公开(公告)号：EP3200440A1

公开(公告)日：2017-08-02

申请号：EP17152990.2

申请日：2017-01-25

申请人： Funai Electric Co., Ltd.

发明人： TOSHIHIRO, Shunsaku ,  NAKASE, Masakazu

IPC分类号： H04N1/40

CPC分类号： G06K15/1847 ,  G06K15/181 ,  G06K15/1876 ,  H04N1/40075

摘要： The invention provides an image forming device (10), which can generate a multi-valued image based on a binary image. An image forming device (10) includes: an image acquisition part (110) for acquiring a binary image; and a multi-valued image generation part (120) generating a multi-valued image including a specific pixel based on pixel values of pixels within a first image region with a first size including the specific pixel and pixel values of pixels within a second image region with a second size different from the first size including the specific pixel in the binary image.

摘要翻译： 本发明提供了一种图像形成装置（10），其能够基于二值图像生成多值图像。 图像形成装置（10）包括：图像获取部（110），获取二值图像; 和多值图像生成部分（120），其基于具有第一尺寸的第一图像区域内的像素的像素值来生成包括特定像素的多值图像，所述第一尺寸包括所述特定像素和第二图像区域内的像素的像素值 具有与包括二值图像中的特定像素的第一尺寸不同的第二尺寸。

公开(公告)号：EP2884730A1

公开(公告)日：2015-06-17

申请号：EP14193846.4

申请日：2014-11-19

申请人： Ricoh Company, Ltd.

发明人： Chandu, Kartheek ,  Stanich, Mikel John

IPC分类号： H04N1/40

CPC分类号： H04N1/40068 ,  H04N1/40075 ,  H04N1/40087 ,  H04N1/405

摘要： A method is disclosed. The method includes receiving a first image as a binary periodic Halftone Image (HTI) with a first resolution, scaling the image to render a second image as a continuous-tone HTI with a second resolution, and iteratively processing the scaled image to render a third image as a multibit aperiodic HTI.

摘要翻译： 公开了一种方法。 该方法包括以第一分辨率接收作为二进制周期性半色调图像（HTI）的第一图像，缩放图像以将第二图像呈现为具有第二分辨率的连续色调HTI，并且迭代地处理缩放图像以呈现第三图像 图像作为多位非周期性HTI。

公开(公告)号：EP2528316A3

公开(公告)日：2013-01-16

申请号：EP12181593.0

申请日：2007-10-09

申请人： Samsung Electronics Co., Ltd.

发明人： Chung, Woo-jun ,  Shin, Sang-youn ,  Kim, Choon-woo ,  Ryu, Byong-tae ,  Lee, Jong-ok

IPC分类号： 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.

公开(公告)号：EP2528315A3

公开(公告)日：2013-01-16

申请号：EP12181592.2

申请日：2007-10-09

申请人： Samsung Electronics Co., Ltd.

发明人： Chung, Woo-jun ,  Shin, Sang-youn ,  Kim, Choon-woo ,  Ryu, Byong-tae ,  Lee, Jong-ok

IPC分类号： 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.

公开(公告)号：EP1924075A3

公开(公告)日：2010-01-06

申请号：EP07118140.8

申请日：2007-10-09

申请人： Samsung Electronics Co., Ltd.

发明人： Chung, Woo-jun ,  Shin, Sang-youn ,  Kim, Choon-woo ,  Ryu, Byong-tae ,  Lee, Jong-ok

IPC分类号： 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.

公开(公告)号：EP1797708A1

公开(公告)日：2007-06-20

申请号：EP05805661.5

申请日：2005-09-27

申请人： Hewlett-Packard Development Company, L.P.

发明人： FISCHER, Mani ,  SHAKED, Doron ,  BREEN, Craig ,  JODRA, Rodolfo

IPC分类号： H04N1/40

CPC分类号： H04N1/40075 ,  H04N1/40068

摘要： A method includes receiving screen information related to a picture element divided into a number of subunits of the picture element (610), and determining an amount of an ink to apply to a media at a location of the picture element in response to the information (612). The subunits of the picture element have a higher resolution than the resolution of a printing apparatus at which the printing element will be reproduced.

摘要翻译： 一种方法包括：接收与被划分为图像元素的多个子单元（610）的图像元素相关的屏幕信息，并且响应于该信息确定要应用于图像元素的位置处的介质的油墨的量（ 612）。 像素的子单元具有比打印元件将被再现的打印设备的分辨率更高的分辨率。

公开(公告)号：EP0932299B1

公开(公告)日：2006-01-04

申请号：EP99300388.8

申请日：1999-01-20

申请人： ADOBE SYSTEMS INCORPORATED

发明人： Felleman, John P.

IPC分类号： H04N1/40

CPC分类号： H04N1/40075

公开(公告)号：EP1492328A3

公开(公告)日：2005-09-14

申请号：EP04253548.4

申请日：2004-06-14

申请人： Xerox Corporation

发明人： Loce, Robert P. ,  Maltz, Martin S. ,  Grzenda, Jay S.

IPC分类号： H04N1/40

CPC分类号： H04N1/40075

摘要： The tags generated in an image scanner help identify different classes of halftones. One is selected from several pixel-value mappings to provide proper compensation. That is, the one-dimensional and multi-dimensional pixel-value mappings within the color management module are selected based on halftone classification tags from the scanner. The tagging is either one bit that indicates "Low Frequency Halftone" and "Not LFHT", or, more preferably, the tag is multi-bit indicating a frequency bin that contains the frequency of the input halftone. Additionally, the multi-bit tag can indicate particular halftone screen types, such as dot screens, line screens, stochastic screens. or error diffusion.

公开(公告)号：EP1215883B1

公开(公告)日：2005-07-06

申请号：EP01310109.2

申请日：2001-12-03

申请人： Xerox Corporation

发明人： Fan, Zhigang ,  Lin, Ying-wei ,  Li, Hong

IPC分类号： H04N1/40

CPC分类号： H04N1/40075

公开(公告)号：EP1494453A2

公开(公告)日：2005-01-05

申请号：EP04015497.3

申请日：2004-07-01

申请人： Xerox Corporation

发明人： Curry, Donald J. ,  Kletter, Doron ,  Nafarieh, Asghar

IPC分类号： H04N1/40

CPC分类号： G06T5/20 ,  H04N1/40075

摘要： An efficient method and system for eliminating halftone screens from scanned documents while preserving the quality and sharpness of text and line-art is disclosed. The method and system utilizes one or more independent channels with different sensitivities (e.g., Max, High, and Low) to provide high quality frequency and magnitude estimation. The most sensitive channel (Max) derives the frequency estimate, and the remaining channels (e.g., High and Low) are combined to create the screen magnitude. The Max channel is the most sensitive and will usually report the existence of frequencies even when the screen is very weak. Therefore, the screen frequency must be additionally qualified by the screen magnitude. The screen magnitude can be interpreted as the level of confidence that the local neighborhood represents half-toned data.

摘要翻译： 从扫描的文档消除半色调网，同时保留文本和线条的质量和清晰度的有效方法和系统是游离缺失盘。 该方法和系统利用具有不同灵敏度的一个或多个独立信道（例如，最大值，高和低），以提供高品质的频率和幅度估计。 最敏感的信道（最多）导出频率估计，而其余信道（E. G.，高和低）被组合以创建屏幕大小。 最大通道是最敏感的，并希望通常报告频率的存在，即使在画面非常薄弱。 因此，屏幕频率必须附加地由幅度屏幕合格。 作为置信度水平做了当地居委会darstellt半色调数据的屏幕大小可以解释。