Computed tomography object inspection system

Patent metadata

Field	Value
Publication number	US-10410331-B2
Application number	US-201615280061-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Sep 29, 2016
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A method and apparatus for inspecting an object in a virtual reality environment. Computed tomography scan data for the object is identified. A first group of dimensions for a model of the object and a second group of dimensions for the computed tomography scan data for the object are adjusted such that the first group of dimensions for a first group of features in the model corresponds to the second group of dimensions for a second group of features in the computed tomography scan data. The model and the computed tomography scan data are displayed by a game engine in the virtual reality environment on a display system. Graphical indicators in the virtual reality environment are displayed when a difference is present between features in the model and the features in the computed tomography scan data, enabling identifying the difference between the object and the model of the object.

First claim

What is claimed is:

1. A method for inspecting an object in a virtual reality environment, the method comprising:
identifying, by a computer system, computed tomography scan data for the object;
adjusting, by the computer system, a first group of dimensions for a model of the object and a second group of dimensions for the computed tomography scan data for the object such that the first group of dimensions for a first group of features in the model corresponds to the second group of dimensions for a second group of features in the computed tomography scan data for the object;
displaying, by a game engine running on the computer system, the model of the object and the computed tomography scan data for the object in the virtual reality environment on a display system, wherein different images are displayed to each eye of an operator such that a three-dimensional view of the model of the object and the computed tomography scan data for the object is presented in the virtual reality environment;
determining a difference between the first group of features in the model and the second group of features in the computed tomography scan data;
displaying, by the game engine running on the computer system, a group of graphical indicators in the virtual reality environment based on the difference between the first group of features in the model and the second group of features in the computed tomography scan data, wherein the group of graphical indicators indicates the difference between the second group of features in the computed tomography scan data and the first group of features in the model; and
performing an operation on the object based on the difference between the first group of features in the model and the second group of features in the computed tomography scan data.

2. The method of claim 1 further comprising:
scanning the object with a computed tomography scanner.

3. The method of claim 2 , wherein the computed tomography scanner is selected from one of an X-ray computed tomography (X-ray CT) scanner, a positron emission tomography (PET) scanner, and a single-photon emission computed tomography (SPECT) scanner.

4. The method of claim 1 , wherein displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system comprises:
displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system, wherein the model and the computed tomography scan data are overlaid with each other.

5. The method of claim 1 , wherein displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system comprises:
displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on a display system, wherein the model and the computed tomography scan data are displayed adjacent to each other.

6. The method of claim 1 , wherein the model is a computer-aided design model and further comprising:
converting a first format for the computer-aided design model into a second format used by the game engine that displays the virtual reality environment prior to displaying the model of the object in the virtual reality environment.

7. The method of claim 1 further comprising:
removing a noise in the computed tomography scan data for the object.

8. The method of claim 1 , wherein the first group of features and the second group of features are selected from at least one of a part, a protrusion, a hole, an angle, a wire, a trace line, a pin, a surface of a structure, a component, a cable, a motor, an integrated circuit chip, a panel, a joint, and a seam.

9. An object inspection system comprising:
a display system; and
an analyzer, embodied in hardware, configured to identify a computed tomography scan data for an object; adjust a first group of dimensions for a model of the object and a second group of dimensions for the computed tomography scan data for the object such that the first group of dimensions for a first group of features in the model correspond to the second group of dimensions for a second group of features in the computed tomography scan data for the object; display the model of the object and the computed tomography scan data for the object in a virtual reality environment on the display system, wherein different images are displayed to each eye of an operator such that a three-dimensional view of the model of the object and the computed tomography scan data for the object is presented in the virtual reality environment; determine a difference between the first group of features in the model and the second group of features in the computed tomography scan data; and display a group of graphical indicators in the virtual reality environment based on the difference between the first group of features in the model and the second group of features in the computed tomography scan data, wherein the group of graphical indicators indicates the difference between the second group of features in the computed tomography scan data and the first group of features in the model, wherein based on difference between the first group of features in the model and the second group of features in the computed tomography scan data an operation is performed.

10. The object inspection system of claim 9 further comprising:
scanning the object with a computed tomography scanner.

11. The object inspection system of claim 10 , wherein the computed tomography scanner is selected from one of an X-ray computed tomography scanner (X-ray CT), a positron emission tomography (PET) scanner, and a single-photon emission computed tomography (SPECT) scanner.

12. The object inspection system of claim 9 , wherein in displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system, the analyzer is configured to display the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system, wherein the model and the computed tomography scan data are overlaid with each other.

13. The object inspection system of claim 9 , wherein in displaying the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system, the analyzer is configured to display the model of the object and the computed tomography scan data for the object in the virtual reality environment on the display system, wherein the model and the computed tomography scan data are displayed adjacent to each other.

14. The object inspection system of claim 9 , wherein the model is a computer-aided design model and wherein the analyzer is configured to convert a first format for the computer-aided design model into a second format used by a game engine that displays the virtual reality environment prior to displaying the model of the object in the virtual reality environment.

15. The object inspection system of claim 9 , wherein the analyzer is configured to remove noise in the computed tomography scan data for the object.

16. The object inspection system of claim 9 , wherein the first group of features and the second group of features are selected from at least one of a surface of a structure, a component, a cable, a motor, an integrated circuit chip, a panel, a joint, a seam, and a wire.

17. An object inspection system comprising:
a computed tomography scanner that is configured to generate

Assignees

• Nat Tech & Eng Solutions Sandia Llc

Inventors

• Jimenz Jr Edward Steven
• Nunna Rahul
• Amon Tod Tracy
• Thompson Kyle R

Classifications

• G06T7/001 Primary

  using an image reference approach · CPC title

• G06T2207/10104

  Positron emission tomography [PET] · CPC title

• G06T2207/30164

  Workpiece; Machine component · CPC title

• G06T2207/10108

  Single photon emission computed tomography [SPECT] · CPC title

• G06T2207/10081

  Computed x-ray tomography [CT] · CPC title