1、BSI Standards Publicationg12g144g136g145g148g143g131g150g139g145g144g3g150g135g133g138g144g145g142g145g137g155g3g516g3g4g151g150g145g143g131g150g139g133g3g139g134g135g144g150g139g976g139g133g131g150g139g145g144g3and data capture techniques Optical Character Recognition (OCR) quality testingBS ISO/IE
2、C 30116:2016National forewordThis British Standard is the UK implementation of ISO/IEC 30116:2016.The UK participation in its preparation was entrusted to Technical g6g145g143g143g139g150g150g135g135g3g12g22g23g512g885g886g481g3g4g151g150g145g143g131g150g139g133g3g139g134g135g144g150g139g976g139g133
3、g131g150g139g145g144g3g131g144g134g3g134g131g150g131g3g133g131g146g150g151g148g135g3g150g135g133g138g144g139g147g151g135g149g484A list of organizations represented on this committee can be obtained on g148g135g147g151g135g149g150g3g150g145g3g139g150g149g3g149g135g133g148g135g150g131g148g155g484g23g1
4、38g139g149g3g146g151g132g142g139g133g131g150g139g145g144g3g134g145g135g149g3g144g145g150g3g146g151g148g146g145g148g150g3g150g145g3g139g144g133g142g151g134g135g3g131g142g142g3g150g138g135g3g144g135g133g135g149g149g131g148g155g3g146g148g145g152g139g149g139g145g144g149g3of a contract. Users are respons
5、ible for its correct application. The British Standards Institution 2016 g19g151g132g142g139g149g138g135g134g3g132g155g3g5g22g12g3g22g150g131g144g134g131g148g134g149g3g15g139g143g139g150g135g134g3g884g882g883g888ISBN 978 0 580 85339 5ICS 35.040Compliance with a British Standard cannot confer immunit
6、y from legal obligations.g23g138g139g149g3g5g148g139g150g139g149g138g3g22g150g131g144g134g131g148g134g3g153g131g149g3g146g151g132g142g139g149g138g135g134g3g151g144g134g135g148g3g150g138g135g3g131g151g150g138g145g148g139g150g155g3g145g136g3g150g138g135g3g22g150g131g144g134g131g148g134g149g3g19g145g14
7、2g139g133g155g3g131g144g134g3g22g150g148g131g150g135g137g155g3g6g145g143g143g139g150g150g135g135g3g145g144g3g885g882g3g17g145g152g135g143g132g135g148g3g884g882g883g888g484Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO/IEC 30116:2016Information technology Autom
8、atic g139g134g135g144g150g139g976g139g133g131g150g139g145g144g3g131g144g134g3g134g131g150g131g3g133g131g146g150g151g148g135g3techniques Optical Character Recognition (OCR) quality testingTechnologies de linformation Techniques automatiques g134g825g139g134g135g144g150g139g980g139g133g131g150g139g145
9、g144g3g135g150g3g134g135g3g133g131g146g150g151g148g135g3g134g135g149g3g134g145g144g144g177g135g149g3g516g3g8g149g149g131g139g149g3g134g135g3g147g151g131g142g139g150g177g3g134g135g149g3g133g131g148g131g133g150g176g148g135g149g3g146g145g151g148g3g148g135g133g145g144g144g131g139g149g149g131g144g133g135
10、g3g145g146g150g139g147g151g135g12g17g23g8g21g17g4g23g12g18g17g4g15g3STANDARDISO/IEC30116Reference numberISO/IEC 30116:2016(E)First edition2016-10-01 ISO/IEC 2016BS ISO/IEC 30116:2016ii g825g3g12g22g18g512g12g8g6g3g884g882g883g888g3g514g3g4g142g142g3g148g139g137g138g150g149g3g148g135g149g135g148g152g
11、135g134COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in Switzerlandg4g142g142g3g148g139g137g138g150g149g3g148g135g149g135g148g152g135g134g484g3g24g144g142g135g149g149g3g145g150g138g135g148g153g139g149g135g3g149g146g135g133g139g976g139g135g134g481g3g144g145g3g146g131g148g150g3g145g136g3g150g13
12、8g139g149g3g146g151g132g142g139g133g131g150g139g145g144g3g143g131g155g3g132g135g3g148g135g146g148g145g134g151g133g135g134g3g145g148g3g151g150g139g142g139g156g135g134g3g145g150g138g135g148g153g139g149g135g3g139g144g3g131g144g155g3g136g145g148g143g3g145g148g3 g132g155g3 g131g144g155g3 g143g135g131g144
13、g149g481g3 g135g142g135g133g150g148g145g144g139g133g3 g145g148g3 g143g135g133g138g131g144g139g133g131g142g481g3 g139g144g133g142g151g134g139g144g137g3 g146g138g145g150g145g133g145g146g155g139g144g137g481g3 g145g148g3 g146g145g149g150g139g144g137g3 g145g144g3 g150g138g135g3 g139g144g150g135g148g144g1
14、35g150g3 g145g148g3 g131g144g3 g139g144g150g148g131g144g135g150g481g3 g153g139g150g138g145g151g150g3 g146g148g139g145g148g3g153g148g139g150g150g135g144g3g146g135g148g143g139g149g149g139g145g144g484g3g19g135g148g143g139g149g149g139g145g144g3g133g131g144g3g132g135g3g148g135g147g151g135g149g150g135g134
15、g3g136g148g145g143g3g135g139g150g138g135g148g3g12g22g18g3g131g150g3g150g138g135g3g131g134g134g148g135g149g149g3g132g135g142g145g153g3g145g148g3g12g22g18g495g149g3g143g135g143g132g135g148g3g132g145g134g155g3g139g144g3g150g138g135g3g133g145g151g144g150g148g155g3g145g136g3g150g138g135g3g148g135g147g151
16、g135g149g150g135g148g484g12g22g18g3g133g145g146g155g148g139g137g138g150g3g145g136g976g139g133g135Ch. de Blandonnet 8 CP 401g6g11g486g883g884g883g886g3g25g135g148g144g139g135g148g481g3g10g135g144g135g152g131g481g3g22g153g139g150g156g135g148g142g131g144g134Tel. +41 22 749 01 11Fax +41 22 749 09 47g133
17、g145g146g155g148g139g137g138g150g823g139g149g145g484g145g148g137www.iso.orgISO/IEC 30116:2016(E)BS ISO/IEC 30116:2016ISO/IEC 30116:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 1g885g3 g23g135g148g143g149g3g131g144g134g3g134g135g976g139g144g139g150g139g145g144g149 . 14 Abbreviate
18、d terms 25 Quality grading . 36 Measurement methodology for OCR-B 3g888g484g883g3 g18g152g135g148g152g139g135g153g3g145g136g3g143g135g150g138g145g134g145g142g145g137g155 . 36.2 Obtaining the test image . 36.2.1 Measurement conditions 36.2.2 Raw image . 3g888g484g884g484g885g3 g21g135g136g135g148g135
19、g144g133g135g3g137g148g135g155g486g149g133g131g142g135g3g139g143g131g137g135 36.2.4 Binarized image 3g888g484g885g3 g21g135g136g135g148g135g144g133g135g3g148g135g976g142g135g133g150g139g152g139g150g155g3g143g135g131g149g151g148g135g143g135g144g150g149 4g888g484g885g484g883g3 g10g135g144g135g148g131g
20、142g3g148g135g147g151g139g148g135g143g135g144g150g149 4g888g484g885g484g884g3 g15g139g137g138g150g3g149g145g151g148g133g135g149 . 4g888g484g885g484g885g3 g8g136g136g135g133g150g139g152g135g3g148g135g149g145g142g151g150g139g145g144 4g888g484g885g484g886g3 g18g146g150g139g133g131g142g3g137g135g145g143
21、g135g150g148g155 . 46.3.5 Inspection area 8g888g484g886g3 g5g131g149g139g149g3g145g136g3g149g155g143g132g145g142g3g137g148g131g134g139g144g137 86.5 Capture the raw image . 96.6 Image assessment parameters and grading 96.6.1 Determining the document horizontal axis 9g888g484g888g484g884g3 g6g138g131g
22、148g131g133g150g135g148g3g132g135g149g150g486g976g139g150g3g131g142g137g145g148g139g150g138g143 . 96.6.3 Position of a character .11g888g484g888g484g886g3 g6g138g131g148g131g133g150g135g148g3g135g152g131g142g151g131g150g139g145g144g3g152g131g142g151g135g3g523g6g8g25g524g3g139g144g3g150g138g135g3g132
23、g135g149g150g486g976g139g150g3g142g145g133g131g150g139g145g144 .116.6.5 Background noise .126.6.6 Contrast PCS of the characters 127 Reporting the grade .12Annex A g523g144g145g148g143g131g150g139g152g135g524 OCR-B character centreline coordinates .14Annex B g523g144g145g148g143g131g150g139g152g135g
24、524 Threshold determination method .20Annex C g523g144g145g148g143g131g150g139g152g135g524 OCR reference decode algorithm .24Annex D g523g139g144g136g145g148g143g131g150g139g152g135g524 Example calculation of character evaluation value (CEV) .25Bibliography .29g825g3g12g22g18g512g12g8g6g3g884g882g88
25、3g888g3g514g3g4g142g142g3g148g139g137g138g150g149g3g148g135g149g135g148g152g135g134g3 iiiContents PageBS ISO/IEC 30116:2016ISO/IEC 30116:2016(E)ForewordISO (the International Organization for Standardization) and IEC (the International Electrotechnical g6g145g143g143g139g149g149g139g145g144g524g3 g1
26、36g145g148g143g3 g150g138g135g3 g149g146g135g133g139g131g142g139g156g135g134g3 g149g155g149g150g135g143g3 g136g145g148g3 g153g145g148g142g134g153g139g134g135g3 g149g150g131g144g134g131g148g134g139g156g131g150g139g145g144g484g3 g17g131g150g139g145g144g131g142g3 g132g145g134g139g135g149g3 g150g138g131
27、g150g3 g131g148g135g3g143g135g143g132g135g148g149g3 g145g136g3 g12g22g18g3 g145g148g3 g12g8g6g3 g146g131g148g150g139g133g139g146g131g150g135g3 g139g144g3 g150g138g135g3 g134g135g152g135g142g145g146g143g135g144g150g3 g145g136g3 g12g144g150g135g148g144g131g150g139g145g144g131g142g3 g22g150g131g144g134
28、g131g148g134g149g3 g150g138g148g145g151g137g138g3 g150g135g133g138g144g139g133g131g142g3g133g145g143g143g139g150g150g135g135g149g3 g135g149g150g131g132g142g139g149g138g135g134g3 g132g155g3 g150g138g135g3 g148g135g149g146g135g133g150g139g152g135g3 g145g148g137g131g144g139g156g131g150g139g145g144g3 g1
29、50g145g3 g134g135g131g142g3 g153g139g150g138g3 g146g131g148g150g139g133g151g142g131g148g3 g976g139g135g142g134g149g3 g145g136g3 g150g135g133g138g144g139g133g131g142g3g131g133g150g139g152g139g150g155g484g3g12g22g18g3g131g144g134g3g12g8g6g3g150g135g133g138g144g139g133g131g142g3g133g145g143g143g139g150
30、g150g135g135g149g3g133g145g142g142g131g132g145g148g131g150g135g3g139g144g3g976g139g135g142g134g149g3g145g136g3g143g151g150g151g131g142g3g139g144g150g135g148g135g149g150g484g3g18g150g138g135g148g3g139g144g150g135g148g144g131g150g139g145g144g131g142g3g145g148g137g131g144g139g156g131g150g139g145g144g14
31、9g481g3g137g145g152g135g148g144g143g135g144g150g131g142g3g131g144g134g3g144g145g144g486g137g145g152g135g148g144g143g135g144g150g131g142g481g3g139g144g3g142g139g131g139g149g145g144g3g153g139g150g138g3g12g22g18g3g131g144g134g3g12g8g6g481g3g131g142g149g145g3g150g131g141g135g3g146g131g148g150g3g139g144g
32、3g150g138g135g3g153g145g148g141g484g3g12g144g3g150g138g135g3g976g139g135g142g134g3g145g136g3g139g144g136g145g148g143g131g150g139g145g144g3g150g135g133g138g144g145g142g145g137g155g481g3g12g22g18g3g131g144g134g3g12g8g6g3g138g131g152g135g3g135g149g150g131g132g142g139g149g138g135g134g3g131g3g140g145g139
33、g144g150g3g150g135g133g138g144g139g133g131g142g3g133g145g143g143g139g150g150g135g135g481g3ISO/IEC JTC 1.g23g138g135g3 g146g148g145g133g135g134g151g148g135g149g3 g151g149g135g134g3 g150g145g3 g134g135g152g135g142g145g146g3 g150g138g139g149g3 g134g145g133g151g143g135g144g150g3 g131g144g134g3 g150g138g
34、145g149g135g3 g139g144g150g135g144g134g135g134g3 g136g145g148g3 g139g150g149g3 g136g151g148g150g138g135g148g3 g143g131g139g144g150g135g144g131g144g133g135g3 g131g148g135g3g134g135g149g133g148g139g132g135g134g3 g139g144g3 g150g138g135g3 g12g22g18g512g12g8g6g3 g7g139g148g135g133g150g139g152g135g149g48
35、1g3 g19g131g148g150g3 g883g484g3 g12g144g3 g146g131g148g150g139g133g151g142g131g148g3 g150g138g135g3 g134g139g136g136g135g148g135g144g150g3 g131g146g146g148g145g152g131g142g3 g133g148g139g150g135g148g139g131g3 g144g135g135g134g135g134g3 g136g145g148g3g150g138g135g3g134g139g136g136g135g148g135g144g15
36、0g3g150g155g146g135g149g3g145g136g3g134g145g133g151g143g135g144g150g3g149g138g145g151g142g134g3g132g135g3g144g145g150g135g134g484g3g23g138g139g149g3g134g145g133g151g143g135g144g150g3g153g131g149g3g134g148g131g136g150g135g134g3g139g144g3g131g133g133g145g148g134g131g144g133g135g3g153g139g150g138g3g150
37、g138g135g3g135g134g139g150g145g148g139g131g142g3g148g151g142g135g149g3g145g136g3g150g138g135g3g12g22g18g512g12g8g6g3g7g139g148g135g133g150g139g152g135g149g481g3g19g131g148g150g3g884g3g523g149g135g135g3www.iso.org/g134g139g148g135g133g150g139g152g135g149).g4g150g150g135g144g150g139g145g144g3g139g149g
38、3g134g148g131g153g144g3g150g145g3g150g138g135g3g146g145g149g149g139g132g139g142g139g150g155g3g150g138g131g150g3g149g145g143g135g3g145g136g3g150g138g135g3g135g142g135g143g135g144g150g149g3g145g136g3g150g138g139g149g3g134g145g133g151g143g135g144g150g3g143g131g155g3g132g135g3g150g138g135g3g149g151g132g
39、140g135g133g150g3g145g136g3 g146g131g150g135g144g150g3 g148g139g137g138g150g149g484g3 g12g22g18g3 g131g144g134g3 g12g8g6g3 g149g138g131g142g142g3 g144g145g150g3 g132g135g3 g138g135g142g134g3 g148g135g149g146g145g144g149g139g132g142g135g3 g136g145g148g3 g139g134g135g144g150g139g136g155g139g144g137g3
40、g131g144g155g3 g145g148g3 g131g142g142g3 g149g151g133g138g3 g146g131g150g135g144g150g3g148g139g137g138g150g149g484g3g7g135g150g131g139g142g149g3g145g136g3g131g144g155g3g146g131g150g135g144g150g3g148g139g137g138g150g149g3g139g134g135g144g150g139g976g139g135g134g3g134g151g148g139g144g137g3g150g138g135
41、g3g134g135g152g135g142g145g146g143g135g144g150g3g145g136g3g150g138g135g3g134g145g133g151g143g135g144g150g3g153g139g142g142g3g132g135g3g139g144g3g150g138g135g3g12g144g150g148g145g134g151g133g150g139g145g144g3g131g144g134g512g145g148g3g145g144g3g150g138g135g3g12g22g18g3g142g139g149g150g3g145g136g3g146
42、g131g150g135g144g150g3g134g135g133g142g131g148g131g150g139g145g144g149g3g148g135g133g135g139g152g135g134g3g523g149g135g135g3www.iso.org/patents).g4g144g155g3g150g148g131g134g135g3g144g131g143g135g3g151g149g135g134g3g139g144g3g150g138g139g149g3g134g145g133g151g143g135g144g150g3g139g149g3g139g144g136g
43、145g148g143g131g150g139g145g144g3g137g139g152g135g144g3g136g145g148g3g150g138g135g3g133g145g144g152g135g144g139g135g144g133g135g3g145g136g3g151g149g135g148g149g3g131g144g134g3g134g145g135g149g3g144g145g150g3constitute an endorsement.g9g145g148g3 g131g144g3 g135g154g146g142g131g144g131g150g139g145g14
44、4g3 g145g144g3 g150g138g135g3 g143g135g131g144g139g144g137g3 g145g136g3 g12g22g18g3 g149g146g135g133g139g976g139g133g3 g150g135g148g143g149g3 g131g144g134g3 g135g154g146g148g135g149g149g139g145g144g149g3 g148g135g142g131g150g135g134g3 g150g145g3 g133g145g144g136g145g148g143g139g150g155g3assessment,
45、as well as information about ISOs adherence to the World Trade Organization (WTO) g146g148g139g144g133g139g146g142g135g149g3 g139g144g3 g150g138g135g3 g23g135g133g138g144g139g133g131g142g3 g5g131g148g148g139g135g148g149g3 g150g145g3 g23g148g131g134g135g3 g523g23g5g23g524g3 g149g135g135g3 g150g138g13
46、5g3 g136g145g142g142g145g153g139g144g137g3 g24g21g15g483g3 www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/JTC 1, Information technology, Subcommittee SC 31, g4g151g150g145g143g131g150g139g133g3g139g134g135g144g150g139g980g139g133g131g150g139g145g144g3g131g144g134g3g
47、134g131g150g131g3g133g131g146g150g151g148g135g3g150g135g133g138g144g139g147g151g135g149.g139g152 g825g3g12g22g18g512g12g8g6g3g884g882g883g888g3g514g3g4g142g142g3g148g139g137g138g150g149g3g148g135g149g135g148g152g135g134BS ISO/IEC 30116:2016ISO/IEC 30116:2016(E)Introductiong9g145g148g3 g150g138g135g3
48、 g139g144g149g146g135g133g150g139g145g144g3 g145g136g3 g12g7g3 g134g145g133g151g143g135g144g150g149g481g3 g139g484g135g484g3 g16g21g23g7g149g3 g523g16g131g133g138g139g144g135g3 g21g135g131g134g131g132g142g135g3 g23g148g131g152g135g142g3 g7g145g133g151g143g135g144g150g149g524g3 g131g133g133g145g148g1
49、34g139g144g137g3g150g145g3 g12g22g18g512g12g8g6g3 g889g887g882g883g3 g523g131g142g142g3 g146g131g148g150g149g524g512g12g6g4g18g3 g7g145g133g3 g891g885g882g885g3 g523g131g142g142g3 g146g131g148g150g149g524g3 g131g144g134g3 g134g148g139g152g139g144g137g3 g142g139g133g135g144g133g135g149g3 g131g133g133g145g148g134g139g144g137g3 g150g145g3g12g22g18g512g12g8g6g3 g883g890g882g883g885g3 g523g131g142g142g3 g146g131g148g150g149g524g481g3 g131g3 g148g135g142g139g131g132g142g135g3 g131g144g134g3 g135g148g137g145g144g145g143g139g133g3 g134g145g133g151g143g135g144g150g3 g139g144g149g146g135g
