System and method for inexpensive railroad track imaging for inspection

• US 9,036,025 B2
• Filed: 01/11/2012
• Issued: 05/19/2015
• Est. Priority Date: 01/11/2012
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Haas, Norman, Li, Ying, Otto, Charles A., Pankanti, Sharathchandra
• Primary Examiner(s): Vaughn, Jr., William C
• Assistant Examiner(s): ADAMS, EILEEN M
• Application Number:
  US13/348,326
• Publication Number:
  US 20130176435A1
• Time in Patent Office: 1,224 Days
• Field of Search: None
• US Class Current: 348/143
• CPC Class Codes: B61K 9/08 Measuring installations for surveying permanent way applications of measuring apparatus or devices for track building purposes E01B35/00; measuring techniques G01
• CPC Class Codes: B61L 23/044 Broken rails
• CPC Class Codes: B61L 23/045 Rail wear
• CPC Class Codes: B61L 23/047 Track or rail movements
• CPC Class Codes: B61L 23/048 Road bed changes, e.g. road bed erosion
• CPC Class Codes: B61L 27/53 for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
• CPC Class Codes: G01B 11/245 using a plurality of fixed, simultaneously operating transducers G01B11/2408 - G01B11/2425, G01B11/255 take precedence
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 2201/06 Recognition of objects for industrial automation
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

An imaging system includes an image capturing device and a plurality of reflective devices. The image capturing device is configured to receive a plurality of images reflected by the plurality of reflective devices. Responsive to receiving the plurality of images, the image capturing device is further configured to capture within a single frame at least a first image corresponding to a first side of a first railroad track rail, a second image corresponding to a second side of the first railroad track rail, a third image corresponding to a first side of a second railroad track rail, and a fourth image corresponding to a second side of the second railroad track rail.

Claims

1. An imaging system comprising:

a first image capturing device having a field of view; and

a first plurality of reflective devices each configured to reflect an image into the field of view of the first image capturing device while the imaging system is moving along at least one railroad track rail,

wherein a first reflective device in the first plurality of reflective devices is configured to reflect an image of at least a portion of a first side of a first railroad track rail within a first portion of the field-of-view of the first image capturing device,

wherein a second reflective device, separate from the first reflective device, in the first plurality of reflective devices is configured to reflect an image of at least a portion of a second side of the first railroad track rail within a second portion of the first image capturing device'"'"'s field-of-view, and outside of the first portion of the field-of-view of the first image capturing device, and

wherein a third portion of the first image capturing device'"'"'s field-of-view is of at least a portion of a top surface of the first railroad track rail; and

further comprising;

a second image capturing device having a field of view; and

a second plurality of reflective devices each configured to reflect an image into the field of view of the second image capturing device while the imaging system is moving along at least one railroad track rail,

wherein a first reflective device in the second plurality of reflective devices is configured to reflect an image of at least a portion of a first side of a second railroad track rail within a first portion of a field-of-view of the second image capturing device;

wherein a second reflective device in the second plurality of reflective devices is configured to reflect an image of at least a portion of a second side of the second railroad track rail within a second portion of the second image capturing device'"'"'s field-of-view, and outside of the first portion of the field-of-view of the second image capturing device, and

wherein a third portion of the second image capturing device'"'"'s field-of-view is of at least a portion of a top surface of the second railroad track rail.

2. The imaging system of claim 1, wherein the second image capturing device is a camera, and the camera of the second image capturing device contemporaneously captures the first portion, second portion, and third portion, of its field-of-view, and wherein the first image capturing device contemporaneously captures the first portion, second portion, and third portion, of its field-of-view.

3. The imaging system of claim 1, wherein the second plurality of reflective devices comprises a plurality of minors.

4. The imaging system of claim 1, wherein the first image capturing device is a camera, and the camera of the first image capturing device contemporaneously captures the first portion, second portion, and third portion, of its field-of-view.

5. The imaging system of claim 1, wherein the first plurality of reflective devices comprises a plurality of mirrors.

6. An imaging system comprising:

an image capturing device having a field of view;

a first plurality of reflective devices each configured to reflect an image into the field of view of the image capturing device while the imaging system is moving along at least one railroad track rail; and

at least a second plurality of reflective devices each configured to reflect an image into the field of view of the image capturing device while the imaging system is moving along the at least one railroad track rail,

wherein a first reflective device in the first plurality of reflective devices is configured to reflect a first image of at least a portion of a first side of a first railroad track rail to a first reflective device in the second plurality of reflective devices, and wherein the first reflective device in the second plurality of reflective devices is configured to reflect the first image within a first portion of the field-of-view of the image capturing device, and

wherein a second reflective device in the first plurality of reflective devices is configured to reflect a second image of at least a portion of a first side of a second railroad track rail to a second reflective device in the second plurality of reflective devices, and wherein the second reflective device in the second plurality of reflective devices is configured to reflect the second image within a second portion of the field-of-view of the image capturing device; and

further comprising;

a third plurality of reflective devices, wherein a first reflective device in the third plurality of reflective devices is configured to reflect a third image of at least a portion of a second side of the first railroad track rail within a third portion of the field-of-view of the image capturing device, and

wherein a second reflective device in the third plurality of reflective devices is configured to reflect a fourth image of at least a portion of a second side of the second railroad track rail within a fourth portion of the field-of-view of the image capturing device.

7. The imaging system of claim 6, wherein at least a top portion of the first reflective device in the third plurality of reflective devices is situated below and between a top portion of the first reflective device in the second plurality of reflective devices, and wherein at least a top portion of the second reflective device in the second plurality of reflective devices is situated below and between a top portion of the second reflective device in the second plurality of reflective devices.

8. The imaging system of claim 6, wherein at least a top portion of the first reflective device in the third plurality of reflective devices is situated below a top portion of the first reflective device in the first plurality of reflective devices, and wherein at least a top portion of the second reflective device in the second plurality of reflective devices is situated below a top portion of the second reflective device in the first plurality of reflective devices.

9. The imaging system of claim 6, wherein the third plurality of reflective devices comprises a plurality of minors.

10. The imaging system of claim 6, wherein at least a top portion of the first reflective device in the second plurality of reflective devices is situated above a top portion of the first reflective device in the first plurality of reflective devices, and wherein at least a top portion of the second reflective device in the second plurality of reflective devices is situated above a top portion of the second reflective device in the first plurality of reflective devices.

11. The image capturing device of claim 6, wherein the image capturing device is a camera.

12. The imaging system of claim 6, wherein the first plurality of reflective devices and the second plurality of reflective devices comprise a plurality of minors.

13. An imaging system comprising:

a support structure;

an image capturing device having a field of view; and

a plurality of reflective devices each configured to reflect an image into the field of view of the image capturing device while the imaging system is moving along at least one railroad track rail,

wherein the support structure comprises;

a first horizontal member;

a second horizontal member situated opposite to the first horizontal member;

a third horizontal member situated above and parallel to the first horizontal member;

a fourth horizontal member situated above and parallel to the second horizontal member;

a first vertical member coupled and perpendicular to the first and third horizontal members;

at least a second vertical member coupled and perpendicular to the second and fourth horizontal members;

a sixth horizontal member coupled to the first and second vertical members; and

a seventh horizontal member coupled and perpendicular to the second and third horizontal members,

wherein a first reflective device in the plurality of reflective devices is coupled to at least one of the sixth horizontal member and the first vertical member and configured to reflect an image of at least a portion of a first side of a railroad track rail within a first portion of the field of view of the image capturing device,

wherein a second reflective device in the plurality of reflective devices is coupled to at least one of the sixth horizontal member and the second vertical member and configured to reflect an image of at least a portion of a second side of the railroad track rail within a second portion of the field of view of the image capturing device, and outside of the first portion of the field of view of the image capturing device, and

wherein the image capturing device is movably coupled to the seventh horizontal member allowing adjustment of at least one of the location and the orientation of the image capturing device on the seventh horizontal member.

14. The imaging system of claim 13, wherein the first vertical member is movably coupled to the first and third horizontal members, and wherein the second vertical member is movably coupled to the second and fourth horizontal members.

15. The imaging system of claim 13, wherein the sixth horizontal member is movably coupled to the first and second horizontal members.

16. The imaging system of claim 13, wherein the first reflective device and the second reflective device are at least one of pivotably and slidably coupled to the sixth horizontal member.

17. The imaging system of claim 13, wherein the image capturing device is at least one of pivotably and slidably coupled to the seventh horizontal member allowing adjustment of the image capturing device in at least one of:

its orientation, and

its location along the seventh horizontal member of the image capturing device.