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公开(公告)号：US4893188A
公开(公告)日：1990-01-09
申请号：US208116
申请日：1988-06-17
CPC分类号： H04N1/40062
摘要： For halftone digital image data, an edge portion of the image is extracted for each pixel, and based on a density of each pixel or an average density of each group of a plurality of adjacent or neighboring pixels, there are extracted pixels of a background other than the edge portion of the image. Thereafter, the image data is subdivided into a plurality of blocks each including a predetermined number of pixels. Based on distribution states of the pixels of the block judged to belong to the edge and those of the block judged to belong to the background, a domain recognition is conducted to determine whether the block is a binary block or a halftone block. In addition, for each block, a state of areas in blocks encircling the block is examined such that depending on the state, an expansion/contraction processing is repeatedly achieved a predetermined times for the halftone domain, thereby separating the image data into a binary domain and a halftone domain in a real-time fashion.
摘要翻译： 对于半色调数字图像数据，为每个像素提取图像的边缘部分，并且基于每个像素的密度或多个相邻或相邻像素中的每组的平均密度，提取背景其他的像素 比图像的边缘部分。 此后，图像数据被细分为多个块，每个块包括预定数量的像素。 基于被判定为属于边缘的块的像素的分布状态和被判定为属于背景的块的像素的分布状态，进行域识别以确定块是二进制块还是半色调块。 此外，对于每个块，检查环绕该块的块的区域的状态，使得根据该状态，针对半色调域重复实现预定次数的扩展/缩小处理，从而将图像数据分离成二进制域 和实时的半色调域。
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公开(公告)号：US4937681A
公开(公告)日：1990-06-26
申请号：US347220
申请日：1989-05-04
CPC分类号： H04N19/93
摘要： A picture coding system for a document image data in which a plurality of picture coding methods are subjected to a selection such that document image data is converted so as to obtain an identification code representing the selected coding method and signals obtained by coding the data. The system includes units for detecting and for accumulating code lengths of the codes converted in the respective coding methods, units for detecting and for accumulating a difference between the lengths of the respective codes obtained by the conversion achieved in the coding methods, a storage for storing therein a history of a result of the selection of the preceding coding method, and a change-over judge unit for selecting one of the plural coding methods based on information obtained from the three kinds of units.
摘要翻译： 一种用于文档图像数据的图像编码系统，其中对多个图像编码方法进行选择，使得文件图像数据被转换以获得表示所选择的编码方法的识别码和通过对数据进行编码获得的信号。 该系统包括用于检测和累加在各个编码方法中转换的代码的代码长度的单元，用于检测并累积通过编码方法实现的转换获得的各个代码的长度之间的差异的单元，用于存储 其中选择上述编码方法的结果的历史，以及用于基于从三种单元获得的信息来选择多种编码方法之一的转换判断单元。
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公开(公告)号：US5128748A
公开(公告)日：1992-07-07
申请号：US479615
申请日：1990-02-13
申请人： Tatsuya Murakami , Masaaki Fujinawa , Hiromichi Fujisawa , Hidefumi Masuzaki , Satoshi Ito , Eiichi Hadano , Yasuo Kurosu
发明人： Tatsuya Murakami , Masaaki Fujinawa , Hiromichi Fujisawa , Hidefumi Masuzaki , Satoshi Ito , Eiichi Hadano , Yasuo Kurosu
摘要： A color document image processing apparatus comprising an image input means for inputting document image data including multivalue color image, a binarizing means for binarizing input document image data by a simple binarization or artificial binary-halftone process, an image memory means for temporarily storing image data binarized by said binarizing means, a codec means for executing predetermined coding for storing image data stored in the image memory means and executing decoding to the stored document image data, an image storing means for storing document image data encoded by the codec means, a binary-halftone transducing means for transducing binary image data decoded by the codec means into multivalue image data, and an image output means for outputting multivalue image data transduced by the binary-halftone transducing means.
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公开(公告)号：US5125045A
公开(公告)日：1992-06-23
申请号：US272447
申请日：1988-11-17
CPC分类号： H04N1/40075 , G06T3/40 , G06T3/4023 , H04N1/40062 , H04N1/4053
摘要： An image processing system wherein for an inputted composite image composed of a line image and a dither image, both a line image processing and a dither image processing are carried out in parallel, and one of the processed results is selected in accordance with the image region discrimination result. The dither image processing is carried out through data conversion for calculating multivalued gray scale image from the inputted image data, grey scale data conversion for adjusting the gray scale image data so as to match an output device and obtaining such adjusted gray scale image data, and re-binarization for re-binarizing the gray scale image data after subjected to the grey scale conversion. The image region discrimination for discriminating if an image region is of a line image or a dither image is carried out based on a ratio of the number of black or white pixels within the region to the contour line length within the range. An ordered dither image through a screened type dither matrix is discriminated in accordance with a corelation between adjacent pixel trains each having a predetermined number of pixels.
摘要翻译： 一种图像处理系统，其中对于由行图像和抖动图像组成的输入合成图像并行地执行行图像处理和抖动图像处理，并且根据图像区域选择一个处理结果 歧视结果。 通过用于从输入的图像数据计算多值灰度图像的数据转换来执行抖动图像处理，灰度数据转换用于调整灰度图像数据，以匹配输出装置并获得这样调整的灰度图像数据;以及 重新二值化，用于灰度转换后灰度图像数据的二次化。 基于区域内的黑色或白色像素的数量与该范围内的轮廓线长度的比例来执行用于鉴别图像区域是线图像还是抖动图像的图像区域辨别。 通过屏蔽型抖动矩阵的有序抖动图像根据每个具有预定数量像素的相邻像素列之间的对齐来区分。
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5.发明授权Image filing apparatus and method for thereby encoding and storing various documents 失效图像填充设备及其编码和存储各种文档的方法
公开(公告)号：US5231482A
公开(公告)日：1993-07-27
申请号：US761770
申请日：1991-08-15
申请人： Tatsuya Murakami , Eiichi Hadano , Masaaki Fujinawa , Hiromichi Fujisawa , Hidefumi Masuzaki , Tsugio Takahashi , Kazunori Kinoshita , Yasuo Kurosu , Satoshi Ito
发明人： Tatsuya Murakami , Eiichi Hadano , Masaaki Fujinawa , Hiromichi Fujisawa , Hidefumi Masuzaki , Tsugio Takahashi , Kazunori Kinoshita , Yasuo Kurosu , Satoshi Ito
CPC分类号： H04N1/642 , H04N1/4105 , H04N1/64
摘要： An image filing apparatus and method for receiving as multivalue data an image corresponding to a document, converting the data to binary image data and storing the binary image data. According to the features of the present invention, pixels of that portion of an input image corresponding to a particular color are extracted, and luminance data expressing monochromatic binary image data and binary image data designating colored portions are stored in different planes. Not only black pixels but also pixels expressed in a particular color such as red are described in the plane for the luminance data. Pixels having a particular color to be expressed in "red" such as red characters are extracted and recorded as "1" in another particular color plane, for example, in R-plane different from the luminance plane. The R-plane is recorded with binary image data; only pixels written in "red" are expressed as "1" there and other pixels as "0". When outputted, the pixels in which the contents of the luminance plane are "1" and the contents of the R-plane are "0" are displayed in black and the pixels in which the contents of the R-plane are "1" are displayed in red.
摘要翻译： PCT No.PCT / JP90 / 01630 Sec。 371日期1991年8月15日 102（e）日期1991年8月15日PCT 1990年12月13日PCT PCT。 出版物WO91 / 09488 日期：1991年6月27日。一种图像归档装置和方法，用于作为多值数据接收与文档相对应的图像，将数据转换为二进制图像数据并存储二进制图像数据。 根据本发明的特征，提取与特定颜色相对应的输入图像的该部分的像素，并且将表示单色二值图像数据的亮度数据和指定着色部分的二值图像数据存储在不同的平面中。 在亮度数据的平面中描述不仅黑色像素，而且以诸如红色的特定颜色表示的像素。 具有以红色表示的特定颜色的像素例如红色字符被提取并在另一特定色彩平面中记录为“1”，例如在与亮度平面不同的R平面中。 R平面用二进制图像数据记录; 写入“红色”的像素在此被表示为“1”，其他像素表示为“0”。 当输出时，亮度平面的内容为“1”的像素和R平面的内容为“0”，以黑色显示，R平面的内容为“1”的像素为 以红色显示。
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公开(公告)号：US5576849A
公开(公告)日：1996-11-19
申请号：US400385
申请日：1995-03-03
摘要： Monochrome multi-color, and full-color documents are automatically discriminated from each other, and character and photograph regions are also determined in an automatic manner, thereby producing appropriate binary image data according to the operation results. An image data transformation apparatus includes a binarizing section for converting image data inputted thereto into binary image data associated with a plurality of different colors, binary image data buffers for temporarily storing therein the binary image data, a decision section for deciding based on the input image data whether the monochrome, color, or multi-color output is to be produced and whether an intermediate-tone or particular color pixel is to be processed, and a binary image data selection/output section for selecting as output therefrom binary image data according to the decision results.
摘要翻译： 单色多色和全色文档被自动区分开，并且自动地确定字符和照片区域，从而根据操作结果产生适当的二进制图像数据。 图像数据变换装置包括：二进制化部分，用于将输入的图像数据转换为与多种不同颜色相关联的二值图像数据;二进制图像数据缓冲器，用于临时存储二进制图像数据;判定部分，用于基于输入图像进行判定 要生成单色，彩色或多色输出的数据是否要处理中间色调或特定彩色像素;以及二进制图像数据选择/输出部分，用于根据 决定结果。
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7.发明授权Color image processing method and apparatus with chrominance emphasizing process 失效具有色度强调过程的彩色图像处理方法和装置
公开(公告)号：US5390034A
公开(公告)日：1995-02-14
申请号：US6771
申请日：1993-01-21
申请人： Tatsuya Murakami , Eiichi Hadano , Kazuyuki Kodama , Kazunori Kinoshita , Masaaki Fujinawa , Hiromichi Fujisawa
发明人： Tatsuya Murakami , Eiichi Hadano , Kazuyuki Kodama , Kazunori Kinoshita , Masaaki Fujinawa , Hiromichi Fujisawa
CPC分类号： H04N1/40062 , H04N1/40075 , H04N1/4105
摘要： Color image processing method and apparatus for suppressing side effects of a chrominance emphasizing process are provided. A chrominance C of an original color image is detected by a chrominance detector. A luminousness V of the original color image is detected by a luminousness detector. A parameter selector selects chrominance conversion parameters on the basis of the chrominance C and luminousness V to generate a selected parameter. A chrominance converter executes the chrominance conversion by chrominance conversion parameters a to i. It is possible to suppress a side effect such that the color deviation becomes conspicuous in a portion of small chrominance and luminousness due to the execution of the chrominance emphasizing process. Thus, image data of a high quality can be obtained.
摘要翻译： 提供了用于抑制色度强调处理的副作用的彩色图像处理方法和装置。 原色彩色图像的色度C由色度检测器检测。 通过发光度检测器检测原始彩色图像的发光度V. 参数选择器根据色度C和发光度V选择色度转换参数，以产生选定的参数。 色度转换器通过色度转换参数a至i执行色度转换。 可以抑制由于执行色度强调处理而导致的小的色度和发光度的部分中的颜色偏差变得明显的副作用。 因此，可以获得高质量的图像数据。
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公开(公告)号：US5539843A
公开(公告)日：1996-07-23
申请号：US832700
申请日：1992-02-07
CPC分类号： H04N1/40075 , G06T3/40 , G06T3/4023 , H04N1/40062 , H04N1/4053
摘要： An image processing system wherein for an inputted composite image composed of a line image and a dither image, both a line image processing and a dither image processing are carried out in parallel, and one of the processed results as selected in accordance with the image region discrimination result. The dither image processing is carried out through data conversion for calculating multivalued gray scale image from the inputted image data, gray scale data conversion for adjusting the gray scale image data so as to match an output device and obtaining such adjusted gray scale image data, and re-binarization for re-binarizing the gray scale image data after subjected to the gray scale conversion. The image region discrimination for discriminating if an image region is of a line image of a dither image is carried out based on a ratio of the number of black or white pixels within the region to the contour line length within the range. In ordered dither image through a screened type dither matrix is discriminated in accordance with a correlation between adjacent pixel trains each having a predetermined number of pixels.
摘要翻译： 一种图像处理系统，其中对于由行图像和抖动图像组成的输入的合成图像，并行地执行行图像处理和抖动图像处理，并且根据图像区域选择的处理结果之一 歧视结果。 通过用于从输入的图像数据计算多值灰度图像的数据转换来执行抖动图像处理，灰度数据转换用于调整灰度图像数据，以匹配输出装置并获得这样调整的灰度图像数据;以及 重新二值化，用于灰度转换后灰度图像数据的二次化。 基于区域内的黑色或白色像素的数量与该范围内的轮廓线长度的比率来执行用于鉴别图像区域是否为抖动图像的线图像的图像区域辨别。 在根据每个具有预定数量的像素的相邻像素列之间的相关性来区分通过屏蔽型抖动矩阵的有序抖动图像。
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公开(公告)号：US5388167A
公开(公告)日：1995-02-07
申请号：US850303
申请日：1992-03-12
申请人： Masashi Koga , Hiroshi Sakou , Masaaki Fujinawa , Hiromichi Fujisawa , Tatsuya Murakami , Yoshihiro Shima , Tsugio Takahashi , Kazunori Kinoshita , Kiyomichi Kurino , Hidefumi Masuzaki
发明人： Masashi Koga , Hiroshi Sakou , Masaaki Fujinawa , Hiromichi Fujisawa , Tatsuya Murakami , Yoshihiro Shima , Tsugio Takahashi , Kazunori Kinoshita , Kiyomichi Kurino , Hidefumi Masuzaki
CPC分类号： H04N1/40093 , G06K9/2054 , G06K2209/01
摘要： A file document image input can have shading removed to produce a deshaded image that is useful for highly efficient compression encoding, to be thereafter stored and transmitted in such efficient encoded form. When the image is retrieved or received, the decoded and deshaded image may have shading returned to it by combining with a shaded template image stored in the template image memory or by synthesizing shading in specified regions. By removing shading from regions, optical character recognition, shading identification or other processing such as smear prevention can be enhanced.
摘要翻译： 文件文档图像输入可以去除阴影以产生对于高效压缩编码有用的去阴影图像，然后以这种有效的编码形式存储和传输。 当图像被检索或接收时，经解码和未映射的图像可以通过与存储在模板图像存储器中的阴影模板图像组合或者通过在指定区域中合成阴影而具有返回到其的阴影。 通过从区域去除阴影，可以提高光学字符识别，阴影识别或其它处理，如防污染。
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公开(公告)号：US5268771A
公开(公告)日：1993-12-07
申请号：US782096
申请日：1991-10-24
CPC分类号： H04N1/40075 , H04N1/40062
摘要： An image processing system which has functions for inputting, storing or receiving, as a binary image data, an image as a document including a photograph having a varying brightness density and of outputting a multi-valued, half-tone image data to a display, a printer or the like, and an image processing method. The system includes a restoration processor. The restoration processor includes a storage for storing therein the binary image data scanningly inputted with use of a window of a predetermined size of m.times.n pixels, a white pixel number detector for detecting the number of white pixels in the binary image data within the window, a plurality of calculators for performing multiplication/accumulations operation over the binary image data within the window and a predetermined coefficient matrix to provide a plurality of multi-valued image data, and a selector for selecting one of the plurality of multi-valued image data found by the plurality of calculators.
摘要翻译： 一种图像处理系统，具有用于作为二进制图像数据输入，存储或接收作为包括具有变化的亮度密度的照片的文档的图像并将多值半色调图像数据输出到显示器的功能， 打印机等，以及图像处理方法。 该系统包括一个恢复处理器。 恢复处理器包括用于存储使用预定大小的m×n个像素的窗口扫描输入的二进制图像数据的存储器，用于检测窗口内的二值图像数据中的白色像素数目的白色像素数检测器， 多个计算器，用于对窗口内的二进制图像数据执行乘法/累加操作，以及预定系数矩阵以提供多个多值图像数据;以及选择器，用于选择由多个多值图像数据中的一个发现的多个多值图像数据 多个计算器。
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