EP1013475A2 - Zeichengerät und Ausgabegerät für graphische Daten - Google Patents

Zeichengerät und Ausgabegerät für graphische Daten Download PDF

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Publication number
EP1013475A2
EP1013475A2 EP99125796A EP99125796A EP1013475A2 EP 1013475 A2 EP1013475 A2 EP 1013475A2 EP 99125796 A EP99125796 A EP 99125796A EP 99125796 A EP99125796 A EP 99125796A EP 1013475 A2 EP1013475 A2 EP 1013475A2
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EP
European Patent Office
Prior art keywords
data
stroke
information
character
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99125796A
Other languages
English (en)
French (fr)
Other versions
EP1013475A3 (de
Inventor
Ikeda c/o Riso Kagaku Corporation R&D Hiroyuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Riso Kagaku Corp
Original Assignee
Riso Kagaku Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Riso Kagaku Corp filed Critical Riso Kagaku Corp
Publication of EP1013475A2 publication Critical patent/EP1013475A2/de
Publication of EP1013475A3 publication Critical patent/EP1013475A3/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/022—Draughting machines or drawing devices for keeping parallelism automatic
    • B43L13/026—Draughting machines or drawing devices for keeping parallelism automatic for writing characters or symbols

Definitions

  • This invention relates to a drawing apparatus, and more particularly to a drawing apparatus which is capable of drawing characters like those written by a person with a writing implement.
  • a conventional drawing apparatus which is capable of writing characters like those that a person has actually addressed, for example a postcard, with a writing implement.
  • Japanese Unexamined Patent Publication No. 7(1995)-68993 discloses a calligraphic style generation system, which reads out a stored document and controls drive of a writing brush, based on the calligraphic style information (such as the order of making strokes in a Japanese character, brush pressure, the development of a writing brush and the like) and layout information of each character in the document.
  • the system disclosed in the above-mentioned publication has the disadvantage that it cannot easily perform an operation of adopting or rejecting data from a document database and rearranging data, because the system requires an operation of selecting a desired document from a plurality of documents by a personal computer (PC) or a word processor.
  • PC personal computer
  • an object of the present invention is to provide a drawing apparatus which is capable of drawing characters like those written by a person with a writing implement and easily performing an operation, such as rearrangement, insertion, sampling and the like, when a database is repeatedly used.
  • Another object of the invention is to provide a drawing-data output apparatus that makes the drawing apparatus possible.
  • the "drawing data” means the position information and brush-pressure or drawing pressure information on a sheet, the moving-speed information and angle information of a writing implement, and the like.
  • the "perform drawing” means to move a brush, pen or the like in at least three directions, X-axis direction, Y-axis direction, and Z-axis direction.
  • a data sheet can be used as a database for moving a writing implement (a brush pen, a signature pen or the like whose drawing density or drawing size varies according to drawing pressure and/or drawing speed) in at least three directions, X-axis direction, Y-axis direction, and Z-axis direction.
  • a writing implement a brush pen, a signature pen or the like whose drawing density or drawing size varies according to drawing pressure and/or drawing speed
  • the drawing-data generation means comprises
  • character recognition is first performed on the drawing data and then characters to be drawn are discriminated. Based on the result of discrimination, character data is extracted from the character database.
  • the extracted character data is arranged according to layout information, whereby drawing data is synthesized. Therefore, for handwriting, if information of a user is registered in the character database, the user's own handwriting can be reproduced. Also, if information of a certain person with good handwriting is registered, that person's handwriting can be reproduced.
  • layout if both drawing-position information and drawing-size information of an image read out from a sheet are used, the user's own layout can be reproduced. Note that automatic layout may be performed by storing layout information.
  • the drawing-data generation means may comprise
  • drawing-data generation means may comprise
  • stroke analysis is first performed and then the stroke information (relative position information with respect to a sheet) of an image drawn on the sheet is extracted.
  • the drawing pressure used in drawing the image on the sheet, is estimated from at least either drawing-density information or drawing-size information, or is replaced with reference stroke information. Therefore, a user's own layout can be reproduced and handwriting that is nearly the same as the user's own handwriting can be reproduced.
  • the drawing-data output apparatus of the present invention may further comprise second drawing-data storage means which stores drawing data.
  • the second drawing-data storage means be writable after being partially erased, when drawing data obtained from a newly read sheet is written.
  • a drawing-data output apparatus for outputting drawing data which is supplied to drawing control means which controls drive of drawing drive means which moves in at least three directions to perform drawing by varying a relative positional relationship between a writing implement whose printing density or printing size varies according to drawing pressure and/or drawing speed, held by writing-implement hold means, and paper held by paper hold means
  • the drawing-data output apparatus comprising
  • the drawing-data generation means in the drawing-data output apparatus may comprise
  • drawing-data generation means in the drawing-data output apparatus may comprise
  • drawing-data generation means in the drawing-data output apparatus may comprise
  • the drawing-data generation means in the drawing-data output apparatus may be a multidimensional digitizer which inputs data equivalent to drawing data.
  • drawing-data generation means in the drawing-data output apparatus may comprise
  • the data sheet as a database for moving a writing implement (a brush pen, a signature pen or the like whose drawing density or drawing size varies according to drawing pressure and/or drawing speed) in at least three directions, X-axis direction, Y-axis direction, and Z-axis direction.
  • a writing implement a brush pen, a signature pen or the like whose drawing density or drawing size varies according to drawing pressure and/or drawing speed
  • the drawing-data storage means be writable after being partially erased, when drawing data obtained from a newly read sheet is written.
  • a user's own handwriting and layout can be reproduced.
  • the process from generation of drawing data to drawing is divided into the process of generating drawing data and coding and outputting the drawing data, and the process of performing drawing, based on the codes stored in a sheet along with an image recognizable by a person, and a user purchases only an apparatus which performs the latter process, whereby the same effect is obtainable. Therefore, expense incurred by a user for apparatus purchase can be suppressed.
  • FIG. 1 there is shown a drawing apparatus in accordance with a first embodiment of the present invention.
  • the drawing apparatus includes a paper supply section 1 which places manuscript sheets, a feeder (not shown) which conveys the manuscript sheets placed on the paper supply section 1 one by one, and a paper discharge section 2 which discharges the manuscript conveyed by the feeder.
  • the drawing apparatus further includes (1) a paper hold section 4 (equivalent to paper hold means 13 in Figure. 2A) which holds a sheet of paper 3; (2) a Z-axis slide section 6 (equivalent to writing-implement hold means 12 and drawing drive means 14 in Figure. 2A) which holds a writing implement 5 (such as a writing brush, a pen and the like) whose drawing density or drawing size varies according to drawing pressure and slides (or moves by multiple stages) the writing implement 5 in the Z-axis direction shown in Figure. 1; (3) an X-axis slide section 7 (equivalent to the drawing drive means 14 in Figure. 2A) which slides the Z-axis slide section 6 in the X-axis direction shown in Figure.
  • a paper hold section 4 (equivalent to paper hold means 13 in Figure. 2A) which holds a sheet of paper 3
  • a Z-axis slide section 6 (equivalent to writing-implement hold means 12 and drawing drive means 14 in Figure. 2A) which holds a writing implement 5 (such as
  • the drawing apparatus includes a drawing-data generation circuit (equivalent to drawing-data generation means 10 in Figure. 2A) in the interior thereof.
  • the drawing-data generation circuit generates drawing data that is supplied to a driver (not shown and equivalent to drawing control means 11 in Figure. 2A) which controls drive of the slide sections 6 to 8. Note that the drawing data will be described in detail later.
  • the drawing-data generation means 10 is constituted by image read means 20, character recognition means 21, layout information generation means 22, a character database 23, and data synthesis means 24.
  • the image read means 20 is constituted by a charge-coupled device (CCD) or the like, and reads out an image on the manuscript conveyed from the paper supply section 1 toward the paper discharge section 2 by the feeder and outputs bitmap data.
  • CCD charge-coupled device
  • the character recognition means 21 performs pattern matching between a pattern cut in a character unit from the bitmap data obtained by the image read means 20 and a previously stored character pattern for character recognition, that is, performs character recognition and outputs a corresponding character code.
  • the layout information generation means 22 is provided with an automatic layout function, and generates layout information, based on layout information stored in advance and the character code obtained by the character recognition means 21. Note that the position information and size information of the pattern, cut for character recognition in a character unit, with respect to a manuscript may be extracted and input to the layout information generation means 22. This makes it possible to reproduce the layout of the manuscript.
  • a combination of a character code, position information (hereinafter referred to as absolute position information) X, Y of reference points P1 to P9 (a start point, a plurality of intermediate points on a stroke such as a bent point and the minimum and maximum points of drawing pressure, and an end point), and corresponding drawing-pressure information (equivalent to Z coordinates) Z is stored as character data such as that shown in Figure 3B.
  • the reference points P1 to P9 represent strokes (strokes S1, S2) of a writing implement, such as the one shown in Figure 3A. If information of a user has been registered as this character data in advance, the user's handwriting can be reproduced. In addition, information of a certain person with good handwriting may be registered so that that handwriting can be reproduced. Furthermore, information of a plurality of persons may be registered so that a user can arbitrarily select the plurality of persons' handwriting.
  • the data synthesis means 24 reads out corresponding character data stored in the character database 23, based on a character code for each character obtained by the character recognition means 21.
  • the data synthesis means 24 also converts the character data to drawing data, based on the layout information obtained by the layout information generation means 22. More specifically, as shown in a conceptual diagram of Figure 4, the absolute position information and drawing-pressure information corresponding to this are converted to relative position information with respect to the paper 3 held by the paper hold section 4 (hereinafter referred to as relative position information) and drawing-pressure information corresponding to this.
  • the obtained relative position information and drawing-pressure information are supplied to the drawing control means 11 as drawing data.
  • the user previously prepares a sender data sheet with only senders drawn thereon and an address data sheet with only addresses drawn thereon.
  • the discrimination between the two data sheets by a person and the drawing apparatus can be performed by setting an identification mark in the head portion of each data sheet.
  • the drawing apparatus identifies the sender data sheet from its identification mark, the drawing apparatus erases only a portion of memory corresponding to the sender portion and then stores sender-drawing data. If, on the other hand, the drawing apparatus identifies the address data sheet from its identification mark, the drawing apparatus erases only a portion of memory corresponding to the address portion and then stores address-drawing data and synthesizes the sender-drawing data previously stored and this address-drawing data, thereby generating synthesized drawing data. Using the obtained synthesized drawing data, drawing is performed on paper.
  • FIG. 5 schematically shows the drawing-data generation means 10a of the drawing apparatus according to the second embodiment.
  • This drawing-data generation means 10a is constituted by image read means 30, stroke analysis means 31, drawing-pressure information extraction means 32, and data synthesis means 33.
  • the image read means 30 reads out, in a range of multiple gradation, an image on a manuscript conveyed from the paper supply section 1 toward the paper discharge section 2 by the feeder and outputs bitmap data.
  • a writing implement e.g., a pencil, a fluorescent marker, etc.
  • drawing density varies according to drawing pressure
  • the stroke analysis means 31 performs stroke analysis on the bitmap data obtained by the image read means 30 and outputs the pattern of each stroke and the relative position information of the reference points of the stroke (relative position information with respect to a manuscript) as stroke information.
  • the drawing-pressure information extraction means 32 converts the drawing density at the reference point of each stroke obtained by the image read means 30 and the stroke analysis means 31 to drawing-pressure information, by making reference to a table representing a relationship between drawing density and drawing pressure, stored in advance. Note that when, in 1 stroke, a turnover point, an intersection with another stroke and the like are extracted based on the pattern of each stroke obtained by the stroke analysis means 31, there is a need to estimate the drawing density of a stroke alone in view of the development of a brush and to convert the estimated drawing density to drawing-pressure information.
  • the data synthesis means 33 combines the relative position information of the reference points of each stroke obtained by the stroke analysis means 31 with the drawing-pressure information corresponding to the reference point, obtained by the stroke analysis means 31.
  • the synthesized information is supplied to the drawing control means 11 as drawing data.
  • drawing pressure may also be estimated from the drawing size that is produced by a writing implement whose drawing pressure is reflected in drawing size.
  • the drawing-pressure information extraction means 32 in Figure 5 converts size information extracted from a distance between the center line and the outline of a stroke to drawing-pressure information, by making reference to a previously stored table representing a relationship between drawing size and drawing pressure.
  • both drawing density and drawing size may be used in estimating drawing pressure.
  • drawing pressure at the reference point of a representative stroke may be measured in advance and this pressure may be stored.
  • a description will hereinafter be given of a drawing apparatus according to a third embodiment in which drawing pressure at the reference point of a representative stroke is measured and stored in advance. Note that the exterior construction of the drawing apparatus according to the third embodiment is substantially the same as the one shown in Figure 1.
  • FIG. 7 schematically shows the drawing-data generation means 10b of the drawing apparatus according to the third embodiment.
  • This drawing-data generation means 10b is constituted by image read means 40, stroke analysis means 41, reference-stroke storage means 42, stroke matching means 43, drawing-pressure information extraction means 44, and data synthesis means 45.
  • the image read means 40 reads out an image on a manuscript conveyed from the paper supply section 1 toward the paper discharge section 2 by the feeder, and outputs bitmap data.
  • the stroke analysis means 41 performs stroke analysis on the bitmap pattern obtained by the image read means 30 and outputs the pattern of each stroke and the relative position information of the reference points of the stroke.
  • the reference-stroke storage means 42 stores both the bitmap data of a representative stroke (hereinafter referred to as a reference stroke) and the corresponding code.
  • the stroke matching means 43 performs pattern matching between each stroke obtained by the stroke analysis means 41 and the reference stroke stored in the reference-stroke storage means 42 and outputs a corresponding code.
  • the drawing-pressure information extraction means 44 stores both a code corresponding to each stroke and drawing-pressure information of the reference points of the stroke.
  • the data synthesis means 45 combines the relative position information of the reference points of each stroke obtained by the stroke analysis means 41 with the drawing-pressure information read out from the drawing-pressure information extraction means 44 in accordance with the code obtained by the stroke match means 42 and supplies the combined information to the drawing control means 11 as drawing data.
  • the above-mentioned first through third embodiments perform drawing by supplying the drawing data generated by the drawing-data generation means 10c directly to the drawing control means 11, the generation of the drawing data may differ in place and timing from the drawing operation that employs the generated drawing data.
  • the drawing data generated by each drawing-data generation means 10 of the first through third embodiments may be coded by coding means 51 such as an encoder and the coded data may be output to a paper sheet at the code output means 52 as a bar code, a two-dimensional code or the like. Note that the coded data may be output directly to a paper sheet or may be output to a tacking sheet.
  • processing can be suitably performed as occasion demands.
  • the following method of usage becomes possible.
  • a user sends a manuscript, written by hand or with a personal computer or a word processor, to a predetermined center by mail, an operator will perform an operation of outputting a drawing code with a drawing-code output unit shown in Figure 8, equipped in the center. After this operation, a manuscript with codes stored on the reverse side is sent back from the center to the user.
  • the user purchases only a drawing apparatus shown in Figure 9, then selects and rearranges necessary codes from the manuscript with codes stored thereon, along with characters recognizable by a person, and operates the drawing apparatus.
  • an image previously drawn on a sheet is employed as drawing data and therefore image read means is required for inputting the image.
  • image read means is required for inputting the image.
  • a pen-input digitizer (three-dimensional input is preferable) which is used as a pointing device can be used as a unit for handwritten input,
  • this digitizer is capable of detecting position information and drawing-pressure information that were input, the digitizer alone functions as the drawing-data generation means 10d (see Figure 10).
  • the digitizer because of repetitive use of the database, characters recognizable by a person must be written on a manuscript along with codes, and it is therefore preferable that an image, input with a pen, can also be drawn on paper placed on the digitizer.
  • a two- or more-dimensional digitizer 60 of a pen input type may function as means for assisting image input means and character recognition.
  • character recognition means 61 stores, for example, information such as the strokes of a Japanese character, the order of making strokes in a Japanese character, and the drawing speed.
  • layout information generation means 62, a character database 63, and data synthesis means 64 are substantially the same as those shown in the first embodiment.
  • processing can be suitably performed even by a construction of using a tablet, as occasion demands.
  • a pen-type digitizer equipped at the center it is preferable that the user go to a predetermined center to input an image with a pen-type digitizer equipped at the center.
  • the first through fifth embodiments as described above, characters like those written by a person with a writing implement can be drawn.
  • a sheet with recognizable characters written thereon in the fourth and fifth embodiments, a sheet with code information of drawing data stored therein along with recognizable characters
  • rearrangement, insertion, and sampling operations can be easily performed when the database is repeatedly used. Therefore, the first through fifth embodiments are convenient to use in addressing mail from an office to customers.
  • processing is speeded up compared with the first embodiment, because there is no need to perform character recognition.
  • memory capacity can be reduced, because memory for storing character data and drawing-pressure information is not needed.
  • the operation from generation of drawing data to drawing can be divided into the operation of generating drawing data from a sheet and coding the drawing data and the operation of actually drawing an image based on the code. In this way, all that is required is to purchase only a unit for the latter operation and therefore a user's expense for purchasing the apparatus can be suppressed.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Processing Or Creating Images (AREA)
  • Dot-Matrix Printers And Others (AREA)
EP99125796A 1998-12-25 1999-12-23 Zeichengerät und Ausgabegerät für graphische Daten Withdrawn EP1013475A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP37156798 1998-12-25
JP10371567A JP2000190691A (ja) 1998-12-25 1998-12-25 描画装置及び、描画デ―タ出力装置

Publications (2)

Publication Number Publication Date
EP1013475A2 true EP1013475A2 (de) 2000-06-28
EP1013475A3 EP1013475A3 (de) 2002-11-27

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EP99125796A Withdrawn EP1013475A3 (de) 1998-12-25 1999-12-23 Zeichengerät und Ausgabegerät für graphische Daten

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EP (1) EP1013475A3 (de)
JP (1) JP2000190691A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109262625A (zh) * 2018-10-09 2019-01-25 广东智媒云图科技股份有限公司 一种绘画机械臂及自动笔按压控制方法
CN112074798A (zh) * 2018-05-10 2020-12-11 国际商业机器公司 使用可穿戴式压力传感装置进行书写识别

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6164414B2 (ja) * 2013-08-23 2017-07-19 ブラザー工業株式会社 画像処理装置、および、コンピュータプログラム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0768993A (ja) 1993-09-01 1995-03-14 Nec Corp 毛筆書体作成システム

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US4258369A (en) * 1979-10-09 1981-03-24 Nihon Kohden Kogyo Co., Ltd. Pen recorder for enabling a recording pen to record characters
US4346445A (en) * 1980-03-06 1982-08-24 Koh-I-Noor Rapidograph Portable alphanumeric and symbol drafting device
DE3104962C2 (de) * 1981-02-12 1983-07-21 Held, Kurt, 7218 Trossingen Automatisch arbeitendes Zeichengerät
DE3221980A1 (de) * 1981-07-17 1983-03-10 Saulius Dipl.-Ing. 7148 Remseck Baublys Vorrichtung zum beschriften von werkstuecken
DE3129470C2 (de) * 1981-07-25 1984-08-09 Fa. J.S. Staedtler, 8500 Nürnberg Verfahren und Vorrichtung zum Aufnehmen und Wiedergeben beliebiger Darstellungen mit einer Schreib- oder Zeichenmaschine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0768993A (ja) 1993-09-01 1995-03-14 Nec Corp 毛筆書体作成システム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112074798A (zh) * 2018-05-10 2020-12-11 国际商业机器公司 使用可穿戴式压力传感装置进行书写识别
CN109262625A (zh) * 2018-10-09 2019-01-25 广东智媒云图科技股份有限公司 一种绘画机械臂及自动笔按压控制方法

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EP1013475A3 (de) 2002-11-27
JP2000190691A (ja) 2000-07-11

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