Fiducial location
AssigneesPurdue Research Foundation, Hewlett-Packard Development Company, L.P.
InventorsYujian XU, Stephen Bernard Pollard, Robert ULICHNEY, Matthew D GAUBATZ, Jan Philip ALLEBACH
Life of this patent
Estimating the term…
Abstract
Examples of methods for fiducial location are described herein. In some examples, a method may include estimating a first location of an unidentified fiducial based on image coordinates and grid coordinates of a set of contiguous fiducials. In some examples, the method may include determining that a candidate fiducial is a fiducial based on comparing the first location with a second location of the candidate fiducial.
Claims15
A method, comprising:
- estimating a first location of an unidentified fiducial based on image coordinates and grid coordinates of a set of contiguous fiducials;
- and
- determining that a candidate fiducial is a fiducial based on comparing the first location with a second location of the candidate fiducial.
An apparatus, comprising:
- a memory;
- and
- a processor coupled to the memory, wherein the processor is to:
- detect dots in an image of an object;
- determine a fiducial dot subset of the dots;
- and
- extend the fiducial dot subset based on image space coordinates and integer space coordinates of the fiducial dot subset.
A non-transitory tangible computer-readable medium storing executable code, comprising:
- code to cause a processor to estimate a first location of an unidentified fiducial based on image coordinates and grid coordinates of a set of fiducials;
- code to cause the processor to look up a second location of a candidate fiducial in an array based on the first location;
- code to cause the processor to calculate a distance between the first location and the second location;
- and
- code to cause the processor to determine that the candidate fiducial is a fiducial based on the distance.
Dependencies are inferred from the claim text.