Stereoscopic measurement system and method

• US 9,454,822 B2
• Filed: 11/21/2012
• Issued: 09/27/2016
• Est. Priority Date: 05/22/2008
• Status: Active Grant

• Current Assignee: Matrix Electronic Measuring Properties, LLC
• Original Assignee: Matrix Electronic Measuring Properties, LLC
• Inventors: Stevens, George B., Clendening, Grady A., Waters, Windflower, Weintraub, Steven, Redden, Warren, Redden, Carl, Srack, Robert W., Srack, Janet M.
• Primary Examiner(s): Tucker, Wesley
• Application Number:
  US13/683,916
• Publication Number:
  US 20130083995A1
• Time in Patent Office: 1,406 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06T 2200/24 involving graphical user interfaces [GUIs]
• CPC Class Codes: G06T 2207/10012 Stereo images
• CPC Class Codes: G06T 2207/20101 Interactive definition of point of interest, landmark or seed
• CPC Class Codes: G06T 7/593 from stereo images

Abstract

A stereoscopic measurement system captures stereo images and determines measurement information for user-designated points within stereo images. The system comprises an image capture device for capturing stereo images of an object. A processing system communicates with the capture device to receive stereo images. The processing system displays the stereo images and allows a user to select one or more points within the stereo image. The processing system processes the designated points within the stereo images to determine measurement information for the designated points.

Claims

1. A system for obtaining measurements of an object, the system comprising:

at least one processor;

a first image of the object;

a second image of the object, the second image corresponding to the first image; and

a stereo image, comprising the first image and the second image; and

wherein the system is configured to;

designate a first measurement point in the first image;

designate a second measurement point in the first image;

designate the first measurement point in the second image;

designate the second measurement point in the second image;

define a first stereo point that corresponds to the first measurement point designated in the first and second images;

define a second stereo point that corresponds to the second measurement point designated in the first and second images;

calculate a distance between the first stereo point and the second stereo point;

identify a range of points in the second image based on the first measurement point designated in the first image;

generate a selection assist line in the second image based on the range of points;

identify another range of points in the second image based on the second measurement point designated in the first image;

generate another selection assist line in the second image based on the other range of points;

determine first pixel values adjacent to the first measurement point designated in the first image;

dynamically designate the first measurement point in the second image based on other pixel values along the selection assist line that match the determined first pixel values;

determine second pixel values adjacent to the second measurement point designated in the first image; and

dynamically designate the second measurement point in the second image based on second other pixel values along the other selection assist line that match the determined second pixel values.

2. The system of claim 1, wherein the system is further configured to receive:

a first user input for designating the first measurement point in the first image;

then,

a second user input for designating the first measurement point in the second image;

then,

a third user input for designating the second measurement point in the first image; and

then,

a fourth user input for designating the second measurement point in the second image.

3. The system of claim 1, wherein the system further comprises a memory, and wherein the system is further configured to store in the memory a plurality of stereo images.

4. The system of claim 3 wherein the plurality of stereo images is received from an image capture device.

5. The system of claim 4 wherein the image capture device comprises a first camera and a second camera.

6. The system of claim 5 wherein the memory is configured to store download history data for each of the first and second images in the plurality of stereo images.

7. The system of claim 6 wherein the download history data comprises metadata and intrinsic calibration data for the first and second cameras and a time and date that the first and second images of each of the plurality of the stereo images were received from the image capture device.

8. The system of claim 7 wherein the processor is further configured to:

process each of the plurality of stereo images to determine if the first image and the second image of a particular stereo image include images of a calibration pattern;

determine stereo calibration data for the image capture device when the first and second images of the particular stereo image include the calibration pattern, the stereo calibration data comprising location information for the first camera relative to the second camera in a coordinate system of the image capture device; and

store the stereo calibration data.

9. The system of claim 8 wherein the processor is further configured to associate the stereo calibration data with another particular stereo image of the plurality of stereo images based on the download history for that other particular stereo image when the first and second images of that other particular stereo image do not include the calibration pattern.

10. The system of claim 1 further comprising a calibration pattern, wherein the first image and the second image of the stereo image each includes an image of the calibration pattern.

11. The system of claim 1 wherein the processor is further configured to create a customized report comprising the calculated distance between the first stereo point and the second stereo point.

12. The system of claim 11 further comprising:

reference stereo point data; and

a measurement database, wherein the measurement database is configured to store the reference stereo point data; and

wherein the reference stereo point data correspond to at least one reference stereo point on the object; and

wherein the processor is further configured to create the customized report comprising calculated distances selected from a group consisting of a first distance between the first stereo point and the second stereo point, a second distance between the first stereo point and the reference stereo point, and a third distance between the second stereo point and the reference stereo point.

13. A system for obtaining measurements of an object, the system comprising

at least one processor;

a first image of the object;

a second image of the object, the second image corresponding to the first image; and

a stereo image, comprising the first image and the second image; and

wherein the system is configured to;

designate a first measurement point in the first image;

designate a second measurement point in the first image;

designate the first measurement point in the second image;

designate the second measurement point in the second image;

define a first stereo point that corresponds to the first measurement point designated in the first and second images;

define a second stereo point that corresponds to the second measurement point designated in the first and second images;

calculate a distance between the first stereo point and the second stereo point;

a second stereo image comprising another first image and another second image of an opposite portion of the object;

wherein the system is further configured to;

designate a first set of points in the first stereo image;

designate a second set of points in the second stereo image;

define a central reference plane between the first set of points and the second set of points; and

calculate symmetry deviations between each of the first set of points and each of the second set of points as a function of the defined central reference plane.

14. The system of claim 13 wherein the first set of points comprises at least three points, and the second set of points comprises at least three points.

15. A method for obtaining measurements of an object using at least one processor, the method comprising:

providing a stereo image, the stereo image comprising a first image and a second image of the object;

designating a first measurement point in the first image;

designating a second measurement point in the first image;

designating the first measurement point in the second image;

designating the second measurement point in the second image;

defining a first stereo point that corresponds to the first measurement point designated in the first and second images;

defining a second stereo point that corresponds to the second measurement point designated in the first and second images;

calculating a distance between the first stereo point and the second stereo point;

identifying a range of points in the second image based on the first measurement point designated in the first image;

generating a selection assist line in the second image based on the range of points;

determining first pixel values adjacent to the first measurement point designated in the first image;

dynamically designate the first measurement point in the second image based on other pixel values along the selection assist line that match the determined first pixel values;

identifying another range of points in the second image based on the second measurement point designated in the first image;

generating another selection assist line in the second image based on the other range of points;

determine second pixel values adjacent to the second measurement point designated in the first image; and

dynamically designating the second measurement point in the second image based on second other pixel values along the other selection assist line that match the determined second pixel values.

16. The method of claim 15 further comprising receiving:

a first user input designating the first measurement point in the first image;

then,

a second user input designating the first measurement point in the second image;

then,

a third user input designating the second measurement point in the first image;

then,

a fourth user input designating the second measurement point in the second image.

17. The method of claim 15, further comprising:

providing a memory; and

storing a plurality of stereo images in the memory.

18. The method of claim 17 wherein the plurality of stereo images is received from an image capture device.

19. The method of claim 18 wherein the image capture device comprises a first camera and a second camera.

20. The method of claim 19 wherein the memory is configured to store download history data for each of the first and second images in the plurality of stereo images.

21. The method of claim 20 wherein the download history data comprises metadata and intrinsic calibration data for the first and second cameras and a time and date that the first and second images of each of the plurality of the stereo images were received from the image capture device.

22. The method of claim 21 further comprising:

processing each of the plurality of stereo images to determine if the first image and the second image of a particular stereo image include images of a calibration pattern;

determining stereo calibration data for the image capture device when the first and second images of the particular stereo image include the calibration pattern, the stereo calibration data comprising location information for the first camera relative to the second camera in a coordinate system of the image capture device; and

storing the stereo calibration data.

23. The method of claim 22 further comprising associating the stereo calibration data with another particular stereo image of the plurality of stereo images based on the download history for that other particular stereo image when the first and second images of that other particular stereo image do not include the calibration pattern.

24. The method of claim 15 wherein the first image and the second image each includes an image of a calibration pattern.

25. The method of claim 15 further comprising creating a customized report comprising the calculated distance between the first stereo point and the second stereo point.

26. The method of claim 25 further comprising:

providing reference stereo point data;

providing a measurement database, wherein the measurement database is configured to store the reference stereo point data, and wherein the reference stereo point data correspond to at least one reference stereo point on the object; and

creating the customized report comprising calculated distances selected from a group consisting of a first distance between the first stereo point and the second stereo point, a second distance between the first stereo point and the reference stereo point, and a third distance between the second stereo point and the reference stereo point.

27. A system for obtaining measurements of an object, the system comprising:

at least one processor;

a means for obtaining first image of the object;

a means for obtaining second image of the object, the second image corresponding to the first image; and

a stereo image, comprising the first image and the second image; and

wherein the system includes means for;

designating a first measurement point in the first image;

designating a second measurement point in the first image;

designating the first measurement point in the second image;

designating the second measurement point in the second image;

defining a first stereo point that corresponds to the first measurement point designated in the first and second images;

defining a second stereo point that corresponds to the second measurement point designated in the first and second images;

calculating a distance between the first stereo point and the second stereo point;

identifying a range of points in the second image based on the first measurement point designated in the first image;

generating a selection assist line in the second image based on the range of points;

determining first pixel values adjacent to the first measurement point designated in the first image;

dynamically designating the first measurement point in the second image based on other pixel values along the selection assist line that match the determined first pixel values;

identifying another range of points in the second image based on the second measurement point designated in the first image;

generating another selection assist line in the second image based on the other range of points;

determining second pixel values adjacent to the second measurement point designated in the first image; and

dynamically designating the second measurement point in the second image based on second other pixel values along the other selection assist line that match the determined second pixel values.

28. The system according to claim 27 wherein the means for obtaining the first image includes obtaining the first image from a database.

29. The system according to claim 27 wherein the means for obtaining the second image includes obtaining the second image from a camera.