CALIBRATION METHOD FOR COMPENSATING FOR NON-UNIFORMITY ERRORS IN SENSORS MEASURING SPECULAR REFLECTION

CALIBRATION METHOD FOR COMPENSATING FOR NON-UNIFORMITY ERRORS IN SENSORS MEASURING SPECULAR REFLECTION

This invention relates to a method for the calibration of linear array photo sensors operating in a specular reflection mode. Errors may be introduced when a highly diffused image is measured by the linear array photosensor that was calibrated in a specular mode. These errors result in artifacts suc...

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Hauptverfasser: OSSMAN KENNETH R, VITURRO R. ENRIQUE
Format: Patent
Sprache:eng
Schlagworte:
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASURING
PHOTOGRAPHY
PHYSICS
TESTING
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creator OSSMAN KENNETH R
VITURRO R. ENRIQUE
description This invention relates to a method for the calibration of linear array photo sensors operating in a specular reflection mode. Errors may be introduced when a highly diffused image is measured by the linear array photosensor that was calibrated in a specular mode. These errors result in artifacts such as streaks in the captured image. The method measures non-uniformity errors using a highly diffuse white reflective surface, and then applies an appropriate scaled pixel-wise correction factor to the image when the sensor is used in the specular mode.
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subjects CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASURING
PHOTOGRAPHY
PHYSICS
TESTING
title CALIBRATION METHOD FOR COMPENSATING FOR NON-UNIFORMITY ERRORS IN SENSORS MEASURING SPECULAR REFLECTION
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