与上下文相对应的多个查找表中的一个的灰度值，例如二进制图像的频率分量，将二进制图像转换成灰度图像。利用这种配置，由于可以减小图像的尺寸和信息量以进行传输，所以可以防止当图像恢复时图像质量的劣化，同时也以更高的速度进行打印。

4. 发明申请

US20080100856A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD THEREOF 审中-公开
标题翻译：图像形成装置及其图像形成方法
公开(公告)号：US20080100856A1
公开(公告)日：2008-05-01
申请号：US11767016
申请日：2007-06-22
申请人： Hae-kee Lee , Ho-keun Lee , Choon-woo Kim , Jong-ok Jee , Byong-tae Ryu
发明人： Hae-kee Lee , Ho-keun Lee , Choon-woo Kim , Jong-ok Jee , Byong-tae Ryu
IPC分类号： G06F15/00
CPC分类号： H04N1/4105
摘要： An image forming apparatus, including a halftone image converter to convert input image data having a plurality of bits per pixel into halftone image data having a binary pixel value corresponding to a bright pixel or a dark pixel, and a bit encoder to divide the halftone image data into blocks with a predetermined size, and to perform a bit-encoding operation by using the number of either the bright or dark pixels in the block to output encoded image data.
摘要翻译：一种图像形成装置，包括半色调图像转换器，用于将具有每像素多个位的输入图像数据转换成具有对应于亮像素或暗像素的二进制像素值的半色调图像数据和用于分割半色调图像的位编码器数据转换为具有预定大小的块，并且通过使用块中的亮或暗像素的数量来执行位编码操作，以输出编码图像数据。

5. 发明申请

US20060290988A1 Methods for setting frequency rate and angle difference between screens where moire pattern is not generated 审中-公开
标题翻译：用于设置不产生云纹图案的屏幕之间的频率和角度差的方法
公开(公告)号：US20060290988A1
公开(公告)日：2006-12-28
申请号：US11433669
申请日：2006-05-15
申请人： Sang-ho Kim , Byong-min Kang , Choon-woo Kim , Seul-ki Jang
发明人： Sang-ho Kim , Byong-min Kang , Choon-woo Kim , Seul-ki Jang
IPC分类号： H04N1/405
CPC分类号： H04N1/52 , H04N1/4058
摘要： A method of setting frequency rate and angle differences between screens where moire patterns are not generated is provided. The method of setting the frequency rate and angle differences of the screens includes forming a binary image using at least two overlapped screens, and low-pass filtering the binary image to calculate an average reflectivity. A frequency component (cost) is calculated with respect to the binary image using the calculated average reflectivity. It is determined whether a moire pattern with respect to the binary image is generated based on the frequency component. Accordingly, the binary image where the moire pattern is not generated may be formed.
摘要翻译：提供了一种设置不产生莫尔图案的屏幕之间的频率和角度差异的方法。设置屏幕的频率和角度差的方法包括使用至少两个重叠屏幕形成二进制图像，并对二进制图像进行低通滤波以计算平均反射率。使用计算出的平均反射率来计算相对于二值图像的频率分量（成本）。基于频率分量确定是否生成相对于二进制图像的莫尔图案。因此，可以形成不产生莫尔图案的二值图像。

6. 发明申请

US20050134880A1 Color error diffusion method and apparatus therefor 审中-公开
标题翻译：颜色误差扩散方法及其设备
公开(公告)号：US20050134880A1
公开(公告)日：2005-06-23
申请号：US10996059
申请日：2004-11-24
申请人： Ki-min Kang , Goo-soo Gahang , Choon-woo Kim , Hyeon-seok Seo
发明人： Ki-min Kang , Goo-soo Gahang , Choon-woo Kim , Hyeon-seok Seo
IPC分类号： H04N1/40 , G03F3/08 , G06F15/00 , H04N1/52
CPC分类号： H04N1/52
摘要： An apparatus and method of diffusing a color error which includes modulating a threshold value using a binary error of different color channels, to prevent overlapping of dots of a channel, when a sum of input values of the different color channels is not more than a predetermined value, determining a channel whose color is to be output by comparing a corrected input value of each channel in which an error is diffused and binarizing a color channel by comparing the modulation threshold value with the corrected input value of the determined channel.
摘要翻译：一种扩散颜色误差的装置和方法，包括：当不同颜色通道的输入值之和不大于预定值时，包括使用不同颜色通道的二进制误差来调制阈值，以防止信道点重叠通过将调制阈值与所确定的频道的校正输入值进行比较来确定通过比较其中扩散了误差的每个通道的校正输入值并对颜色通道进行二值化来确定其颜色将被输出的通道。

7. 发明授权

US07619777B2 Method of generating halftone screen and system thereof 失效
标题翻译：产生半色调网屏的方法及其系统
公开(公告)号：US07619777B2
公开(公告)日：2009-11-17
申请号：US11390252
申请日：2006-03-28
申请人： Hae-kee Lee , Goo-soo Gahang , Byung-min Kang , Choon-woo Kim
发明人： Hae-kee Lee , Goo-soo Gahang , Byung-min Kang , Choon-woo Kim
IPC分类号： H04N1/405
CPC分类号： H04N1/4055
摘要： A halftone screen generating method includes growing dot centers into uniform binary patterns in an input image, calculating a main distance of each dot center, forming a screen filter by using the main distance, and generating the halftone screen by using the screen filter to form a binary image. The halftone screen generating method controls cluster dots to have a predetermined main distance, and improve a printing quality by growing dot centers uniformly.
摘要翻译：半色调画面生成方法包括：将点中心成长为输入图像中的均匀二进制图案，计算每个点中心的主距离，通过使用主距离形成屏幕过滤器，并通过使用屏幕过滤器生成网版画面，以形成二进制图像。半色调画面生成方法将聚类点控制为具有预定的主要距离，并且通过均匀生长点中心来提高打印质量。

8. 发明授权

US07443542B2 Method and apparatus for determining error diffusion coefficients 有权
标题翻译：用于确定误差扩散系数的方法和装置
公开(公告)号：US07443542B2
公开(公告)日：2008-10-28
申请号：US10873506
申请日：2004-06-23
申请人： Ki-min Kang , Goo-soo Gahang , Choon-woo Kim , Hyeon-seok Seo
发明人： Ki-min Kang , Goo-soo Gahang , Choon-woo Kim , Hyeon-seok Seo
IPC分类号： G06K15/00 , H04N1/40 , H04N1/405
CPC分类号： H04N1/4052
摘要： Provided are a method and apparatus for determining error diffusion coefficients. The method includes: (a) setting N groups of error diffusion coefficients (N is a positive integer), in which each group includes a plurality of coefficients; (b) binarizing an image having one gray level value using each of the N groups of error diffusion coefficients; (c) detecting N fit values with respect to N binary-coded images using an evaluation function; (d) determining whether the fit values are detected a predetermined number of times; (e) when a detection number of the fit values does not coincide with the predetermined number of times, reproducing the N groups of error diffusion coefficients according to reproduction rates determined by the N fit values; (f) selecting optional error diffusion coefficients in the reproduced N groups of error diffusion coefficients, and substituting portions of data of selected error diffusion coefficients with each other; and (g) determining the N groups of error diffusion coefficients including the error diffusion coefficients containing substituted data as new error diffusion coefficients, and returning to step (b).
摘要翻译：提供了一种用于确定误差扩散系数的方法和装置。该方法包括：（a）设置N组误差扩散系数（N为正整数），其中每组包括多个系数; （b）使用N组误差扩散系数中的每一个二值化具有一个灰度值的图像; （c）使用评估函数检测关于N个二进制编码图像的N个拟合值; （d）确定拟合值是否被检测到预定次数; （e）当拟合值的检测次数与预定次数不一致时，根据由N拟合值确定的再现速率再现N组误差扩散系数; （f）在再现的N组误差扩散系数中选择可选的误差扩散系数，并将所选择的误差扩散系数的数据部分相互替代; （g）确定N组误差扩散系数，包括包含取代数据的误差扩散系数作为新的误差扩散系数，并返回步骤（b）。

9. 发明申请

US20050062783A1 Method and apparatus for detecting a pixel distance to adjust a threshold value 审中-公开
标题翻译：用于检测像素距离以调整阈值的方法和装置
公开(公告)号：US20050062783A1
公开(公告)日：2005-03-24
申请号：US10885897
申请日：2004-07-08
申请人： Ki-min Kang , Goo-Soo Gahang , Choon-woo Kim , Hyeon-seok Seo
发明人： Ki-min Kang , Goo-Soo Gahang , Choon-woo Kim , Hyeon-seok Seo
IPC分类号： H04N1/403 , G06K15/02 , B41J29/393
CPC分类号： G06K15/02
摘要： A method of and apparatus for detecting a pixel distance to adjust a threshold value are disclosed. The method and apparatus include determining a first coordinate of a first pixel with reference to a minor pixel for each pixel of an image, and detecting a first pixel distance which corresponds to a distance between the first pixel and the minor pixel by using the determined first coordinate, wherein the first pixel is binarized by adjusting a threshold value based on the detected first pixel distance, and the first coordinate is reset when the binarized first pixel is determined to be the minor pixel.
摘要翻译：公开了一种用于检测像素距离以调整阈值的方法和装置。该方法和装置包括：参考图像的每个像素的次要像素来确定第一像素的第一坐标，以及通过使用确定的第一像素来检测对应于第一像素和次像素之间的距离的第一像素距离坐标，其中通过基于检测到的第一像素距离调整阈值来将第一像素二值化，并且当二进制化的第一像素被确定为次要像素时，第一坐标被复位。

10. 发明申请

US20070019240A1 Method of generating halftone screen and system thereof 失效
标题翻译：产生半色调网屏的方法及其系统
公开(公告)号：US20070019240A1
公开(公告)日：2007-01-25
申请号：US11390252
申请日：2006-03-28
申请人： Hae-kee Lee , Goo-soo Gahang , Byung-min Kang , Choon-woo Kim
发明人： Hae-kee Lee , Goo-soo Gahang , Byung-min Kang , Choon-woo Kim
IPC分类号： H04N1/405
CPC分类号： H04N1/4055
摘要： A halftone screen generating method includes growing dot centers into uniform binary patterns in an input image, calculating a main distance of each dot center, forming a screen filter by using the main distance, and generating the halftone screen by using the screen filter to form a binary image. The halftone screen generating method controls cluster dots to have a predetermined main distance, and improve a printing quality by growing dot centers uniformly.
摘要翻译：半色调画面生成方法包括：将点中心成长为输入图像中的均匀二进制图案，计算每个点中心的主距离，通过使用主距离形成屏幕过滤器，并通过使用屏幕过滤器生成网版画面，以形成二进制图像。半色调画面生成方法将聚类点控制为具有预定的主要距离，并且通过均匀生长点中心来提高打印质量。

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