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1. 发明专利

JPH10269322A RECOGNITION PROCESSING METHOD AND DEVICE FOR MULTILEVEL IMAGE PATTERN 失效
公开(公告)号：JPH10269322A
公开(公告)日：1998-10-09
申请号：JP7208297
申请日：1997-03-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SAWAKI MINAKO , HAGITA NORIHIRO , ISHII KENICHIRO
IPC分类号： G06K9/62
摘要： PROBLEM TO BE SOLVED: To correctly recognize a multilevel image pattern such as a design character, thinning, collapse, character background noise and void character mixture. SOLUTION: A multilevel image pattern storing circuit 1 stores the multilevel image of a recognition object, and a normalization processing circuit 2 normalizes the multilevel image pattern. A multi-mask pattern storing circuit 3 stores a multi-mask pattern of each category which is used for recognition decision of the multilevel image pattern. A recognition deciding circuit 4 calculates the similarity between the multilevel image pattern normalized by the circuit 2 and the multi-mask pattern of each category of the circuit 3 by paying attention to the information of mutual pixel values and recognizes the multilevel image pattern. A multi-mask pattern creating circuit 5 creates a multi-mask pattern from recognition and an unlearned multilevel image pattern and performs addition, updation, etc., of the circuit 3.

2. 发明专利

JPH10247219A METHOD AND DEVICE FOR CHARACTER RECOGNITION 失效
公开(公告)号：JPH10247219A
公开(公告)日：1998-09-14
申请号：JP5078697
申请日：1997-03-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SAWAKI MINAKO , HAGITA NORIHIRO , ISHII KENICHIRO
IPC分类号： G06K9/20
摘要： PROBLEM TO BE SOLVED: To realize character recognition whose precision is higher than a conventional method on the noise of thinning and dirt and a character string which is design-processed in a multilevel picture. SOLUTION: For separating a character area and a background area from a character string picture pattern which is design-processed such as a newspaper headline, an integration circuit 2 scans a multilevel picture pattern inputted from a multivalue picture pattern storage circuit 1 in plural directions, counts the product of the density of a prescribed picture element and the adjacent picture element, the product of the density of the prescribed picture element and a value obtained by subtracting the density of the prescribed picture element from a prescribed constant, the product of the value obtained by subtracting the density of the prescribed picture element from the prescribed constant and the density of the adjacent picture element and the product of the value obtained by subtracting the density of the prescribed picture element from the prescribed constant and the value obtained by subtracting the density of the adjacent picture element from the prescribed constant on a scanning line, and extracts a character string area by using the count values.

3. 发明专利

JPH09297818A METHOD AND DEVICE FOR CHARACTER RECOGNITION 失效
公开(公告)号：JPH09297818A
公开(公告)日：1997-11-18
申请号：JP10952996
申请日：1996-04-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORI MINORU , HAGITA NORIHIRO , ODAKA KAZUMI
IPC分类号： G06K9/46 , G06K9/50
摘要： PROBLEM TO BE SOLVED: To recognize a character object, which has large handwriting deformation such as variation in the tilt and connection relation of a character line, well. SOLUTION: A preprocessing part 1 performs a normalizing process as to the character position and size of a binarized character pattern. A feature extraction part 2 scans the character pattern obtained by the preprocessing part 1 at right angles to predetermined coordinate axes, expands a probe in predetermined directions as to white pixels of a background part when the background part is crossed to find the connection length of the while pixels by the directions, and finds the degree of direction contribution of the while pixels from the white pixel connection length. A discrimination part 3 discriminates the character pattern by using the found value of the degree of direction contribution.

4. 发明专利

JPH08202823A PATTERN RECOGNITION DEVICE 失效
公开(公告)号：JPH08202823A
公开(公告)日：1996-08-09
申请号：JP957195
申请日：1995-01-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KIMURA YOSHIMASA , MIYAMOTO NOBUO , SAWAKI MINAKO , HAGITA NORIHIRO
IPC分类号： G06K9/40
摘要： PURPOSE: To provide a pattern recognition device which can stably recognize a pattern against arbitrary thinning/crush/noise and generates/prints a picture information file to which attribute information and the keyword of the pattern is added. CONSTITUTION: The pattern recognition device 4 obtaining information on a style, a font and a size on the character in picture data by executing a recognition processing on picture data is provided with a recognition means 402 segmenting the pattern mentioned in picture data and executing the recognition processing, an index giving means 404 extracting a keyword to a recognition result by the recognition means 402 and giving an index and an attribute information extraction means 405 extracting attribute information attached to the pattern. The recognition means 402 recognizes the input pattern by using similarity by which the picture deterioration of thinning in the input pattern is corrected.

5. 发明专利

JPH0721327A IDENTIFYING/RECOGNIZING PROCESSOR FOR IMAGE PATTERN 失效
公开(公告)号：JPH0721327A
公开(公告)日：1995-01-24
申请号：JP14737593
申请日：1993-06-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAGITA NORIHIRO
IPC分类号： G06K9/68 , G06T7/00
摘要： PURPOSE:To accurately identify a recognizing pattern despite occurrence of the misrecognition by using the integer acquired from an input image pattern and referring to an integer section table and an inter-category overlapping integer table. CONSTITUTION:An identification processing circuit 4 includes an integer producing circuit 5, an identification/recognition deciding circuit 6, a bit position table storing circuit 7, and an integer section table storing circuit 8. Then an image pattern having its normalized position and size is supplied to a binary image pattern, and the image value of each position of an input image is stored in each bit position shown on a bit position table for production of an integer. For instance, this integer is collated with a set standard dictionary for identification or recognition of a specific character or graphic category that is coincident with the input image. Furthermore the information on the binary image pattern that is not used for production of the standard dictionary is added to update the contents of the bit position table and an integer section table and an inter- category overlapping integer table of the standard dictionary respectively.

6. 发明专利

JPS6315383A PATTERN COLLATING DEVICE 失效
公开(公告)号：JPS6315383A
公开(公告)日：1988-01-22
申请号：JP15800986
申请日：1986-07-07
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MATSUO HIROSHI , TSUDA NOBUO , HAGITA NORIHIRO
IPC分类号： G06K9/62 , G06K9/64 , G06T7/00
摘要： PURPOSE:To execute the processing at a high speed by using a category table which has been constituted by classifying in advance a category into groups at every element of a feature vector, and a group selection table, and executing a cumulative calculation of a decided value only with regard to some category names which are selected at every vector element. CONSTITUTION:A group selection table 2 is retrieved by an element value of an input feature vector, a group name of a group having a positive decided value except '0' and its decided value are read out, and subsequently, a category name is read out by retrieving a category table 1 by the group name which has been read out. A decided value cumulation processing means 4 cumulates the decided value onto an evaluated value table 4a in accordance with the category name which is read out by a selection processing means 3, and calculates an evaluated value. In case of a sort processing, in a sort processing means 5, the category name corresponding to the evaluated value given from the decided value cumulation processing means 4 is rearranged in a candidate category table in order from a larger one, and a candidate category extending from the first candidate category whose evaluated value and cumulated value are maximum to a prescribed rank order is outputted.

7. 发明专利

JPS578880A SORTING PROCESSOR OF CHARACTER PATTERN 失效
公开(公告)号：JPS578880A
公开(公告)日：1982-01-18
申请号：JP8352480
申请日：1980-06-20
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAGITA NORIHIRO , MASUDA ISAO
IPC分类号： G06K9/46 , G06K9/48 , G06K9/62
摘要： PURPOSE:To realize a highly efficient sorting of character subjects, by sorting the character patterns based on the degree of directional contribution of the length of the black dot row obtained with every direction from all black picture elements of the character pattern. CONSTITUTION:For the character pattern obtained by a photoelectric conversion or the like, the antennas are extended in eight directions decided previously from at least all black picture elements 8-1-8-3 of a character pattern 7 that received a binary coding, a normalization of position and size, a character framing process and a smoothing. Then the number of consecutive black dots obtained in each direction is calculated to obtain the degree of directional contribution of the black dots. Based on the value of the contribution, the features showing the distribution of length and direction are extracted for each character line of the character pattern to produce a feature table to sort the character patterns. A matching is obtained between the feature table and the feature dictionary table of each character that is already stored. In such way, the character patterns are sorted.

8. 发明专利

JP2003123023A CHARACTER RECOGNITION METHOD, CHARACTER RECOGNITION DEVICE, CHARACTER RECOGNITION PROGRAM AND RECORDING MEDIUM HAVING THE PROGRAM RECORDED THEREON 审中-公开
公开(公告)号：JP2003123023A
公开(公告)日：2003-04-25
申请号：JP2001314804
申请日：2001-10-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NIIMURA TAKAHIKO , TAKEGAWA NAOKI , SHIRAKI YOSHINAO , SAWAKI MINAKO , HAGITA NORIHIRO
IPC分类号： G06K9/38 , G06K9/62
摘要： PROBLEM TO BE SOLVED: To perform binarization in order to give features required for character image recognition and to increase a recognition rate. SOLUTION: A binary image for which a correct answer template is appropriately identified is obtained from gradation images for learning of a binary threshold and an estimation table 12 for which a difference between a threshold at the time and an initial threshold by a conventional method is made into a data base accompanying a gradation distribution is prepared. For the binarization of unknown gradation images in a binarization processing part 2, a density distribution is compared with the density distribution inside the estimation table 12 on a multi-dimensional space in a threshold selection part 11, the one of the shortest Euclidean distance is selected and an optimum threshold is calculated from an accompanying difference value and the initial threshold of the unknown gradation image and supplied. A circumscribing frame detection part 3 segments a character area from the image binarized by the optimum threshold and it is normalized in a size normalization part 4. A similarity degree calculation part 5 calculates similarity degrees among respective templates of a template dictionary 7 and a recognition processing part 6 outputs a character of a category of the template of the highest similarity degree as a recognized result.

9. 发明专利

JP2002319023A IMAGE PATTERN IDENTIFICATION/RECOGNITION METHOD 审中-公开
公开(公告)号：JP2002319023A
公开(公告)日：2002-10-31
申请号：JP2002066019
申请日：2002-03-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HAGITA NORIHIRO
IPC分类号： G06K9/62 , G06T7/00
摘要： PROBLEM TO BE SOLVED: To reduce a burden on user's correction work in false recognition, to easily add a recognition pattern to a dictionary, and to enable identification/ addition of the pattern thereafter. SOLUTION: A binarized image pattern storage circuit 1 stores a character or a figure of a identification/recognition target. A binarized mask pattern storage circuit 3 stores a standard dictionary of a binarized mask pattern of a character or figure category. A normalization processing circuit 2 is inputted with the image pattern of the image pattern storage circuit 1 and normalizes a position or size. An identification/recognition decision circuit 4 collates the normalized image pattern with the binarized mask pattern in each the category to execute the identification, rejection or recognition processing. A binarized mask pattern generation circuit 5 generates a binarized mask pattern from the falsely-recognized or unlearned image pattern and adds or changes contents of the binarized mask pattern storage circuit 3.

10. 发明专利

JP2002222437A DEVICE AND METHOD FOR PERSONIFICATION INTERFACE, PERSONIFICATION INTERFACE PROGRAM, AND RECORDING MEDIUM WITH RECORDED PERSONIFICATION INTERFACE PROGRAM 失效
公开(公告)号：JP2002222437A
公开(公告)日：2002-08-09
申请号：JP2001017754
申请日：2001-01-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MIYAMA ATSUSHI , SAWAKI MINAKO , MURASE HIROSHI , HAGITA NORIHIRO , ONO TAKEHIKO
IPC分类号： G06F3/00 , G06F3/048 , G06T13/40 , G06T15/70
摘要： PROBLEM TO BE SOLVED: To provide a device and a method for personification which can generate delicate differences of the line-of-vision of a character and transmit various information to a user by the line-of-vision. SOLUTION: This device is equipped with a line-of-vision coordinate output parts 11 to 16 which outputs the line-of-vision coordinates of a personified character determinatively or not determinatively corresponding to pieces of target information to be transmitted to the user. A target information input part 2 inputs target information to be transmitted to the user. A line-of-vision coordinate correction part 3 selects one of the output parts 11 to 16 corresponding to the target information according to specific correspondence relation, corrects the line-of-vision coordinates outputted by it according to the current states of the system and user, and determines and outputs the current line-of-vision coordinates of the character. A character video generation part 4 generates and displays character video, which has the line-of-vision in an actual space represented by the current line-of-vision coordinates on a display and then the movement of the line-of-vision is changed to transmit various target information to the user.

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