Reference system for online vision inspection
AssigneeBombardier Inc.
InventorOctavian IOACHIM
Life of this patent
Estimating the term…
Abstract
There is described a method for referencing a composite structure within an online vision inspection system. Referencing is performed independently from a positioning accuracy of an automated tool with which the composite structure is manufactured. Reference targets provided on a contour of a lay-up surface are used to correlate an image reference system with a mold reference system.
Claims32
A method for referencing a composite structure within a vision inspection system, the composite structure manufactured by an automated tool on a mold, the method comprising:
- providing at least one reference target on a contour of a lay-up surface;
- determining an absolute position of the at least one reference target in a mold reference system, the mold reference system setting out an absolute coordinate system for the mold;
- acquiring an image of the at least one reference target;
- determining a position of the at least one reference target from the image in an image reference system setting out a measuring coordinate system for pixels in the image;
- correlating the mold reference system and the image reference system using the position of the at least one reference target in the mold reference system and the image reference system;
- providing a measuring calibration target within a vision field of an image acquisition device, the measuring calibration target having known dimensions;
- and
- acquiring an image of the measuring calibration target and using the known dimensions to determine a size of one pixel in the image, wherein the measuring calibration target has a plurality of thicknesses to represent a plurality of layers of the composite structure.
(canceled)
(canceled)
A method for referencing a composite structure within a vision inspection system, the composite structure manufactured by an automated tool on a mold, the method comprising:
- receiving a position of at least one reference target in a mold reference system, the mold reference system setting out an absolute coordinate system for the mold;
- receiving an image of the at least one reference target;
- determining a position of the at least one reference target from the image in an image reference system setting out a measuring coordinate system for pixels in the image;
- correlating the mold reference system and the image reference system using the position of the at least one reference target in the mold reference system and the image reference system;
- providing a measuring calibration target within a vision field of an image acquisition device, the measuring calibration target having known dimensions;
- and
- acquiring an image of the measuring calibration target and using the known dimensions to determine a size of one pixel in the image, wherein the measuring calibration target has a plurality of thicknesses to represent a plurality of layers of the composite structure.
A system for referencing a composite structure within a vision inspection system, the composite structure manufactured by an automated tool on a mold, the system comprising:
- a memory;
- a processor coupled to the memory;
- and
- an application stored in the memory and executable by the processor for:
- receiving a position of at least one reference target in a mold reference system, the mold reference system setting out an absolute coordinate system for the mold;
- receiving an image of the at least one reference target;
- determining a position of the at least one reference target from the image in an image reference system setting out a measuring coordinate system for pixels in the image;
- correlating the mold reference system and the image reference system using the position of the at least one reference target in the mold reference system and the image reference systemi
- providing a measuring calibration target within a vision field of an image acquisition device, the measuring calibration target having known dimensions;
- and
- acquiring an image of the measuring calibration target and using the known dimensions to determine a size of one pixel in the image, wherein the measuring calibration target has a plurality of thicknesses to represent a plurality of layers of the composite structure.
A method for referencing a composite structure within a vision inspection system, the composite structure manufactured by an automated tool on a mold, the method comprising:
- providing at least one reference target on a contour of a lay-up surface;
- determining an absolute position of the at least one reference target in a mold reference system, the mold reference system setting out an absolute coordinate system for the mold;
- acquiring an image of the at least one reference target together with a feature under inspection;
- determining a position of the at least one reference target from the image in an image reference system setting out a measuring coordinate system for pixels in the image;
- correlating the mold reference system and the image reference system using the position of the at least one reference target in the mold reference system and the image reference system;
- determining a position of the feature under inspection within the absolute coordinate system of the mold through use of the image reference system;
- providing a measuring calibration target within a vision field of an image acquisition device, the measuring calibration target having known dimensions;
- and
- acquiring an image of the measuring calibration target and using the known dimensions to determine a size of one pixel in the image, wherein the measuring calibration target has a plurality of thicknesses to represent a plurality of layers of the composite structure.
Dependencies are inferred from the claim text.