System and method for image based inspection of an object

1. A method comprising:

receiving an image of an object from an image capture device, wherein the image includes a representation of the object with mil-level precision;

projecting a measurement feature of the object from the image onto a three-dimensional (3D) model of the object based on a final projection matrix;

determining a difference between the projected measurement feature and an existing measurement feature on the 3D model;

sending a notification including the difference between the projected measurement feature and the existing measurement feature;

projecting a calibration feature of the object from the 3D model onto the image based on an initial projection matrix;

determining a projection error between the projected calibration feature and an existing calibration feature on the image; and

calculating the final projection matrix based on the projection error.

2. The method of claim 1 , wherein determining the projection error further comprises determining at least one of a distance error and an angular error between the projected calibration feature and the existing calibration feature.

3. The method of claim 2 , further comprising determining a weighting ratio between the distance error and the angular error.

4. The method of claim 1 , wherein the initial projection matrix includes an internal calibration matrix, an initial rotational matrix, and an initial translational matrix.

5. The method of claim 4 , wherein the final projection matrix includes the internal calibration, a final rotational matrix, and a final translational matrix.

6. The method of claim 1 , further comprising:

determining whether the difference between the projected measurement feature and the existing measurement feature exceeds a discrepancy threshold; and

sending the notification to a user in response to determining that the difference exceeds the discrepancy threshold.

7. A system comprising:

at least one processor;

a communication module stored in a memory and executable by the at least one processor, the communication module configured to receive an image of an object from an image capture device, wherein the image includes a representation of the object with mil-level precision;

a back-projection module stored in the memory and executable by the at least one processor, the back-projection module communicatively coupled with the communication module and configured to project a measurement feature of the object from the image onto a three-dimensional (3D) model of the object based on a final projection matrix and determine a difference between the projected measurement feature and an existing measurement feature on the 3D model;

a notification module stored in the memory and executable by the at least one processor, the notification module communicatively coupled with the back-projection module and configured to send a notification including the difference between the projected measurement feature and the existing measurement feature; and

a projection module configured to project a calibration feature of the Object from the 3D model onto the image based on an initial projection matrix and determine a projection error between the projected calibration feature and an existing calibration feature on the image.

8. The system of claim 7 , further comprises a matrix correction module configured to calculate the final projection matrix based on the projection error.

9. The system of claim 8 , wherein the matrix correction module is further configured to calculate the final projection matrix based on at least one of a distance error and an angular error between the projected calibration feature, and the existing calibration feature.

10. The system of claim 9 , wherein the matrix correction module is further configured to calculate the final projection matrix based on a weighting ratio between the distance error and the angular error.

11. The system of claim 7 , wherein the initial projection matrix includes an internal calibration matrix, an initial rotational matrix, and an initial translational matrix.

12. The system of claim 11 , wherein the final projection matrix includes the internal calibration matrix, a final rotational matrix, and a final translational matrix.

13. The system of claim 7 , wherein the notification module is further configured to determine whether the difference between the projected measurement feature and the existing measurement feature exceeds a discrepancy threshold and send the notification to a user in response to determining that the difference exceeds the discrepancy threshold.

14. A computer program product comprising a non-transitory computer readable physical storage device encoding instructions that, in response to execution by at least one processor, cause the processor to perform operations comprising:

receive an image of an object from an image capture device, wherein the image includes a representation of the object with mil-level precision;

project a measurement feature of the object from the image onto a three-dimensional (3D) model of the object based on a final projection matrix;

determine a difference between the projected measurement feature and an existing measurement feature on the 3D model;

send a notification including the difference between the projected measurement feature and the existing measurement feature;

project a calibration feature of the object from the 3D model onto the image based on an initial projection matrix;

determine a projection error between the projected calibration feature and an existing calibration feature on the image; and

calculate the final projection matrix based on the projection error.

15. The computer program product of claim 14 , further causing, the processor to determine at least one of a distance error and an angular error between the projected calibration feature and the existing calibration feature.

16. The computer program product of claim 15 , further causing the processor to determine a weighting ratio between the distance error and the angular error.

17. The computer program product of claim 14 , further causing the processor to perform operations comprising:

determine whether the difference between the projected measurement feature and the existing measurement feature exceeds a discrepancy threshold; and

send the notification to a user in response to determining that the difference exceeds the discrepancy threshold.