System and method for extraction of data from documents for subsequent processing

• US 5,191,525 A
• Filed: 01/16/1990
• Issued: 03/02/1993
• Est. Priority Date: 01/16/1990
• Status: Expired due to Term

• Current Assignee: Digital Image Systems Corporation
• Original Assignee: Digital Image Systems Corporation
• Inventors: LeBrun, Thomas Q., Cage, Kerry, Arnold, Dennis D.
• Primary Examiner(s): Hayes, Gail O.
• Application Number:
  US07/465,411
• Time in Patent Office: 1,141 Days
• Field of Search: 364/419, 385/57, 235/484, 395/148, 395/144
• US Class Current: 715/229
• CPC Class Codes: B07C 3/00 Sorting according to destination collating the pages of a book B42C1/00
• CPC Class Codes: G06F 16/40 of multimedia data, e.g. slideshows comprising image and additional audio data retrieval of still image data G06F16/50; retrieval of audio data G06F16/60; retrieval of video data G06F16/70
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06V 10/987 with the intervention of an operator
• CPC Class Codes: G06V 30/40 Document-oriented image-based pattern recognition
• CPC Class Codes: H04N 1/00204 with a digital computer or a digital computer system, e.g. an internet server programmed control between transmitter and receiver or between image input and image output device H04N1/32561
• CPC Class Codes: H04N 1/32101 Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
• CPC Class Codes: H04N 1/32512 of different type, e.g. internal and external devices
• CPC Class Codes: H04N 1/32529 of different type, e.g. internal and external devices
• CPC Class Codes: H04N 1/32561 using a programmed control device, e.g. a microprocessor
• CPC Class Codes: H04N 2201/0081 Image reader H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0082 Image hardcopy reproducer H04N2201/0091 - H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0086 Image transceiver H04N2201/0093 and H04N2201/0094 take precedence
• CPC Class Codes: H04N 2201/0087 Image storage device
• CPC Class Codes: H04N 2201/3204 of data relating to a user, sender, addressee, machine or electronic recording medium H04N2201/3256 and subgroups take precedence
• CPC Class Codes: H04N 2201/3205 of identification information, e.g. name or ID code H04N2201/3209 takes precedence
• CPC Class Codes: H04N 2201/3212 of data relating to a job, e.g. communication, capture or filing of an image
• CPC Class Codes: H04N 2201/3274 Storage or retrieval of prestored additional information

Abstract

The present invention comprises an image based document processing and information management system and apparatus. It provides a more efficient method and apparatus for handling large volumes of form based business transactions using a digital image-based system for the capture, identification and processing of images, statistics and business data. The system converts documents, such as forms and supporting pages, into digital data which can be used to update computer records and to manage and support the adjudicative processing of business transactions by human operators at computer terminals.

Claims

1. A method of electronically processing data from one or more documents to facilitate user interaction with the data, comprising:

a) generating a plurality of first output signals representing electronic images of said documents, said output signals being generated by feeding a series of documents associated together as a transaction sequentially through an optical scanning device whereby transaction integrity is maintained;

b) generating an electric signal at the beginning and end of the transaction for separating the images of one transaction from those of another;

c) identifying at least one of the documents by reference to identification areas or identification words found on the documents, the identification occurring by reference to geographical location or pel pattern techniques;

d) extracting data fields from at least one of the documents by generating a plurality of second output signals representing said data fields;

e) storing said first and second output signals for subsequent processing; and

f) managing the processing of transactions to support adjudication processes and customer inquiries.

2. A method of electronically processing data to facilitate user interaction with the data, comprising:

(a) feeding documents through an optical scanning device;

(b) recording electronic images of documents;

(c) identifying document formats and transaction boundaries using identification areas or identification words;

(d) extracting data fields from identified document images using automatic character recognition techniques and key correction;

(e) recording electronic data; and

(f) transmitting recorded images and data to digital storage for subsequent processing.

3. The method of claim 2 further comprising the identification of document formats by automatic recognition techniques.

4. The method of claim 2 further comprising the identification of document formats by pel pattern techniques.

5. The method of claim 2 further comprising feeding documents of varying size through said optical scanning device.

6. The method of claim 2 further comprising feeding intermixed documents of varying format through said optical scanning device.

7. The method of claim 2 further comprising feeding documents through said optical scanning device in either a properly justified or inverted orientation.

8. The method of claim 2 further comprising the step of printing item sequence numbers upon said documents as said documents pass through said optical scanning device.

9. The method of claim 2 further comprising the step of correcting for document skew resulting from document misalignment during scanning.

10. The method of claim 2 further comprising extracting data fields from document images using a predictor field to determine whether machine printed or pen printed data resides in the data field.

11. The method of claim 2 further comprising the step of circulating data in a logical error reduction sequence to reduce keying errors.

12. The method of claim 2 further comprising the recording of statistical summaries of data key operator errors for evaluation of operator performance.

13. A method of electronically processing data from documents to electronic images to facilitate user interaction with the data, comprising:

(a) feeding documents through an optical scanning device, said documents proceeding through said optical scanning device in either a properly justified or inverted orientation, said documents being of varying size and different formats;

(b) printing item sequence numbers upon said documents as said documents pass through said optical scanning device;

(c) recording electronic images of documents;

(d) identifying document formats using identification areas or identification words, the identification of document formats occurring by reference to geographic location;

(e) extracting data fields from identified document images using automatic character recognition techniques and key correction;

(f) correcting for document skew resulting from document misalignment during scanning,

(g) recording electronic data; and

(h) transmitting recorded images and data to digital storage for subsequent processing.

14. The method of claim 13 further comprising extracting data fields from document images using a predictor field to determine whether machine or pen printed data resides in the data field.

15. The method of claim 13 further comprising the step of circulating data in a logical error reduction sequence to reduce keying errors.

16. The method of claim 13 further comprising the recording of statistical summaries of data key operator errors for evaluation of operator performance.

17. An optical disc-based transaction processing system for performing business transactions by user interaction with electronically stored data comprising:

(a) a local area network for managing interaction of separate components of said transaction processing system;

(b) an image acquisition subsystem operatively connected to said local area network, said image acquisition subsystem providing digital image data input to said local area network, said image acquisition subsystem coordinating the capture and transfer of electronic images;

(c) a capture management subsystem operatively connected to said local area network, said capture management subsystem functioning to carve data fields from digital document images;

(d) an application subsystem operatively connected to said local area network, said security and control subsystem operating to direct transaction processing events in sequence;

(e) application support workstation for user interaction with said local area network; and

(f) a storage management subsystem for storing electronic digital data, said stored data being available for user interaction.

18. A system for optically capturing, storing, and retrieving data used electronic images, which system comprises:

(a) means for optically scanning intermixed documents of various size and different formats;

(b) means to separate checks from other pages;

(c) means for recording electronic images of documents to facilitate document identification using identification areas or identification words, said means for identification of document formats occurring by automatic recognition techniques;

(d) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction to record electronic data;

(e) means to record electronic data extracted from said data fields;

(f) means for transmitting said recorded electronic data to a host computer;

(g) means for selectively retrieving data as necessary in performing business transactions; and

(h) means for indexing and cross-referencing stored data and electronic images.

19. The apparatus of claim 18 wherein the means for optically scanning documents includes means for feeding documents through said optical scanning means in either properly justified or inverted orientation.

20. The apparatus of claim 18 wherein the means for optically scanning documents further includes means for printing item sequence numbers upon said documents as said documents pass through said optical scanning means.

21. The apparatus of claim 18 wherein the means for optically scanning documents further includes means for correcting document skew resulting from document misalignment during scanning.

22. The apparatus of claim 18 wherein the means from extracting data fields further includes means for circulating or re-routing data in a logical error reduction sequence to reduce keying errors.

23. The apparatus of claim 18 wherein the means for optically scanning documents includes a wand and related switch mechanism associated with the document feeder to permit the definition of a transaction boundary.

24. A combination for optically capturing, storing and retrieving data using electronic images, which system comprises:

(a) means for optically scanning intermixed documents of various size and different formats to maintain transaction integrity in the processing of business transactions;

(b) means to separate checks from other pages;

(c) means for printing item sequence numbers upon said documents at or near the time when said documents pass through said optical scanning device;

(d) recording electronic images of documents;

(e) identifying document formats using identification areas or identification words, the identification of document formats occurring by automatic recognition techniques;

(f) extracting data fields from identified document images using automatic character recognition techniques and key correction;

(g) correcting for document skew resulting from document misalignment during scanning;

(h) recording electronic data; and

(i) transmitting recorded images and data to digital storage for subsequent processing.

25. The combination of claim 24, where there is further included means for sensing the edge of a document, said means for sensing being connected to said means for printing item sequence numbers for causing said means for printing to print the sequence number in the margin of the documents.

26. A method of converting graphics to character data, comprising the steps of:

producing a graphics image of a document;

identifying the graphics image by comparing portions of the image against a series of identifiers for a match;

extracting at least one graphical data area from a selected portion of the graphics image a vector distance from the matched portion;

converting the graphical data area to a character string by processing individual graphical portions of the data area and converting each portion to a character positioned in the string at a location associated with the location of the graphical portion from which it is derived;

displaying the graphical data area along with the character string; and

displaying an unconverted portion of the graphical data area as a universal character intermixed in the character string and located within the character string at a position associated with its location in the graphical data area.

27. The method of claim 26 wherein there is further included the step of keying in a character representative of the unconverted portion of the graphical data and positioning the character within the character string at a position associated with the location of the universal character to replace the universal character.

28. The method of claim 27, wherein there is further included the step of displaying the character string with the keyed character in place of the character string and the intermixed universal character.

29. The method of claim 26, wherein the step of converting each portion of the graphical data area leaves the original graphics image unaltered.

30. The method of claim 26, wherein each character is an ASCII character.

31. The method of claim 26, wherein the universal character is an asterisk.

32. A combination, comprising:

means for sequentially scanning a series of documents associated together as a transaction and producing a sequential series of graphical images of the documents, said means for scanning and producing for supplying a graphical image of each document;

means for generating a signal to identify the end of the transaction; and

means for producing a unique data key responsive to the reception of the signal for locating each sequential series of graphical images representing a transaction.

33. The combination of claim 32, wherein said means for generating a signal is a wand located between each series of documents.

34. The combination of claim 32, wherein said means for generating a signal is a unique document placed first in the series of documents associated as a transaction.

35. The combination of claim 34, wherein said combination includes means for identifying an identification area in the graphical image of the unique document.

36. The combination of claim 35, wherein said means for identifying, generating a signal to signify that the preceding document was the end of the transaction.

37. A method of improving the efficiency of entry of data from pages included in a plurality of transactions into a data processing system, the paper having intermixed document types, the method wherein a transaction comprises one or more pages reducing the amount of labor involved with handing of the documents, the method comprising steps of:

acquiring on a transaction by transaction basis an electronic image of a page in each transaction without pre-sorting pages according to page type; and

automatically comparing with a computer each electronic image to predefined document types for identifying the page type for facilitating subsequent data extraction form the image of the page.

38. The method of claim 37 further comprising the step of maintaining automatically a connection between an image of a page and the transaction of which it is apart.

39. The method of claim 38 further comprising the steps of storing the electronic images and retrieving the electronic images during an image-based work flow management process.

40. The method of claim 37 further comprising the step of deskewing an acquired electronic image to facilitate the step of automatically comparing.

41. The method of claim 37 further comprising the step of extracting automatically data from the images based on identification of its page type.

42. The method of claim 41 further comprising the step of electronically sorting identified electronic images according to type.

43. The method of claim 41 wherein the step of extracting includes the step of extracting from at least a portion of an electronic image data using an automatic character recognition process.

44. The method of claim 41 wherein the step of extracting includes the step manual key entry of data from the image.

45. The method of claim 37 wherein the step of acquiring includes the step of receiving with a facsimile receiving device images of documents related to a single transaction having data to be extracted.

46. The method of claim 37 wherein the step of acquiring includes the step of transporting across a scanner paper documents that have intermixed formats one transaction at a time.

47. The method of claim 46 wherein the step of comparing includes the steps of identifying a preselected page type during the step of capturing, the pages so identified being diverted during transport into a pocket for special processing.

48. The method of claim 37 wherein the step of comparing of the electronic image for identification of document type includes comparing the size of each electronic image for identification.

49. The method of claim 37 wherein the step of comparing includes the step of identifying the page type by automated recognition of a preselected identifying reference area on the document.

50. The method of claim 37 wherein the step of comparing includes the step of identifying the page type using a Pel pattern technique.

51. A method of data extraction from images of pages having multiple numbers of different types of data fields comprising the steps of:

identifying an electronic image of a page as having a known format;

electronically carving form the electronic image a portion thereof based on the identified known format of the page, the image portion being a graphical representation of a data field on the document from which data is to be extracted; and

distributing electronically the carved image portion to means for extracting data from the graphical representation of the data field.

52. The method of claim 51 wherein the means for extracting includes an automated character reader for reading data from the image portion.

53. The method of claim 52 wherein the step of distributing the carved portions includes the step of distributing carved image portions having characters in the graphical data field not capable of being read by the automated character reader to a operator correction means for display to and correction by an operator.

54. The method of claim 51 wherein the means for extracting includes operator key entry means.

55. The method of claim 51 wherein:

the step of electronically carving includes carving from a plurality of electronic images of pages portions thereof, each portion including a graphical representation of a data field from which data is to be extracted;

the step of distributing includes distributing each of the plurality of carved image portions to one of a plurality of means for extracting data.

56. The method of claim 55 wherein the step of distributing includes distributing each of a plurality of carved image portions to one of a plurality of means for extracting data based on the graphical data field'"'"'s type.

57. The method of claim 51 wherein the step of carving includes the step of carving from an electronic image of a document multiple portions thereof, each portion containing graphical representation of a data field from which data is to be extracted.

58. The method of claim 57 wherein the step of distributing includes the step of distributing image portions to a plurality of means for extracting data depending on the graphical data field'"'"'s type.

59. The method of claim 57 wherein the means for extracting includes an automated reader adapted for reading a particular type of graphical data field, and wherein the step of distributing includes the step of distributing graphical data fields of the particular type to the automated reader.

60. The method of claim 59 wherein the means for extracting further includes an operator entry device for extracting data from an electronic image that is not readable by the automated character reader.

61. A method of automated entry of data relating to a transaction into a data processing system from pages having intermixed page types while maintaining transaction integrity and reducing the amount of labor involved with handing of the documents, the method comprising the steps of:

capturing electronic images of pages having intermixed page types on a transaction by transaction basis;

identifying automatically with a computer a page type of at least one of the electronic images of the pages;

carving a portion of the identified electronic image containing a graphical data field based on a known format of the page type; and

distributing carved image portion to means for reading data from the graphical data field.

62. The method of claim 61 wherein the step of distributing includes distributing an image portion to automated character recognition means and to manual entry means depending on the graphical data field being distributed.

63. The method of claim 61 further including the step of distributing an identified electronic image of a page to means for reading data from the electronic image of the entire page.

64. The method of claim 61 wherein the means for reading includes an automated character recognition means and wherein the method further includes the step of distributing a graphical data field containing at least one character not readable by the automated character recognition means to means for correcting data.

65. The method of claim 61 wherein the means for reading includes an automated character recognition means and wherein the method further includes the step of distributing a portion of graphical data field containing at least one character nor readable by the automated character recognition means to means for manually correcting the at least one character, the means for manually correcting displaying a plurality of unrelated image portions in a manner to facilitate a rate of entry of unreadable characters.

66. The method of claim 65 further including the steps of storing the images and of performing image based work flow processing using the stored images.

67. The method of claim 61 further including a step of collecting data read from each page in each transaction for storage in data storage.

68. The method of claim 67 wherein the means for reading includes a plurality of readers;

and wherein the step of distributing includes distributing each of a plurality of graphical data fields to means for reading without regard for the page from which the graphical data fields.

69. The method of claim 67 further including the step performing work flow processing using the collected read data that is retrieved from data storage.

70. The method of claim 61 wherein:

the step of carving includes a step of carving graphical data fields of certain of the electronic images based on predefined formats associated with the page type that locate fields within the image from which data is desired to be extracted; and

the step of distributing includes a step of distributing each carved graphical data fields to one of a plurality of readers based on a field type.

71. A method of manually correcting unreadable characters from an automated character recognition device comprising the steps of:

concurrently displaying a plurality of image portions from at least one electronic page image, each portion having at least one graphical character that cannot be read by the automated character recognition process and that is presented in a predetermined relationship to the other portions, the display and relationship of the plurality of image portions tending to make more efficient the rate of correction of unreadable characters with a manual key entry means; and

providing operator entry means associated with the electronic display for entering characters that are not readable.

72. The method of claim 71 wherein the concurrently displayed image portions are from a plurality of electronic page images.

73. The method of claim 71 further comprising the step of displaying on the display near the image portions any data characters read by the automated character recognition process within the displayed image portion with an indication of any characters in the image portion that were not read.

74. The method of claim 71 further comprising the steps of carving from an electronic page image of a document page portion having a graphical data field containing data to be extracted and presenting the carved graphical data field to an automated character recognition process as a portion of the electronic page image to be read;

and displaying on the manual entry means a predetermined portions of the graphical data field, at least one of which is not readable by the automated character recognition process.

75. The method of claim 71 further comprising a steps of:

carving from an electronic page image a graphical data field containing data to be extracted;

distributing the graphical data field to an automated character recognition process and reading the graphical data field; and

displaying the entire graphical data field for correction with the manual key entry means by keying in the entire data field if at least one of the characters in the graphical data field is not readably the automated character recognition process.

76. An image capture and data extraction system comprising:

an image acquisition system for electronically capturing page images of intermixed types on a transaction by transaction basis while maintaining transaction integrity;

data processing system for identifying a page image as having a known format, carving from an identified page image a portion of the image containing a data field based on its identified format, extracting character data from the carved image of the data field, and assembling extracted data into a data record for the transaction for storage.

77. The image capture and data extraction system of claim 76 wherein the data processing system includes a plurality of computers linked together in a network and includes a capture management subsystem for extracting data from electronic images, storage management subsystem for storing electronic images and an application management subsystem for controlling the flow of electronic images and data between the image acquisition system, the capture management subsystem and the storage management subsystem.

78. The image capture and data extraction system of claim 77 wherein the data processing system further includes data correction and entry work stations.

79. The image capture and data extraction system of claim 77 further including at least one image-based work flow management work station coupled to the storage management subsystem, the image-based work flow management work station retrieving from the storage management subsystem data and images.

80. The image capture and data extraction system of claim 76 further comprising an image-based work flow management system operating on the stored data record.

81. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) mean for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents includes means to separate checks from other pages.

82. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer;

(f) means for selectively retrieving data as necessary in performing business transactions; and

(g) means for indexing and cross-referencing stored data and electronic images.

83. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for recording electronic images of documents includes means for identifying document formats by pel pattern techniques.

84. The apparatus of claim 83 further including a scanner sensor means to detect document edge alignment while printing item sequence numbers.

85. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents further includes means for printing item sequence members upon said documents as said documents pass through said optical scanning means to permit a contiguous document filling and retrieval system.

86. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a hostcomputer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents includes means for correcting document skew resulting from document misalignment during scanning.

87. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for extracting data fields further includes means for producing whether machine printed or pen printed data resides in said data field.

88. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for extracting data fields further includes means for circulating or re-routing data in a logical error reduction sequence to reduce keying errors.

89. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer;

(f) means for selectively retrieving data as necessary in performing business transactions; and

(g) means for recording statistical summaries of data key operator errors for evaluation of operator performance.

90. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents includes a wand and a related switch mechanism associated with the document feeder to permit the definition of a transaction boundary.

91. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents further includes means for separating checks from other documents.

92. A system for optically capturing, storing, and retrieving data using electronic images, which system comprises:

(a) means for optically scanning documents;

(b) means for recording electronic images of documents to facilitate document identification using identification areas or identification words;

(c) means for extracting data fields from said electronic images using automatic character recognition techniques and key correction;

(d) means to record electronic data extracted from said data fields;

(e) means for transmitting said recorded electronic data to a host computer; and

(f) means for selectively retrieving data as necessary in performing business transactions;

wherein the means for optically scanning documents further includes means for maintaining transaction integrity in the processing of said business transactions.