公开(公告)号：US20080069447A1

公开(公告)日：2008-03-20

申请号：US11654180

申请日：2007-01-16

申请人： Yoshinobu Hotta ,  Katsuhito Fujimoto ,  Satoshi Naoi

发明人： Yoshinobu Hotta ,  Katsuhito Fujimoto ,  Satoshi Naoi

IPC分类号： G06K9/18

CPC分类号： G06K9/346 ,  G06K2209/01

摘要： Upon receiving, for example, document data including a character string from outside, a character recognition device detects a line from a line-touching character-string image in which at least one character (such as number, alphabet letter, kana character, and Chinese character) touches (or overlaps) a line in the document data, tentatively removes the line, and estimates a character region. The character recognition device extracts a line-touching character image from the line-touching character-string image (original image) based on the estimated character region. The character recognition device creates a line-added reference character image by adding a quasi-line to a reference character image stored in advance.

摘要翻译： 例如，在从外部接收到包括字符串的文档数据的情况下，字符识别装置从至少一个字符（例如号码，字母，假名字符和中文）的线条触摸字符串图像中检测线 字符）触摸（或重叠）文档数据中的一行，暂时删除该行，并估计字符区域。 字符识别装置基于估计的字符区域从线条触摸字符串图像（原始图像）中提取线条触摸字符图像。 字符识别装置通过向预先存储的参考字符图像添加准行来创建线条添加的参考文字图像。

公开(公告)号：US06970592B2

公开(公告)日：2005-11-29

申请号：US09819728

申请日：2001-03-29

申请人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

IPC分类号： G06T7/00 ,  G06K9/32 ,  G06T5/00 ,  G06K9/00

CPC分类号： G06K9/3283 ,  G06K2209/01 ,  G06T3/0031 ,  G06T5/006 ,  G06T7/12 ,  G06T7/50 ,  G06T2207/10016 ,  G06T2207/30176

摘要： A three-dimensional curved-surface model can be estimated by using both two-dimensional outlines obtained from a piece of image photographed from the top and a restriction that the paper is rectangular. Then, only the three-dimensional distortion in the image can be corrected based on the obtained three-dimensional curved-surface model.

公开(公告)号：US07418126B2

公开(公告)日：2008-08-26

申请号：US10609575

申请日：2003-07-01

申请人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

IPC分类号： G06K9/00 ,  G06K9/36

CPC分类号： H04N1/387 ,  G06T3/0031 ,  H04N1/047 ,  H04N1/195 ,  H04N1/19594 ,  H04N2201/0434 ,  H04N2201/0436 ,  H04N2201/04787

摘要： An image distortion correcting apparatus is provided with an image input section to input an image of a flat rectangular paper surface imaged by an imaging section, as an input image, an imaging position estimating section to estimate a relative imaging position of the imaging section with respect to the paper surface from four vertexes of the rectangular paper surface within the input image, a rectangular paper surface estimating section to estimate four vertexes of the rectangular paper surface within a three-dimensional space based on the imaging position, and an image correcting section to correct a perspective transformation distortion in the paper surface within the input image based on the imaging position and the four vertexes within the three-dimensional space, so as to output an output image.

摘要翻译： 图像失真校正装置设置有图像输入部分，以输入由成像部分成像的平面矩形纸表面的图像作为输入图像，成像位置估计部分，用于估计成像部分的相对成像位置， 在输入图像内从矩形纸表面的四个顶点到纸张表面的矩形纸表面估计部分，基于成像位置来估计三维空间内的矩形纸表面的四个顶点，以及图像校正部分 基于成像位置和三维空间内的四个顶点来校正输入图像内的纸张表面的透视变换失真，以输出输出图像。

公开(公告)号：US20090016608A1

公开(公告)日：2009-01-15

申请号：US12168370

申请日：2008-07-07

申请人： Katsuhito Fujimoto ,  Misako Suwa ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Misako Suwa ,  Satoshi Naoi

IPC分类号： G06K9/00

CPC分类号： G06K9/6205 ,  G06K9/00463

摘要： According to an aspect of an embodiment, a method of character recognition out of an image having a frame and a plurality of characters in an area, comprises the steps of: dividing the area into a plurality of partial areas having a plurality of partial images, respectively; providing a template image having a reference frame image; calculating differences between the partial images and the reference frame image of the template image, respectively; calculating misalignment of the image from the template image based on the average of the differences of the partial images and the reference frame image; and recognizing the characters out of the image upon correction of the misalignment.

摘要翻译： 根据实施例的一个方面，一种在区域中具有帧和多个字符的图像中的字符识别方法包括以下步骤：将该区域划分为具有多个部分图像的多个部分区域， 分别; 提供具有参考帧图像的模板图像; 分别计算模板图像的部分图像和参考帧图像之间的差异; 基于所述部分图像和所述参考帧图像的差的平均值计算所述图像与所述模板图像的未对准; 并且在校正不对准时识别图像中的字符。

公开(公告)号：US07167281B1

公开(公告)日：2007-01-23

申请号：US09669663

申请日：2000-09-26

申请人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

IPC分类号： H04N1/38 ,  H04N1/40 ,  H04N1/00 ,  H04N1/04

CPC分类号： H04N1/403 ,  G06K9/38 ,  G06K2209/01

摘要： It is judged for each pixel in an inputted multilevel image whether the pixel is a background pixel, and the pixel is locally binarized if it is judged not to be a background pixel. Then, it is judged whether the pixel belongs to a background or a stroke, such as of a character, ruled line, etc., and a binary image is generated.

摘要翻译： 判断输入的多值图像中的各像素是否为背景像素，如果判断为不是背景像素，则对像素进行局部二值化处理。 然后，判断像素是否属于诸如字符，划线等的背景或笔画，并且生成二进制图像。

公开(公告)号：US07146047B2

公开(公告)日：2006-12-05

申请号：US09956933

申请日：2001-09-21

申请人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

IPC分类号： G06K9/46

CPC分类号： G06K9/346 ,  G06K2209/01

摘要： An information processing apparatus extracts a plurality of strokes from a multilevel image, and generates a stroke binary image. Next, the image processing apparatus extracts feature amounts indicating the thickness and the smoothed graylevel of a stroke in a neighboring region of a target pixel by using each pixel belonging to each of the strokes as the target pixel. Then, the apparatus generates a target stroke binary image from the stroke binary image based on the distribution of the extracted feature amounts.

摘要翻译： 信息处理装置从多级图像提取多个笔画，并生成笔画二进制图像。 接下来，图像处理装置通过使用属于每个笔画的每个像素作为目标像素，提取指示目标像素的相邻区域中的笔画的厚度和平滑灰度的特征量。 然后，该装置基于提取的特征量的分布从笔划二进制图像生成目标笔划二进制图像。

公开(公告)号：US20060078204A1

公开(公告)日：2006-04-13

申请号：US09956933

申请日：2001-09-21

申请人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

发明人： Katsuhito Fujimoto ,  Atsuko Ohara ,  Satoshi Naoi

IPC分类号： G06K9/46

CPC分类号： G06K9/346 ,  G06K2209/01

摘要： An information processing apparatus extracts a plurality of strokes from a multilevel image, and generates a stroke binary image. Next, the image processing apparatus extracts feature amounts indicating the thickness and the smoothed graylevel of a stroke in a neighboring region of a target pixel by using each pixel belonging to each of the strokes as the target pixel. Then, the apparatus generates a target stroke binary image from the stroke binary image based on the distribution of the extracted feature amounts.

公开(公告)号：US07796817B2

公开(公告)日：2010-09-14

申请号：US11654180

申请日：2007-01-16

申请人： Yoshinobu Hotta ,  Katsuhito Fujimoto ,  Satoshi Naoi

发明人： Yoshinobu Hotta ,  Katsuhito Fujimoto ,  Satoshi Naoi

IPC分类号： G06K9/00 ,  G06K9/18

CPC分类号： G06K9/346 ,  G06K2209/01

摘要： Upon receiving, for example, document data including a character string from outside, a character recognition device detects a line from a line-touching character-string image in which at least one character (such as number, alphabet letter, kana character, and Chinese character) touches (or overlaps) a line in the document data, tentatively removes the line, and estimates a character region. The character recognition device extracts a line-touching character image from the line-touching character-string image (original image) based on the estimated character region. The character recognition device creates a line-added reference character image by adding a quasi-line to a reference character image stored in advance.

摘要翻译： 例如，在从外部接收到包括字符串的文档数据的情况下，字符识别装置从至少一个字符（例如号码，字母，假名字符和中文）的线条触摸字符串图像中检测线 字符）触摸（或重叠）文档数据中的一行，暂时删除该行，并估计字符区域。 字符识别装置基于估计的字符区域从线条触摸字符串图像（原始图像）中提取线条触摸字符图像。 字符识别装置通过向预先存储的参考字符图像添加准行来创建线条添加的参考文字图像。

公开(公告)号：US07440618B2

公开(公告)日：2008-10-21

申请号：US10941863

申请日：2004-09-16

申请人： Atsuko Ohara ,  Katsuhito Fujimoto ,  Satoshi Naoi

发明人： Atsuko Ohara ,  Katsuhito Fujimoto ,  Satoshi Naoi

IPC分类号： G06K9/46 ,  G06K9/48

CPC分类号： G06K9/346 ,  G06K2209/01 ,  G06T7/11 ,  G06T7/12 ,  G06T2207/10008 ,  G06T2207/30176

摘要： A rather expanded binary image and a rather blurry binary image are generated from a multiple-valued image. A ruled line candidate area is extracted from the rather expanded binary image, and the extracted ruled line candidate area is verified using the rather blurry binary image.

摘要翻译： 从多值图像生成相当扩展的二进制图像和相当模糊的二进制图像。 从相当扩展的二进制图像中提取格线候补区域，并且使用相当模糊的二进制图像来验证提取的划线候补区域。

公开(公告)号：US07280693B2

公开(公告)日：2007-10-09

申请号：US10602624

申请日：2003-06-25

申请人： Koji Kurokawa ,  Katsuhito Fujimoto ,  Misako Suwa ,  Yoshinobu Hotta ,  Satoshi Naoi

发明人： Koji Kurokawa ,  Katsuhito Fujimoto ,  Misako Suwa ,  Yoshinobu Hotta ,  Satoshi Naoi

IPC分类号： G06K9/00

CPC分类号： G06F3/0486 ,  G06K9/2054 ,  G06K2209/01

摘要： A document information input apparatus detects a position and an attribute of an area of a real document to be input designated by a user with high accuracy. Based on the detected position and attribute, the document information input apparatus recognizes an image of the area as text information by performing recognition processes suitable for the detected attribute such as character recognition, table recognition and a figure process. Then, the document information input apparatus pastes the resulting information to a pertinent position of an electronic document on a display. As a result, it is possible to input information such as a character sequence, a table and a figure from a real document to an electronic document at high speed and with high accuracy.

摘要翻译： 文件信息输入装置以高精度检测要由用户指定的真实文件的区域的位置和属性。 基于检测到的位置和属性，文档信息输入装置通过执行诸如字符识别，表识别和图形处理的检测属性的识别处理，将该区域的图像识别为文本信息。 然后，文件信息输入装置将所得到的信息粘贴到显示器上的电子文档的相关位置。 结果，可以高速且高精度地将诸如字符序列，表格和图形的信息从真实文档输入到电子文档。