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US 9,148,573 B2Granted
Non-uniform correction illumination pattern
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid B Short, Kurt E Spears, Otto K Sievert, Kenneth K Smith
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Abstract
An example system in accordance with aspects of the present disclosure includes a controller and a camera communicatively coupled to the controller to capture an image of a work surface. A projector is also provided and is coupled to the controller to project an illumination pattern onto the work surface during image capture by the camera.
Claims19
A projection capture system, comprising:
- a controller comprising a processor and a non-volatile storage storing code executable by the processor to:
- receive an image captured by a camera of an object on a work surface;
- cause a projector to project a non-uniform correction illumination pattern onto the work surface during image capture of the object by the camera;
- receive an image of a blank work surface captured by the camera during a calibration process;
- and
- determine the non-uniform correction illumination pattern based at least in part on the captured image of the blank work surface.
3 more elements
A projection capture system, comprising:
- a controller;
- a projector communicatively coupled to the controller;
- and
- a camera communicatively coupled to the controller to capture an image of an object on a work surface;
- wherein the controller is to perform a calibration process in which the controller is to determine that no object is present on a blank work surface, cause the camera to capture an image of the blank work surface using a uniform light source generated by the projector, and generate a non-uniform correction illumination pattern based at least in part on the captured image of the blank work surface.
2 more elements
A method, comprising:
- retrieving a non-uniform correction illumination pattern from a storage device;
- projecting, by a projector, said non-uniform correction illumination pattern;
- and
- capturing, by a camera, an image of an object while projecting said non-uniform correction illumination pattern, wherein said non-uniform correction illumination pattern projected by said projector increases uniformity of a light pattern in said captured image of said object as captured by said camera.
1 more element
Dependencies are inferred from the claim text.