METHOD AND SYSTEM FOR THE REMOTE INSPECTION OF A STRUCTURE

• US 20120140041A1
• Filed: 05/12/2010
• Published: 06/07/2012
• Est. Priority Date: 05/14/2009
• Status: Active Grant

• Current Assignee: Airbus Operations (European Aeronautic Defence and Space Company EADS NV)
• Original Assignee: Airbus Operations (European Aeronautic Defence and Space Company EADS NV)
• Inventors: Rouyre, Francois, Burgunder, Samuel
• Granted Patent: US 9,310,189 B2
• Time in Patent Office: Days
• US Class Current: 348/46
• CPC Class Codes: G01B 11/24 for measuring contours or curvatures
• CPC Class Codes: G01C 11/02 Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
• CPC Class Codes: G01N 21/9515 Objects of complex shape, e.g. examined with use of a surface follower device measuring contours and curvatures G01B11/24
• CPC Class Codes: G06T 2207/30164 Workpiece; Machine component
• CPC Class Codes: G06T 7/001 using an image reference approach

Abstract

The invention relates to a method for the remote inspection of a structure, comprising the following operations:

• • producing a 3D image of an area of the structure to be inspected,
  • superimposing said 3D image with a previously stored digital model of the structure,
  • geographically locating the area of the structure to be inspected on the structure model, and
  • inspecting the area of the structure to be inspected on the 3D image superimposed with the digital model.

The invention also relates to a system for implementing the method, comprising an imaging device (10) that can be installed in the vicinity of the area of the structure to be inspected (2), and an image-processing device (6) located remotely from the imaging device (10) in order to generate a 3D image from the images captured by the camera (11).

Claims

1. A method for the remote inspection of a structure, characterized in that it comprises the following operations:

a) producing a 3D image of an area of the structure to be inspected,

b) superimposing said 3D image with a previously stored digital model of the structure,

c) geographically locating the area of the structure to be inspected on the structure model, and

d) inspecting the area of the structure to be inspected on the 3D image superimposed with the digital model.

2. A method according to claim 1, characterized in that the 3D image is produced by stereo photometry.

3. A method according to claim 2, characterized in that the operation a) of producing a 3D image comprises:

a successive and intermittent lighting of the area of the structure to be inspected, by light sources (12) each placed at a different location,

an image captured at each lighting of the area of the structure to be inspected, and

processing of the obtained images in order to produce the 3D image.

4. A method according to claim 3, characterized in that the operation a) comprises four captured images of the area of the structure to be inspected (image1, image2, image3, and image4), using four different lightings.

5. A method according to any one of claims 1 to 4, characterized in that the geographical location step c) comprises an operation for using remote control to point to a part of the structure area.

6. A method according to any one of claims 1 to 5, characterized in that it comprises a preliminary prelocation of the area to be inspected by detecting and reading data contained in chips, each attached to a part of the structure.

7. A system for implementing the method for remote inspection of a structure according to any one of claims 1 to 6, characterized in that it comprises:

an imaging device (10) that can be installed in the vicinity of the area of the structure to be inspected (2) and comprising multiple light sources (12) arranged around a camera (11), and

an image-processing device (6) connected to the imaging device (10) and capable of generating a 3D image of the area of the structure to be inspected from the images captured by the camera (11), and

a computer (4, 5) far from the structure, said computer or image-processing device being capable of superimposing the 3D image with a digital model of the area of the structure.

8. A system according to claim 7, characterized in that the light sources (12) are comprised of four LEDs arranged at each corner of one side of the imaging device (10).

9. A system according to claim 7 or 8, characterized in that it comprises a computer (4, 5) connected by a wireless connection to the image-processing device (6).

10. A system according to any one of claims 7 to 9, characterized in that the imaging device (10) comprises a remote controlled laser emitting device (14).