Pixel deviations
AssigneeHewlett-Packard Development Company, L.P.
InventorsFred Charles Thomas, III, Joshua Alan St. John, Santiago Garcia-Reyero Vinas, Miles Maxwell Claver
Life of this patent
Estimating the term…
Abstract
In an example, a photometric imaging device comprises a light source to illuminate a target area including a set of fiducials, an imaging device to capture images of the set of fiducials illuminated by the light source with different image viewing settings, and a controller. The controller is to: control the light source to subsequently illuminate the set of fiducials with the different image viewing settings; determine locations of the set of fiducials on the captured images; determine pixel deviations between the determined locations; and determine offset data based at least in part on the determined pixel deviations.
Claims20
A photometric imaging device, comprising:
- a light source to illuminate a target area including a set of fiducials in accordance with different image viewing settings, wherein the different image viewing settings comprise different directions of the light source being emitted towards the set of fiducials;
- an imaging device to capture images of the set of fiducials illuminated by the light source with the different image viewing settings;
- a controller to:
- control the light source to subsequently illuminate the set of fiducials with the different image viewing settings;
- determine locations of the set of fiducials on images captured by the imaging device at the different image viewing settings;
- calculate pixel deviations between the determined locations;
- and
- determine offset data based at least in part on the pixel deviations.
A photometric imaging system, comprising:
- a plurality of lamps;
- an imaging device to capture images of a fiducial illuminated by lamps from different relative locations;
- a polarizer to provide a plurality of polarizer view states;
- a controller to:
- determine locations of the fiducial on the images, the images captured by the imaging device at the plurality of polarizer view states and illuminated by the lamps from the different relative locations;
- calculate pixel deviations between the determined locations;
- determine offset data based at least in part on the pixel deviations;
- and
- store the determined offset data for use in a photometric imaging operation of a sample in the photometric imaging system.
A non-transitory computer-readable medium storing specific computer-executable instructions that, when executed by a processor of a computing device, cause the computing device to at least:
- capture, by an imaging device, images including a set of fiducials illuminated by a light source under a plurality of image viewing settings, wherein the plurality of image viewing settings includes illumination from the light source from different directions;
- determine locations of the set of fiducials on the images;
- calculate pixel deviations between the locations of the set of fiducials on the images;
- and
- determine offset data based at least in part on the pixel deviations.
Dependencies are inferred from the claim text.