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US 10,853,968 B2Granted
Watermark sensing methods and arrangements
AssigneeDigimarc Corporation
InventorsGeoffrey B. Rhoads, Utkarsh Deshmukh, John D. Lord
Life of this patent
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AssigneeDigimarc Corporation
InventorsGeoffrey B. Rhoads, Utkarsh Deshmukh, John D. Lord
Estimating the term…
The geometric pose of a patch of watermark data is estimated based on the position of a similar, but non-identical, patch of information within a data structure. The information in the data structure corresponds to a tiled array of calibration patterns that is sampled along at least three non-parallel paths. In a particular embodiment, the calibration patterns are sampled so that edges are globally-curved, yet locally-flat. Use of such information in the data structure enables enhanced pose estimation, e.g., speeding up operation, enabling pose estimation from smaller patches of watermark signals, and/or enabling pose estimation from weaker watermark signals. A great variety of other features and arrangements are also detailed.
A method comprising:
A method comprising:
A method comprising:
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