公开(公告)号：US07715628B2

公开(公告)日：2010-05-11

申请号：US11356449

申请日：2006-02-17

申请人： Sun Jun ,  Yoshinobu Hotta ,  Yutaka Katsuyama ,  Satoshi Naoi

发明人： Sun Jun ,  Yoshinobu Hotta ,  Yutaka Katsuyama ,  Satoshi Naoi

IPC分类号： G06K9/34

CPC分类号： G06K9/346 ,  G06K9/00463 ,  G06K2209/01

摘要： Precise grayscale character segmentation apparatus and method. The precise grayscale character segmentation apparatus comprises an adjustment and segmentation unit for adjusting and segmenting an inputted low resolution text line image undergone coarse segmentation, so as to generate an adjusted character image; a character image binarization unit for generating a binary character image from the character image inputted therein; a noise removal unit for removing noise information in the binary character image generated by the binarization unit; and a final character image segmentation unit for generating a precisely segmented character image from the binary character image from which noise has been removed.

摘要翻译： 精确的灰度字符分割装置和方法。 精确的灰度字符分割装置包括调整和分割单元，用于调整和分割经粗分割的输入低分辨率文本行图像，以便产生经调整的字符图像; 字符图像二值化单元，用于从输入的字符图像生成二进制字符图像; 噪声去除单元，用于去除由二值化单元生成的二进制字符图像中的噪声信息; 以及最终字符图像分割单元，用于从已经去除噪声的二进制字符图像生成精确分割的字符图像。

公开(公告)号：US07095891B1

公开(公告)日：2006-08-22

申请号：US09577340

申请日：2000-05-24

申请人： Hiroaki Takebe ,  Yoshinobu Hotta ,  Satoshi Naoi

发明人： Hiroaki Takebe ,  Yoshinobu Hotta ,  Satoshi Naoi

IPC分类号： G06K9/34

CPC分类号： G06K9/344 ,  G06K2209/01

摘要： A pattern segmentation apparatus and a pattern recognition apparatus can improve the segmentation precision of a character touching pattern. The pattern segmentation apparatus includes a feature amount extraction unit for extracting the feature amount of an image, a feature amount setting unit for setting the feature amount of a category, a feature amount comparison unit for comparing the feature amount of the category with the feature amount of the image, and a segmentation unit for segmenting a portion corresponding to the feature amount of the category from the image based on the comparison result.

摘要翻译： 图案分割装置和图案识别装置可以提高字符触摸图案的分割精度。 图案分割装置包括用于提取图像的特征量的特征量提取单元，用于设置类别的特征量的特征量设置单元，用于将该类别的特征量与特征量进行比较的特征量比较单元 以及分割单元，用于基于比较结果从图像中分割对应于类别的特征量的部分。

公开(公告)号：US06859556B2

公开(公告)日：2005-02-22

申请号：US09309894

申请日：1999-05-11

申请人： Hiroaki Takebe ,  Yoshinobu Hotta ,  Satoshi Naoi

发明人： Hiroaki Takebe ,  Yoshinobu Hotta ,  Satoshi Naoi

IPC分类号： G06K9/48 ,  G06K9/00 ,  G06K9/62 ,  G06K9/64 ,  G06K9/72 ,  G06K9/68

CPC分类号： G06K9/6206 ,  G06K9/00 ,  G06K9/723 ,  G06K2209/01

摘要： A word recognizing apparatus extracts the feature amount from a given image, and dynamically composes the feature amount of a candidate word to be recognized which is registered in a word list, using feature amounts of characters registered in an individual character dictionary. Then, the apparatus collates the composed feature amount of the word with the feature amount extracted from the image, calculates the degree of similarity between the two feature amounts, and outputs a recognition result.

摘要翻译： 字识别装置从给定图像中提取特征量，并使用在单个字符字典中登记的字符的特征量，动态地构成登记在单词列表中的要识别的候选词的特征量。 然后，将该文字的合成特征量与从图像提取的特征量进行比较，计算两个特征量之间的相似度，并输出识别结果。

公开(公告)号：US5907630A

公开(公告)日：1999-05-25

申请号：US697501

申请日：1996-08-26

申请人： Satoshi Naoi ,  Atsuko Asakawa ,  Maki Yabuki ,  Yoshinobu Hotta

发明人： Satoshi Naoi ,  Atsuko Asakawa ,  Maki Yabuki ,  Yoshinobu Hotta

IPC分类号： G06K9/34 ,  G06F9/34 ,  G06K9/20 ,  G06K9/32

CPC分类号： G06K9/32 ,  G06K9/346 ,  G06K2209/01

摘要： An image extraction system includes a connected pattern extracting part for extracting partial patterns respectively having connected pixels from an image which is formed by a block frame having a table format and including one-character frames or a free format frame, characters, graphics or symbols, a one-character frame extracting part for extracting one-character frames from the image based on the partial patterns extracted by the connected pattern extracting part, a straight line extracting part for extracting straight lines from the partial patterns which are extracted by the connected pattern extracting part and is eliminated of the one-character frames by the one-character frame extracting part, a frame detecting part for detecting straight lines forming the frame from the straight lines extracted by the straight line extracting part, and a frame separating part for separating the straight lines detected by the frame detecting part from the partial patterns so as to extract the characters, graphics or symbols.

摘要翻译： 图像提取系统包括连接图案提取部分，用于从由具有表格格式并包括单字符或无格式的帧，字符，图形或符号的块帧形成的图像中提取分别具有连接像素的部分图案， 基于由连接的图案提取部提取的部分图案从图像中提取一个字符的帧的单字符提取部分，用于从通过连接的图案提取提取的部分图案中提取直线的直线提取部分 通过单字符提取部分去除一个字符的帧，用于检测从由直线提取部分提取的直线形成帧的直线的帧检测部分，以及用于分离 由帧检测部分从部分图案检测到的直线以便提取 字符，图形或符号。

公开(公告)号：US5581633A

公开(公告)日：1996-12-03

申请号：US548414

申请日：1995-10-26

申请人： Yoshinobu Hotta ,  Satoshi Naoi

发明人： Yoshinobu Hotta ,  Satoshi Naoi

IPC分类号： G06K9/20 ,  G06K9/34 ,  G06K9/36

CPC分类号： G06K9/348 ,  G06K2209/01

摘要： In a character segmenting apparatus the extracting section extracts the character segment pattern on the basis of the connection data imparted to the segment pattern. The character size calculating section calculates a histogram of a lengthwise or crosswise character size of a circumscribed rectangle circumscribed with the extracted character segment pattern and also calculates an average character size and its variance value on the basis of the histogram of the character size. The character pitch calculating section calculates a histogram of a pitch between the circumscribed rectangles and also calculates an average character pitch and its variance value on the basis of the histogram of the character pitch. The integrating section integrates the character while changing character integrating conditions in accordance with the average character size, the size variance value, the average character pitch and the pitch variance value. The segment integrating section integrates the character by distinguishing the small segment patterns in the character segment pattern on the basis of the average character size.

摘要翻译： 在字符分割装置中，提取部根据赋予片段图案的连接数据提取字符片段图案。 字符尺寸计算部分计算与所提取的字符段模式外接的外接矩形的纵向或横向字符尺寸的直方图，并且还基于字符尺寸的直方图来计算平均字符尺寸及其方差值。 字符间距计算部分计算外接矩形之间的间距的直方图，并且还基于字符间距的直方图来计算平均字符间距及其方差值。 积分部分根据平均字符大小，尺寸方差值，平均字符间距和音调方差值，在改变字符积分条件的同时集成字符。 片段积分部通过基于平均字符大小区分字符片段图案中的小片段图案来整合字符。

公开(公告)号：US09077926B2

公开(公告)日：2015-07-07

申请号：US13490841

申请日：2012-06-07

申请人： Yuan He ,  Jun Sun ,  Hao Yu ,  Satoshi Naoi

发明人： Yuan He ,  Jun Sun ,  Hao Yu ,  Satoshi Naoi

IPC分类号： G06K9/48 ,  H04N1/387

CPC分类号： H04N1/387

摘要： An image processing method includes estimating corners of a contour of an object area in an obtained image, searching for contour lines of the object area between every two points which are offset from the estimated corners within a predetermined degree or distance along a direction away from the object area respectively, and determining intersection points of the contour lines as final corners of the contour of the object area, and determining contour lines between the final corners as a final contour of the object area.

摘要翻译： 一种图像处理方法，包括估计所获得的图像中的对象区域的轮廓的角，在沿着远离所述图像的方向的预定角度或距离内的估计角落偏移的每两个点之间搜索对象区域的轮廓线 并且将轮廓线的交点确定为对象区域的轮廓的最终角，并且确定最终角之间的轮廓线作为对象区域的最终轮廓。

公开(公告)号：US20130022272A1

公开(公告)日：2013-01-24

申请号：US13526938

申请日：2012-06-19

申请人： Jun Sun ,  Satoshi Naoi

发明人： Jun Sun ,  Satoshi Naoi

IPC分类号： G06K9/18

CPC分类号： G06K9/3208 ,  G06F17/275 ,  G06K9/344 ,  G06K2209/01

摘要： The present embodiments disclose a method of and a device for identifying the direction of characters in an image block. The method includes: performing optical character recognition processing on the image block by assuming various directions as assumed character directions, respectively, to obtain sub image blocks, recognized characters corresponding to the sub image blocks and correctness measures thereof in each of the assumed character directions; determining a language group to which the characters in the image block belong; adjusting a correctness measure corresponding to a sub image block which corresponds to a recognized character not belonging to the determined language group in each of the assumed character directions; calculating an accumulative correctness measure in each of the assumed character directions based on the adjusted correctness measure; and identifying the direction of the characters in the image block according to the accumulative correctness measures.

摘要翻译： 本实施例公开了一种用于识别图像块中的字符的方向的方法和装置。 该方法包括：通过假设各个方向作为假定的字符方向，分别对图像块执行光学字符识别处理，以获得子图像块，对应于子图像块的识别字符及其在每个假定字符方向上的正确性度量; 确定图像块中的字符属于的语言组; 在每个假定的字符方向上调整对应于对应于不属于所确定的语言组的识别字符的子图像块的正确性度量; 基于所调整的正确性度量，计算每个假设字符方向中的累积正确性度量; 并根据累积的正确性度量来识别图像块中的字符的方向。

公开(公告)号：US07641475B2

公开(公告)日：2010-01-05

申请号：US11313962

申请日：2005-12-22

申请人： Yutaka Katsuyama ,  Noriaki Ozawa ,  Satoshi Naoi

发明人： Yutaka Katsuyama ,  Noriaki Ozawa ,  Satoshi Naoi

IPC分类号： G09B3/00

CPC分类号： G09B5/067 ,  G09B7/02

摘要： A pointing information extraction unit extracts pointing information indicating a pointing position and a pointing time on a slide from a slide file used in a lecture and a video file of a lecture video using a pointing device. A word information generation unit analyzes a text sentence extracted from the slide file to generate a word information file indicating a word and a position thereof. A word pointing information generation unit estimates a word closest to the pointing position on the slide to generate a word pointing information file with the pointing time assigned. A fill-in-the-blank word extraction unit extracts a word having a pointing time equal to or longer than a predetermined time from the word pointing information as a fill-in-the-blank word file. A fill-in-the-blank test question is generated by setting the fill-in-the-blank word of the slide information as a blank region.

摘要翻译： 指示信息提取单元使用指示装置从用于演讲的幻灯片文件和演讲视频的视频文件中提取指示幻灯片上的指示位置和指向时间的指示信息。 字信息生成单元分析从幻灯片文件提取的文本句子，生成表示单词和位置的单词信息文件。 词指向信息生成单元估计最靠近幻灯片上的指向位置的单词以生成指定时间指定的词指向信息文件。 填写空白字提取单元从作为填充空白字文件的字指向信息中提取具有等于或长于预定时间的指向时间的字。 通过将幻灯片信息的填空字设置为空白区域来生成空白填写测试问题。

公开(公告)号：US07142716B2

公开(公告)日：2006-11-28

申请号：US09949891

申请日：2001-09-12

申请人： Yutaka Katsuyama ,  Satoshi Naoi ,  Fumihito Nishino

发明人： Yutaka Katsuyama ,  Satoshi Naoi ,  Fumihito Nishino

IPC分类号： G06K9/72

CPC分类号： G06K9/03 ,  Y10S707/99933 ,  Y10S707/99936

摘要： A document image search apparatus generates a text by performing the character recognition of a document image and determines a re-process scope. Then, the apparatus generates a candidate character lattice from the re-recognition result of the re-process scope, generates character strings from the candidate character lattice and adds the character strings to the text. Then, the apparatus performs index search using the text with the character strings added.

公开(公告)号：US20060062460A1

公开(公告)日：2006-03-23

申请号：US11199993

申请日：2005-08-10

申请人： Sun Jun ,  Yutaka Katsuyama ,  Satoshi Naoi

发明人： Sun Jun ,  Yutaka Katsuyama ,  Satoshi Naoi

IPC分类号： G06K9/18

CPC分类号： G06K9/325 ,  G06K2209/01

摘要： Character recognition apparatus and method for recognizing characters in an image, of which the character recognition apparatus comprises a text line extraction unit for extracting a plurality of text lines from an input image, a feature recognition unit for recognizing one or more features of each of the text lines, a synthetic pattern generation unit for generating synthetic character images for each of the text lines by using the features recognized by the feature recognition unit and the original character images, a synthetic dictionary generation unit for generating a synthetic dictionary for each of the text lines by using the synthetic character images, and a text line recognition unit for recognizing characters in each of the text lines by using the synthetic dictionary.

摘要翻译： 用于识别图像中的字符的字符识别装置和方法，其中字符识别装置包括用于从输入图像中提取多条文本行的文本行提取单元，用于识别每一个的一个或多个特征的特征识别单元 文本行，合成图案生成单元，用于通过使用由特征识别单元识别的特征和原始字符图像来生成每个文本行的合成人物图像;合成词典生成单元，用于为每个文本生成合成词典 通过使用合成字符图像的行，以及用于通过使用合成字典来识别每个文本行中的字符的文本行识别单元。