Method and apparatus for generating map data based on construction designs

• US 9,646,203 B2
• Filed: 07/18/2014
• Issued: 05/09/2017
• Est. Priority Date: 07/18/2014
• Status: Active Grant

• Current Assignee: HERE Global B.V. (Nokia Corporation)
• Original Assignee: HERE Global B.V. (Nokia Corporation)
• Inventors: Chen, Xin
• Primary Examiner(s): GORADIA, SHEFALI DINESH
• Application Number:
  US14/334,704
• Publication Number:
  US 20160019419A1
• Time in Patent Office: 1,026 Days
• Field of Search: None
• CPC Class Codes: G01C 21/3807 characterised by the type of data
• CPC Class Codes: G01C 21/3833 characterised by the source of data
• CPC Class Codes: G01C 21/3852 Data derived from aerial or satellite images
• CPC Class Codes: G06V 30/422 Technical drawings; Geographical maps

Abstract

A method, apparatus and computer program product are provided for generating map data based on construction designs. In the context of a method, the method includes receiving a construction design, performing optical character recognition to detect characters within the construction design, extracting design features within the construction design, and generating map data based on the detected characters, and the extracted design features.

Claims

1. A method comprising:

receiving a construction design;

performing optical character recognition to detect characters within the construction design;

determining a construction theme based on detected characters;

extracting design features within the construction design, wherein the design features are assigned a probability value based on the construction theme; and

generating, using a processor, map data based on the detected characters, and the extracted design features based on the respective design feature probability value satisfying a predetermined probability threshold.

2. The method of claim 1 further comprising:

binarizing the construction design prior to performing optical character recognition.

3. The method of claim 1 further comprising:

receiving an image associated with the construction design;

extracting image features from the image;

determining deviations between the design features and the image features; and

altering the map data based on the deviations.

4. The method of claim 3, wherein the image is an aerial image.

5. The method of claim 1 further comprising:

receiving position data associated with construction design;

extracting feature positions based on the position data;

determining deviations between the design features and the feature positions; and

altering the map data based on the deviations.

6. The method of claim 1 further comprising:

activate map data based on a construction date.

7. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the processor, cause the apparatus to at least:

receive a construction design;

perform optical character recognition to detect characters within the construction design;

determine a construction theme based on the detected characters;

extract design features within the construction design, wherein the design features are assigned a probability value based on the construction theme; and

generate map data based on the detected characters, and the extracted design features based on the respective design feature probability value satisfying a predetermined probability threshold.

8. The apparatus of claim 7, wherein the at least one memory and the computer program code are further configured to:

binarize the construction design prior to performing optical character recognition.

9. The apparatus of claim 7, wherein the at least one memory and the computer program code are further configured to:

receive an image associated with the construction design;

extract image features from the image;

determine deviations between the design features and the image features; and

alter the map data based on the deviations.

10. The apparatus of claim 7, wherein the image is an aerial image.

11. The apparatus of claim 7, wherein the at least one memory and the computer program code are further configured to:

receive position data associated with construction design;

extract feature positions based on the position data;

determine deviations between the design features and the feature positions; and

alter the map data based on the deviations.

12. The apparatus of claim 7, wherein the at least one memory and the computer program code are further configured to:

activate map data based on a construction date.

13. A computer program product comprising at least one non-transitory computer-readable storage medium having computer-executable program code portions stored therein, the computer-executable program code portions comprising program code instructions configured to:

receive a construction design;

perform optical character recognition to detect characters within the construction design;

determine a construction theme based on the detected characters;

extract design features within the construction design, wherein the design features are assigned a probability value based on the construction theme; and

generate map data based on the detected characters, and the extracted design features based on the respective design feature probability value satisfying a predetermined probability threshold.

14. The computer program product of claim 13, wherein the computer-executable program code portions further comprise program code instructions configured to:

binarize the construction design prior to performing optical character recognition.

15. The computer program product of claim 13, wherein the computer-executable program code portions further comprise program code instructions configured to:

receive an image associated with the construction design;

extract image features from the image;

determine deviations between the design features and the image features; and

alter the map data based on the deviations.

16. The computer program product of claim 13, wherein the computer-executable program code portions further comprise program code instructions configured to:

receive position data associated with construction design;

extract feature positions based on the position data;

determine deviations between the design features and the feature positions; and

alter the map data based on the deviations.

17. The computer program product of claim 13, wherein the computer-executable program code portions further comprise program code instructions configured to:

activate map data based on a construction date.