ANSI INCITS 209-1992 Information Systems - Optical Character Recognition (OCR) - Matrix Character Sets for OCR-MB.pdf

1、ANSI INCITS 209-1992 (R2002)(formerly ANSI X3.209-1992 (R1997)for Information Systems Optical CharacterRecognition (OCR) Matrix Character Setsfor OCR-MBANSI x3.209-1 992 American National Standard for Information Systems - Optical Character Recognition (OCR) - Matrix Character Sets for OCR-MB Secret

2、ariat Computer and Business Equipment Manufacturers Association Approved March 6,1992 American National Standards Institute, Inc. Abstract This standard provides the description of the positions and the sizes of dot patterns to be used in the application of matrix printing and recognition for optica

3、l character recognition systems. The two matrix resolutions covered by this standard are 7 x 9 and 9 x 9 (columns x rows). AmericanNationalStandardApproval of an American National Standard requires review by ANSI that therequirements for due process, consensus, and other criteria for approval havebe

4、en met by the standards developer.Consensus is established when, in the judgment of the ANSI Board of StandardsReview, substantial agreement has been reached by directly and materiallyaffected interests. Substantial agreement means much more than a simplemajority, but not necessarily unanimity. Cons

5、ensus requires that all views andobjections be considered, and that a concerted effort be made toward theirresolution.The use of American National Standards is completely voluntary; their existencedoes not in any respect preclude anyone, whether he has approved the standardsor not, from manufacturin

6、g, marketing, purchasing, or using products, processes,or procedures not conforming to the standards.The American National Standards Institute does not develop standards and will inno circumstances give an interpretation of any American National Standard.Moreover, no person shall have the right or a

7、uthority to issue an interpretation ofan American National Standard in the name of the American National StandardsInstitute. Requests for interpretations should be addressed to the secretariat orsponsor whose name appears on the title page of this standard.CAUTION NOTICE: This American National Stan

8、dard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, or withdrawthis standard. Purchasers of American National Standards may receive currentinformation on all standards by calling or wri

9、ting the American National StandardsInstitute.Published byAmerican National Standards Institute11 West 42nd Street, New York, New York 10036Copyright 1992 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic re

10、trieval system or otherwise,without prior written permission of ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaContents Page Foreword v 1 Scope, purpose, and application .l 2 Normative references . 1 3 Definitions .2 4 Characters . 2 Table 1 OCR-MB character repe

11、rtoire . 3 Figures 1 Dot size dimensions . 6 2 7 x 9 matrix dimensions 6 3 9 x 9 matrix dimensions 7 4 Minimum PCS as a function of dot size . .7 5 Number one 9 x 9 . a 6 Number two 9 x 9 . a 7 Number three 9 x 9 .8 8 Number four 9 x 9 .8 9 Number five 9 x 9 .8 10 Number six 9 x 9 . .8 11 Number sev

12、en 9 x 9 . a 12 Number eight 9 x 9 . a 13 Number nine 9 x 9 . .8 14 Preferred number zero 9 x 9 . a 15 Letter A 9 x 9 .8 16 Letter B 9 x 9 .8 17 Letter C 9 x 9 . a 18 Letter D 9 x 9 . a 19 Letter E 9 x 9 .8 20 Letter F 9 x 9 a 21 Letter G 9 x 9 .9 22 Letter H 9 x 9 . 9 23 Letter I9 x 9 .9 24 Letter

13、J 9 x 9 . .9 25 Letter K 9 x 9 .9 26 Letter L 9 x 9 9 Page 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 Letter M 9 x 9 . 9 Letter N 9 x 9 . 9 Letter 0 9 x 9 .9 Letter P 9 x 9 . 9 Letter Q 9 x 9 .9 Letter R 9 x 9 . 9 Letter S 9 x 9 . 9 Lette

14、r T 9 x 9 9 Letter U 9 x 9 .9 Letter V 9 x 9 . 9 Letter W 9 x 9 . 10 Letter X 9 x 9 . 0 Letter Y 9 x 9 . .l 0 Letter 2 9 x 9 . .l 0 Plus sign 9 x 9 lO Period (decimal point) 9 x 9 . .lO Slant 9 x 9 . .10 Dollar sign 9 x 9 .l 0 Greater than sign 9 x 9 .10 Comma 9 x 9 . .10 Yen sign 9 x 9 . .l 0 Less

15、than sign 9 x 9 10 Pound sign 9 x 9 .l 0 Dash 9 x 9 . .10 Number one 7 x 9 .l 1 Number two 7 x 9 . . 1 Number three 7 x 9 .l 1 Number four 7 x 9 .l 1 Number five 7 x 9 .l 1 Number six 7 x 9 1 Number seven 7 x 9 . .1 1 Preferred number eight 7 x 9 .l 1 Number nine 7 x 9 . .ll Number zero 7 x 9 . .l 1

16、 Letter A 7 x 9 . .l 1 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 Page Letter B 7 x 9 . .l 1 Letter C 7 x 9 . 11 Letter D 7 x 9 .l 1 Letter E 7 x 9 . .l 1 Letter F 7 x 9 . .l 1 Letter G 7 x 9 . 12 Letter H 7 x 9 . 12 Letter I 7 x 9 . 12 L

17、etter J 7 x 9 12 Letter K 7 x 9 12 Letter L 7 x 9 12 Letter M 7 x 9 . 12 Letter N 7 x 9 . 12 Letter 0 7 x 9 . 12 Letter P 7 x 9 12 Letter Q 7 x 9 . 12 Letter R 7 x 9 . 12 Letter S 7 x 9 12 Letter T 7 x 9 12 Letter U 7 x 9 .12 Letter V 7 x 9 12 Letter W 7 x 9 .13 Letter X 7 x 9 . .13 Letter Y 7 x 9 1

18、3 Letter Z 7 x 9 13 Plus sign 7 x 9 . .13 Period (decimal point) 7 x 9 . .13 Slant 7 x 9 . .13 Dollar sign 7 x 9 .13 Greater than sign 7 x 9 .13 Comma 7 x 9 13 Yen sign 7 x 9 13 Less than sign 7 x 9 . .13 Pound sign 7 x 9 .13 Dash 7 x 9 13 . . . III -.-l-l-.-I.iLI_YI_U- ,- Page I 97 9 x 9 number two

19、 dot placement limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 98 7 x 9 number two dot placement limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 99 9 x 9 letter A dot placement limits . . . . . . . .

20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 100 7 x 9 letter A dot placement limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Annexes A Correspondence to the ASCII code table . . . . . . . . .

21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 B Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . *. 17 iv Foreword (This foreword is not part of American National Standard X3.209-1 9

22、92.) This standard presents matrix character sets for use in optical character recognition systems. These characters are meant to be similar in shape to those shown in American National Sta.ndard Character Set for Optical Character Recognition (OCR-B), ANSI X3.49-l 975(R1989). However, there are var

23、iations in conformance to OCR-B shapes depending on the matrix resolution of the printed characters. This standard defines the character shapes created by printing devices that generate characters by means of a matrix of dots with a contrasting background. This standard has been writ- ten to reduce

24、printing constraints to a level that will allow lower resolution printers to be usefully applied for OCR applications. Matrix printing is increasingly being used because of the ease of generat- ing characters of this type with the use of digital computers. This need was recognized by the American Na

25、tional Standards institute with the creation of American National Standard for Information Systems - Optical Character Recognition (OCR) - Matrix Character Sets for OCR-MA, ANSI X3.1 1 l- 1986, and by the European Computer Manufacturers Association with the creation of ECMA-51, Implementation of the

26、 Numeric OCR-A Font with 9 x 9 Matrix Printers, and ECMA-42, Alphanumeric Character Set for 7 x 9 Matrix Printers. The need was also recognized by the German Standards Institute with the creation of DIN 66008, Font A for Optical Character Recognition; Character Representation by Dots within 9 x 9 Ma

27、trix Dimensions. As in this standard, the characters were defined by a specific combination of “dots” on a fixed grid. This American National Standard lim- its the printer to a specific placement of dots on a grid, and the print quality requirements that shall be met regardless of the dot matrix use

28、d. The OCR-MB characters can be obtained with the 7 x 9 and the 9 x 9 matrices. The 9 x 9 matrix characters illustrated in figures 5 through 50 are designed to increase printer throughput by imposing the restriction that there are no dots on adjacent horizontal positions. Matrices with resolutions o

29、f higher densities than 9 x 9 are not specifically covered in this standard. However, higher resolution printers can create characters that meet the requirements of this standard. Often, this can be accomplished by using a group of small dots closely spaced to create the same effect as one larger do

30、t. High-resolution matrix printers can also be used to create OCR-B characters that fall within the quality requirements and character shape requirements of American National Standard Character Set for Optical Character Recognition (OCR-B), ANSI X3.49- 1975(R1989). This standard contains annexes, wh

31、ich are informative and are not consid- ered part of this standard. Suggestions for improvement of this standard will be welcome. They should be sent to the Computer and Business Equipment Manufacturers Association, 1250 Eye Street, Suite 200, Washington, DC 20005. V _l_.i_ _- _-_ -_L-_-_-.Jd-_II 1

32、- .?.lj-.) This standard was processed and approved for submittal to ANSI by Accredited Standards Coknmittee on Information Processing Systems, X3. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard,

33、the X3 Committee had the following members: Richard Gibson, Chair Donald C. Loughry, Vice-Chair Joanne Flanagan, Secretary Organization Represented Name of Representative Allen-Bradley Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R

34、onald Reimer Joe Lenner (Ah.) American Library Association . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paul Peters American Nuclear Society . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Geraldine C. M

35、ain Sally Hartzell (Ah.) AMP, Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Edward Kelly Edward Mikoski (Alt.) Apple Computer, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、. . . . . . . . . . . . . . . . . . . . . . . . . . . Karen Higginbottom Association of the Institute for Certification of Computer Professionals (AICCP) . . . . . . . . . . . Kenneth Zemrowski Eugene Dwyer (Alt.) AT pcOlSy;-ri P: J: Traglia R. Ulinski N. R. Weiland The X3Al Working Group 1 on Chara

37、cter Shapes, which had the technical responsibility during the development of this standard, had the following members: P. J. Traglia, Chair R. C. Bloss, Secretary C. E. Biss S. L. Blanc S. Miller D. H. Oddy N. R. Weiland A technical contribution was also made by: J. McDonnell vii -L -_1.21-.- ,/ -8

38、 -La ,_.i AMERICAN NATIONAL STANDARD ANSI X3.209-1 992 American National Standard for Information Systems - Optical Character Recognition (OCR) - Matrix Character Sets for OCR-MB 1 Scope, purpose, and application 1.1 Scope This standard describes the matrix of dot placement and size limits for OCR-M

39、B alphanumeric characters and symbols for opti- cal character recognition (OCR) systems. 1.2 Purpose The purpose of this standard is to establish a set of characters that can be generated by printing systems that produce characters with a matrix of dots and shall be used in optical character recogni

40、tion systems. 1.3 Application This standard specifies the dot placement and size of OCR-MB. The standard does not spec- ify the means to create characters. Both the impact and nonimpact printing technologies can be used to create these characters.This standard may be used as a design basis for devic

41、es used to print or read OCR-MB. In any particular application, the indiscrimi- nate use of more characters than actually required may result in additional cost. The implementation of a successful OCR sys- tem involves consideration beyond the scope of this standard. These considerations include suc

42、h matters as paper, ink characteristics, and character placement. These subjects are discussed in detail in American National Standard for Paper Used in Optical Character Recognition (OCR) Systems, ANSI X3.62- 1 979( R 1989) ; American National Standard for Optical Character Recognition (OCR) Inks,

43、ANSI X3.86-l 980(R1987); American National Standard for Optical Character Recognition (OCR) Character Positioning, ANSI X3.93M- 1981 (R1989); and American National Standard for Information Systems - Optical Character Recognition (OCR) - Guidelines for OCR Print Quality, ANSI X3.99-1983(R1991). 2 Nor

44、mative references The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revi- sion, and parties to agreements based on thi

45、s American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI X3.4-1986, Information systems - Coded character sets - 7 bit American National Standard code for information inter- change (7 bit ASCII) ANSI X3.49-

46、1975(R1989), Character set for optical chaiacter recognition (OCR-B) ANSI X3.93M-1981(R1989), Optical character recognition (OCR) character positioning ANSI X3.99-1983, information systems - Optical character recognition (OCR) - Guidelines for OCR print quality ANSI X3.1 1 l-l 986, information syste

47、ms - Optical character recognition (OCR) matrix character sets for OCR-MA 1 ANSI X3.209-1 992 3 Definitions I 3.1 dot: Generally a circular area of suitable contrast to the background used to form a matrix. 3.2 dot spacing: Nominally the distance between the centers of dots in adjacent row positions

48、 or adjacent column positions. 3.3 matrix: A rectangular array of printed dots organized in rows (horizontal) and columns (vertical). The matrix notation shall be the number of columns by (x) the number of rows. 4 Characters 4.1 Character shapes The character shapes for OCR-MB shall be similar to th

49、ose for OCR-B, as defined in ANSI X3.49, and shall be specified in one size only. This size is similar to size I in OCR-B. The nominal character matrix width, when measured from the centerline of the first column position to the centerline of the last column position shall be 0.055 in (1.40 mm). The nominal character matrix height, when measured from the centerline of the bottom row position to the the centerline of the top row position, shall be 0.094 in (2.39 mm). The stroke width shall be determined by dot size limitations. 4.1.1 Dot size The dot s