Signal processors and methods for estimating geometric transformations of images for digital data extraction

Signal processing devices and methods estimate a geometric transform of an image. One method measures correlation between a transformed reference signal component and an image, updates, based on the measured correlation that is below a threshold, coordinates of the reference signal component to a lo...

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Bibliographic Details
Main Authors Boles, Jacob L, Lord, John D, Alattar, Osama M, Sharma, Ravi K, Lyons, Robert G
Format Patent
LanguageEnglish
Published 18.06.2024
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:Signal processing devices and methods estimate a geometric transform of an image. One method measures correlation between a transformed reference signal component and an image, updates, based on the measured correlation that is below a threshold, coordinates of the reference signal component to a location within a neighborhood around the coordinates of the transformed reference signal component; determines a new geometric transform that transforms the reference signal components to updated coordinates; and applies the new geometric transform to extract encoded digital data from the image.
Bibliography:Application Number: US202117479910