System for geological defect detection utilizing composite video-infrared thermography

• US 4,910,593 A
• Filed: 04/14/1989
• Issued: 03/20/1990
• Est. Priority Date: 04/14/1989
• Status: Expired due to Term

• Current Assignee: Entech Engineering Inc.
• Original Assignee: Entech Engineering Inc.
• Inventors: Weil, Gary J.
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US07/339,070
• Time in Patent Office: 340 Days
• Field of Search: 358/93, 358/103, 358/106, 358/107, 358/113, 73/154, 382/1, 360/5, 360/14.1, 356/369
• US Class Current: 348/164
• CPC Class Codes: G01V 9/005 by thermal methods, e.g. after generation of heat by chemical reactions

Abstract

A selectively mobile system with an infrared scanner and video camera having a common area of focus and apparatus for detecting location permits detection of subterranean geological anomalies. Infrared and visual images are simultaneously successively recorded on videotape together with related location data and other relevant information. Video recorded infrared, video and location data are selectively captured on successive frames. Such frames are recorded for further analysis.

Claims

1. A selectively mobile system for infrared thermographic and visual scanning and comparative analysis for evaluating geological areas for subterranean anomalies comprising:

an infrared scanner for scanning a geological area;

a video camera for scanning such a geological area;

mobile carrying means upon which said infrared scanner and said video camera are fixable for movement relative to such geological area while scanning;

location indicator means; and

image and location data processing and preservation means;

said infrared scanner and said video camera being alignable to provide overlapping fields of view having a common area of focus;

said location indicator means comprising means for providing location data uniquely representative of locations of such geological area within the common area of focus;

said image and location data processing and preservation means comprising means for continuously capturing infrared and video images add location data within the common area of focus;

for superposing the infrared image, video image and location data on single composite video frames, for successively video recording such composite video data frames for further use; and

for simultaneously selectively monitoring the infrared and video images and location data for visual verification of such video data frames.

2. A system as in claim 1 and further comprising a profilometer for provision of geological area surface roughness information for integration with other data collected by said system.

3. A system as in claim 1 and further comprising a video monitor for viewing composite data frames provided by the video processing means.

4. A system as in claim 1 and further comprising a video monitor for independent viewing of video images provided by the video camera.

5. A system as in claim 1 and further comprising a monitor for independently viewing the infrared images provided by the infrared scanner.

6. A system as in claim 1 and further comprising keyboard means for selective operator provision of information relevant to said scanning for superposition by the data processing and preservation means on the video frame segments.

7. A system as in claim 1 and further comprising color video copy processor means for provision of hard copy of such video data frame segments.

8. A system as in claim 1 and further comprising laser means by which to provide a common point of focus for said aligned infrared scanner and video camera overlapping fields of view and further by which to guide a driver of said selectively mobile system.

9. A system as in claim 1, wherein said location indicator means comprises distance input means for provision of distance signals for further processing by said data processing means.

10. A system as in claim 9, wherein said distance input means comprises odometer means responsive to movement of said mobile carrying means for providing pulse-form distance signals and distance processor means for converting such distance signals to digital form.

11. A system as in claim 1, wherein said mobile carrying means comprises a selectively mobile vehicle having mounting means upon which said infrared scanner and said video camera are adjustably affixed.

12. A system as in claim 11 wherein said mounting means comprises telescoping boom means upon which said infrared scanner and said video camera are movably secured for vertical and horizontal positioning.

13. A system as in claim 12 and further comprising remote control means for remotely controlling vertical and horizontal positioning of said video camera and said infrared scanner.

14. A system according to claim 1 wherein the data processing and preservation comprises at least one video recorder;

and video processing means for processing the infrared and video images and location data to provide a composite video output of the superposed infrared image, video image and location data to the video recorder for recording.

15. A system according to claim 14 and further comprising means for causing the infrared images to have a color spectrum indicative of preselected temperatures for video recorder capture of such colors.

16. A system as in claim 14 and further comprising a videotape recorder of the multi-channel type for simultaneous recording on separate channels of information relevant to such geological scanning.

17. A system as in claim 14 and further comprising a video editor by which such video recorded infrared and visual data may be edited;

and an edit-output recorder for storage of such edited video recordings.

18. A system as in claim 14 and further comprising videotape recording means for audio recording of information simultaneously with the videotape recording.

19. A system as in claim 14 and further comprising automated marking means;

whereby to impose indicia upon selected geological sites during the course of the scan of such sites.

20. A system according to claim 14 wherein the video processing means provides successive video frames for storage by a video recorder.

21. A system according to claim 20 wherein each video frame includes a plurality of discrete segments;

one of such segments carrying a captured infrared image of such scanned geological area and another of the segments carrying a captured video image of such scanned geological area.

22. A system according to claim 21 wherein each video frame includes a further segment carrying the location data.

23. A system according to claim 22 wherein each video frame includes at least one further segment for carrying additional information relative to said scanning.

24. A system as in claim 23 comprising at least one further infrared scanner, for scanning adjacent fields of view of such geological area;

one of the video frame segments carrying an infrared image captured by said further infrared scanner.

25. A system according to claim 23 wherein each video frame includes a total of four such segments.

26. A system according to claim 25 and comprising at least one further video camera for visual scanning while evaluating such geographical area, one of the video frame segments carrying a video image captured by said further video camera.

27. A system as in claim 26 further comprising one of said cameras being so located and focused as to reveal a field of view analogous to the view seen by a driver of said selectively mobile system.

28. A system as in claim 9 wherein one of said cameras is so located and focused as to reveal a field of view differing from that of said aligned video camera and infrared scanner, for additional detection of information relevant to such geological scanning.

29. A selectively mobile system for infrared thermographic and visual scanning and comparative analysis for evaluating geological areas comprising:

an infrared scanner for scanning a selected area;

a video camera for scanning such area;

mobile carrying means upon which said infrared scanner and said video camera are fixable for movement relative to such area while scanning;

location means; and

image and location data processing and preservation means for continuously capturing infrared and video images and location data, for superposing the infrared image, video image and location data on single composite video frames, and for successively video recording such composite video data frames for further use.

30. A system according to claim 29 wherein said data processing and preservation means includes means for simultaneously selectively monitoring the infrared and video images and location data for visual verification of such video data frames.

31. A system according to claim 29 wherein said infrared scanner and said video camera are alignable to provide overlapping fields of vie having a common area of focus.

32. A system according to claim 29 wherein the data processing and preservation comprises at least one video recorder;

and video processing means for processing the infrared and video images and location data to provide a composite video output of the superposed infrared image, video image and location data to the video recorder for recording.

34. A system according to claim 29 wherein each video frame includes a further segment carrying the location data.

35. A system according to claim 29 wherein each video frame includes at least one further segment for carrying additional information relative to said scanning.

36. A system according to claim 29 wherein each video frame includes a total of four such segments.

37. A system according to claim 29 and further comprising operator input means for selectively providing information relevant to such scanning for superposition by the data processing and preservation means on the video frame segments.

33. A system according to claim 99 wherein each video frame includes a plurality of discrete segments;

one of such segments carrying a captured infrared image of such scanned geological area an another of the segments carrying a captured video image of such scanned geological area.

38. A selectively mobile system for infrared thermographic and visual scanning and comparative analysis for evaluating geological areas for subterranean anomalies comprising at least one infrared scanner, at least one video camera, a location detecting means, image and location data processing means, image and location data preservation means and a vehicle for carrying said infrared scanner, video camera, location means and processing and preservation means;

said infrared scanner and said video camera being colocated and affixed by carrying means to said vehicle and alignable to provide overlapping fields of view having a common area of focus of selectively scanned portions of a geological area as said vehicle is moved relative thereto;

said video camera providing video data output representing successive visual images of the selectively scanned area portions;

said infrared scanner providing infrared data output representing variations in temperature of the selectively scanned area portions;

said location detection means being responsive to movement of said vehicle for providing location data representing at least he relative position of said vehicle in said geological area, said location data identifying two selectively scanned area portions;

said image and location data processing means comprising;

(a) means for colorizing the infrared data output to provide colored infrared data wherein colors represent differences between anamolous and nonanamolous regions of the selectively scanned area portions;

(b) means for converting the location data to visually recordable form;

(c) means for permitting operator provision of further visually recordable information data relevant to the selectively scanned area portions;

(d) composite video processing means for superposing the colored infrared data, visual data, visually recordable location data, and information data to provide composite video data wherein video frames each have segments corresponding to such forms of data; and

(e) video monitor means for operator viewing of the composite video data;

said image and location data preservation means comprising;

(f) at least one video recorder for sequentially recording video frames of said composite video data; and

(g) color videocopy processor means selectively operator actuated for providing hard copy of selected video frames.

39. A method of infrared thermographic and video scanning and comparative analysis for evaluating geological areas for subterranean anomalies, comprising

colocating an infrared scanner and a video camera by affixing them on a mobile carrying means;

aligning the infrared scanner and video camera to provide overlapping fields of view having a common area of focus;

capturing successive infrared images of the common area of focus to provide infrared image data representative thereof;

while concommitantly

capturing successive video images of the common area of focus to provide video image data representative thereof; and

while also concommitantly

capturing successive location data uniquely representative of geologic locations within the common area of focus;

superposing the infrared image, video image and location data on a composite video data frame; and

successively video recording such video data frames for further use.

40. The method of analysis as in claim 39, further comprising simultaneously selectively monitoring the captured infrared and video images and location data for visual verification of such video data frames.

41. The scanning method as in claim 39 further comprising aligning more than one infrared scanner to have overlapping fields of view and a common area of focus with said video camera, for simultaneous scanning adjacent fields of view of such geological area.

42. The method of analysis in claim 39;

and further comprising editing such video recording of such video data frames for further use.

43. The scanning method as in claim 39;

and further comprising audibly inserting information onto such videotape recording.

44. The method of analysis as in claim 39 further comprising automatically marking on the surface of such scanned geological areas subterranean anomaly locations as such locations are identified within such captured infrared image data for facilitating later identification of such anomaly locations.

45. The scanning method as in claim 39;

and further comprising;

measuring profilometrically the roughness of a surface being scanned; and

transferring such roughness information to said data processing means for recording on said video frames.

46. The scanning method of claim 39, further comprising:

using a laser means to provide a single point of light serving as a common point of focus in each of the overlapping fields of view; and

aligning the infrared scanner and said video camera by alignment thereof with said single point of light.

47. The method of analysis of claim 39, and further comprising selectively providing hard copies of successive infrared, video and location data frames, for storage and analysis.

48. The scanning method as in claim 39;

and further comprising using at least one additional video camera, being so located and focused as to reveal a field of view differing from that of said aligned video camera and infrared scanner, and superposing the images produced by such additional video camera on successive composite video data frames.

49. The scanning method as in claim 48;

wherein said at least one additional video camera is so located and focused as to reveal a field of view analogous to the view seen by an operator of said mobile carrying means.