EDGE MEASUREMENT VIDEO TOOL AND INTERFACE INCLUDING AUTOMATIC PARAMETER SET ALTERNATIVES

• US 20140126804A1
• Filed: 12/18/2012
• Published: 05/08/2014
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Mitutoyo Corporation
• Original Assignee: Mitutoyo Corporation
• Inventors: Bryll, Robert Kamil, Delaney, Mark Lawrence, Nahum, Michael, Ding, Yuhua
• Granted Patent: US 9,177,222 B2
• Time in Patent Office: Days
• US Class Current: 382/141
• CPC Class Codes: G01N 21/8806 Specially adapted optical and illumination features
• CPC Class Codes: G06T 2200/24 involving graphical user interfaces [GUIs]
• CPC Class Codes: G06T 2207/20092 Interactive image processing based on input by user
• CPC Class Codes: G06T 2207/30108 Industrial image inspection
• CPC Class Codes: G06T 7/13 Edge detection

Abstract

A user interface for setting parameters for an edge location video tool is provided. In one implementation, the user interface includes a multi-dimensional parameter space representation with edge zones that allows a user to adjust a single parameter combination indicator in a zone in order to adjust multiple edge detection parameters for detecting a corresponding edge. The edge zones indicate the edge features that are detectable when the parameter combination indicator is placed within the edge zones. In another implementation, representations of multiple edge features that are detectable by different possible combinations of the edge detection parameters are automatically provided in one or more windows. When a user selects one of the edge feature representation, the corresponding combination of edge detection parameters is set as the parameters for the edge location video tool.

Claims

1. A method for defining edge detection parameters in a machine vision inspection system user interface, the method comprising:

providing an edge location video tool having a plurality of edge detection parameters;

defining a region of interest (ROI) for the edge location video tool, including at least a first respective edge feature in the region of interest;

automatically determining a plurality of candidate parameter combinations of the plurality of edge detection parameters, wherein respective candidate parameter combinations are usable to detect respective edge features in the region of interest; and

operating the user interface to display respective candidate parameter combination representations corresponding to the respective candidate parameter combinations usable to detect respective edge features in the region of interest, wherein the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed respective candidate parameter combination representations, the user selection action resulting in a selection of a combination of edge detection parameters that govern operation of the edge location video tool in the defined region of interest.

2. The method of claim 1, wherein:

the user interface comprises a multi-dimensional parameter space representation of possible combinations of the plurality of edge detection parameters;

the step of determining a plurality of candidate parameter combinations comprises determining a first set of respective candidate parameter combinations usable to detect the first respective edge feature; and

the step of operating the user interface comprises displaying a representation of a first set of respective candidate parameter combinations as a first zone in the multi-dimensional parameter space representation.

3. The method of claim 2, wherein:

the user interface is configured to allow a user to perform a parameter combination selection action relative to the first zone, comprising moving a parameter combination indicator to a location within the first zone and operating the parameter combination indicator to select the parameter combination corresponding to that location.

4. The method of claim 3, wherein:

the region of interest (ROI) includes at least a second respective edge feature in the region of interest;

the step of determining a plurality of candidate parameter combinations comprises determining a second set of respective candidate parameter combinations usable to detect the second respective edge feature; and

the step of operating the user interface comprises displaying a representation of the second set of respective candidate parameter combinations as a second zone in the multi-dimensional parameter space representation.

5. The method of claim 4, wherein the user interface further comprises at least one edge feature representation window that includes an image of the field of view of the machine vision inspection system and a representation of the edge features detectable by the combination of parameters indicated by a current configuration of the parameter combination indicator superimposed on the image of the field of view.

6. The method of claim 5, wherein the representation of the edge features detectable by the combination of parameters indicated by the current configuration of the parameter combination indicator comprises a plurality of detectable edge points, corresponding to a plurality of scan lines across the ROI, superimposed on the image of the field of view.

7. The method of claim 6, wherein the at least one edge feature representation window and the multi-dimensional parameter space representation are synchronized such that an adjustment or selection in the at least one edge feature representation window results in a corresponding indication in the multi-dimensional parameter space representation.

8. The method of claim 1, wherein:

the region of interest (ROI) includes at least a second respective edge feature in the region of interest;

the user interface comprises a representation of the first and second respective edge features;

the step of automatically determining a plurality of candidate parameter combinations comprises determining at least a first respective candidate parameter combination usable to detect the first respective edge feature, and determining at least a second respective candidate parameter combination usable to detect the second respective edge feature; and

the step of operating the user interface comprises displaying the representation of the first and second respective edge features.

9. The method of claim 8, wherein:

the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed representations of the first and second respective edge features, comprising moving a cursor to a location proximate to the representation of a desired one of the first and second respective edge features and operating the cursor to select the parameter combination corresponding to that edge.

10. The method of claim 8, wherein:

the representation of the first and second respective edge features comprises a first indicator superimposed on an image of the first respective edge feature indicating that a corresponding first respective candidate parameter combination has been determined, and a second indicator superimposed on an image of the second respective edge feature indicating that a corresponding second respective candidate parameter combination has been determined.

11. The method of claim 10, wherein the first and second indicators comprise detected edge points along the first and second edge features, respectively.

12. The method of claim 8, wherein:

the representation of the first respective edge feature comprises a first edge window including the first respective edge feature indicating that a corresponding first respective candidate parameter combination has been determined, and the representation of the second respective edge feature comprises a second edge window including the second respective edge feature indicating that a corresponding second respective candidate parameter combination has been determined; and

the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed representations of the first and second respective edge features, comprising moving a cursor to a location in a desired one of the first and second edge windows and operating the cursor to select the parameter combination corresponding to that edge.

13. The method of claim 8, wherein:

the user interface further comprises a multi-dimensional parameter space representation of possible combinations of the plurality of edge detection parameters; and

the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed representations of the first and second respective edge features, comprising moving a cursor to a location proximate to the representation of a desired one of the first and second respective edge features and operating the cursor to select either the first or second respective edge feature, in response to which the user interface is further configured to display one of;

a representation of a first set of respective candidate parameter combinations as a first zone in the multi-dimensional parameter space representation if the first respective edge feature is selected, wherein the first set of respective parameter combinations comprises the first respective candidate parameter combination usable to detect the first respective edge feature in addition to other candidate parameter combinations usable to detect the first respective edge feature;

or

a representation of a second set of respective candidate parameter combinations as a second zone in the multi-dimensional parameter space representation if the second respective edge feature is selected, wherein the second set of respective parameter combinations comprises the second respective candidate parameter combination usable to detect the second respective edge feature in addition to other candidate parameter combinations usable to detect the second respective edge feature.

14. A system for defining edge detection parameters in a machine vision inspection system user interface, comprising:

a memory for storing programmed instructions;

a processor configured to execute the programmed instructions to perform operations including;

providing an edge location video tool having a plurality of edge detection parameters;

defining a region of interest (ROI) for the edge location video tool, including at least a first respective edge feature in the region of interest;

automatically determining a plurality of candidate parameter combinations of the plurality of edge detection parameters, wherein respective candidate parameter combinations are usable to detect respective edge features in the region of interest; and

operating the user interface to display respective candidate parameter combination representations corresponding to the respective candidate parameter combinations usable to detect respective edge features in the region of interest, wherein the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed respective candidate parameter combination representations, the user selection action resulting in a selection of a combination of edge detection parameters that govern operation of the edge location video tool in the defined region of interest.

15. The system of claim 14, wherein:

the user interface comprises a multi-dimensional parameter space representation of possible combinations of the plurality of edge detection parameters;

the step of determining a plurality of candidate parameter combinations comprises determining a first set of respective candidate parameter combinations usable to detect the first respective edge feature; and

the step of operating the user interface comprises displaying a representation of a first set of respective candidate parameter combinations as a first zone in the multi-dimensional parameter space representation.

16. The system of claim 14, wherein:

the region of interest (ROI) includes at least a second respective edge feature in the region of interest;

the user interface comprises a representation of the first and second respective edge features;

the step of automatically determining a plurality of candidate parameter combinations comprises determining at least a first respective candidate parameter combination usable to detect the first respective edge feature, and determining at least a second respective candidate parameter combination usable to detect the second respective edge feature; and

the step of operating the user interface comprises displaying the representation of the first and second respective edge features.

17. The system of claim 16, wherein:

the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed representations of the first and second respective edge features, comprising moving a cursor to a, location proximate to the representation of a desired one of the first and second respective edge features and operating the cursor to select the parameter combination corresponding to that edge.

18. A computer readable storage medium with instructions stored thereon that are executable by a processor to perform operations of:

providing an edge location video tool having a plurality of edge detection parameters;

defining a region of interest (ROI) for the edge location video tool, including at least a first respective edge feature in the region of interest;

automatically determining a plurality of candidate parameter combinations of the plurality of edge detection parameters, wherein respective candidate parameter combinations are usable to detect respective edge features in the region of interest; and

operating the user interface to display respective candidate parameter combination representations corresponding to the respective candidate parameter combinations usable to detect respective edge features in the region of interest, wherein the user interface is configured to allow a user to perform a parameter combination selection action relative to the displayed respective candidate parameter combination representations, the user selection action resulting in a selection of a combination of edge detection parameters that govern operation of the edge location video tool in the defined region of interest.

19. The computer readable storage medium of claim 18, wherein:

the user interface comprises a multi-dimensional parameter space representation of possible combinations of the plurality of edge detection parameters;

the step of determining a plurality of candidate parameter combinations comprises determining a first set of respective candidate parameter combinations usable to detect the first respective edge feature; and

the step of operating the user interface comprises displaying a representation of a first set of respective candidate parameter combinations as a first zone in the multi-dimensional parameter space representation.

20. The computer readable storage medium of claim 18, wherein:

the region of interest (ROI) includes at least a second respective edge feature in the region of interest;

the user interface comprises a representation of the first and second respective edge features;

the step of automatically determining a plurality of candidate parameter combinations comprises determining at least a first respective candidate parameter combination usable to detect the first respective edge feature, and determining at least a second respective candidate parameter combination usable to detect the second respective edge feature; and

the step of operating the user interface comprises displaying the representation of the first and second respective edge features.