Identification of packing units

• US 9,858,505 B2
• Filed: 07/21/2015
• Issued: 01/02/2018
• Est. Priority Date: 03/22/2013
• Status: Active Grant

• Current Assignee: Deutsche Post AG
• Original Assignee: Deutsche Postag
• Inventors: Hartmann, Bernd
• Primary Examiner(s): Vu, Kim
• Assistant Examiner(s): DELANEY, MOLLY K
• Application Number:
  US14/804,971
• Publication Number:
  US 20150324665A1
• Time in Patent Office: 896 Days
• Field of Search: None
• CPC Class Codes: B07C 3/14 using light-responsive detecting means for information carriers G06K7/14
• CPC Class Codes: G06F 40/263 Language identification
• CPC Class Codes: G06F 40/279 Recognition of textual entities
• CPC Class Codes: G06V 30/2445 Alphabet recognition, e.g. Latin, Kanji or Katakana

Abstract

For an identification of packing units, data resulting from an optical recording of at least one surface of a packing unit undergo a text recognition to recognize individual characters. A plurality of characteristic values is determined, each characteristic value being based on another predetermined statistical analysis of the recognized characters. The plurality of characteristic values forms at least one part of an identification of the packing unit. The characteristic values are provided for storage and/or for comparison with previously stored characteristic values.

Claims

1. A method performed by at least one apparatus, the method comprising:

obtaining data resulting from an optical recording of at least one surface of a packing unit;

carrying out a text recognition based on the obtained data for recognizing individual characters;

determining a plurality of characteristic values, wherein each characteristic value is a statistical value that is based on another predetermined statistical analysis of the recognized characters;

providing the characteristic values as at least one part of an identification of the packing unit for comparison with previously stored characteristic values for the packing unit, wherein the result of the comparison is used for tracking the packing unit; and

comparing the determined characteristic values with characteristic values previously determined and stored for packing units to establish differences; and

;

determining in the case of differences falling short of a predetermined threshold that the particular packing unit has been processed before for reasons of tracking and providing an indication that the particular packing unit has now reached a particular location; and

/or

determining in the case of differences falling short of a predetermined first threshold and exceeding a predetermined. second threshold that the particular packing unit has been processed before for reasons of tracking and that text on the particular packing unit has been altered in the meantime, and providing a corresponding indication.

2. The method according to claim 1, wherein at least one of the statistical analyses comprises at least one of the following:

determining a frequency of a particular character;

determining a frequency of a particular combination of characters; and

determining a frequency of a particular character at a particular position.

3. The method according to claim 1, wherein the predetermined statistical analyses of the recognized characters are selected based on at least one of the following probabilities:

a probability of occurrence of a particular character;

a probability of occurrence of a particular combination of characters; and

a probability of occurrence of a particular character at a particular position.

4. The method according to claim 1, wherein different statistical analyses of recognized characters are predetermined for at least one of different languages and different language groups, wherein the predetermined statistical analyses of the recognized characters for a respective language or language group are based on statistical analyses of the language or language group and wherein the plurality of characteristic values are determined based in each case on statistical analyses of the recognized characters which have been predetermined for a language or language group.

5. The method according to claim 4, wherein the language or language group is determined based on at least one of:

a geometric distribution of particular recognized characters;

a presence of a particular character; and

information about the place of origin of the packing unit.

6. The method according to claim 1, further comprising the optical recording of the at least one surface of the packing unit.

7. The method according to claim 1, wherein the optical recoding comprises one of

scanning the at least one surface of the packing unit;

and

photographing the at least one surface of the packing unit.

8. The method according to claim 1, further comprising comparing the determined characteristic values with characteristic values previously determined and stored for packing units by correlating the determined characteristic values with stored characteristic values to establish at least one of a match and differences.

9. An apparatus comprising at least one processor, at least one memory and a program comprising program instructions stored in the memory, the at least one memory and the program being configured, with the at least one processor to cause the apparatus at least to perform the following when the program is executed on the at least one processor:

obtain data resulting from an optical recording of at least one surface of a packing unit;

carry out a text recognition based on the obtained data for recognizing individual characters;

determine a plurality of characteristic values, wherein each characteristic value is a statistical value that is based on another predetermined statistical analysis of the recognized characters;

provide the characteristic values as at least one part of an identification of the packing unit for and comparison with previously stored characteristic values for the packing unit, wherein the result of the comparison is used for tracking the packing unit; and

compare the determined characteristic values with characteristic values previously determined and stored for packing units to establish differences; and

;

determine in the case of differences falling short of a predetermined threshold that the particular packing unit has been processed before for reasons of tracking and providing an indication that the particular packing unit has now reached a particular location; and

/or

determine in the case of differences falling short of a predetermined first threshold and exceeding a predetermined second threshold that the particular packing unit has been processed before for reasons of tracking and that text on the particular packing unit has been altered in the meantime, and providing a corresponding indication.

10. The apparatus according to claim 9, wherein at least one of the statistical analyses comprises at least one of the following:

determining a frequency of a particular character;

determining a frequency of a particular combination of characters; and

determining a frequency of a particular character at a particular position.

11. The apparatus according to claim 9, wherein the predetermined statistical analyses of the recognized characters are selected based on at least one of the following probabilities:

a probability of occurrence of a particular character;

a probability of occurrence of a particular combination of characters; and

a probability of occurrence of a particular character at a particular position.

12. The apparatus according to claim 9, wherein different statistical analyses of recognized characters are predetermined for at least one of different languages and language groups, wherein the predetermined statistical analyses of the recognized characters for a respective language or language group are based on statistical analyses of the language or language group and wherein the plurality of characteristic values are determined based in each case on statistical analyses of the recognized characters which have been predetermined for a language or language group.

13. The apparatus according to claim 12, wherein the at least one memory and the program are further configured, with the at least one processor to cause the apparatus to determine the language or language group based on at least one of:

a geometric distribution of particular recognized characters;

a presence of a particular character; and

information about the place of origin of the packing unit.

14. The apparatus according to claim 9, further configured to perform the optical recording of the at least one surface of the packing unit.

15. The apparatus according to claim 9, further comprising at least one of:

a scanner configured to perform the optical recording by scanning the at least one surface of the packing unit; and

a camera configured to perform the optical recording by photographing the at least one surface of the packing unit.

16. The apparatus according to claim 9, wherein the at least one memory and the program are further configured, with the at least one processor to cause the apparatus to compare the determined characteristic values with characteristic values previously determined and stored for packing units by correlating the determined characteristic values with stored characteristic values to establish at least one of a match and differences.

17. The apparatus according to claim 9 which further comprises at least one of the following components:

an interface for data communication;

a scanner; and

a camera.

18. A system comprising at least one apparatus according to claim 9 and at least one of

at least one scanner for optically recording a surface of packing units;

and

at least one camera for optically recording a surface of packing units.

19. A non-transitory storage medium, in which a program comprising program instructions is stored, wherein the program instructions, when executed by a processor, cause an apparatus to perform the following:

obtain data resulting from an optical recording of at least one surface of a packing unit;

carry out a text recognition based on the obtained data for recognizing individual characters;

determine a plurality of characteristic values, wherein each characteristic value is a statistical value that is based on another predetermined statistical analysis of the recognized characters; and

provide the characteristic values as at least one part of an identification of the packing unit for comparison with previously stored characteristic values for the packing unit, wherein the result of the comparison is used for tracking the packing unit; and

compare the determined characteristic values with characteristic values previously determined and stored for packing units to establish differences; and

;

determine in the case of differences falling short of a predetermined threshold that the particular packing unit has been processed before for reasons of tracking and providing an indication that the particular packing unit has now reached a particular location; and

/or

determine in the case of differences falling short of a predetermined first threshold and exceeding a predetermined second threshold that the particular packing unit has been processed before for reasons of tracking and that text on the particular packing unit has been altered in the meantime, and providing a corresponding indication.