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公开(公告)号：US12094025B1
公开(公告)日：2024-09-17
申请号：US17898284
申请日：2022-08-29
Applicant: Digimarc Corporation
Inventor： H. Sprague Ackley
CPC classification number: G06T1/0028 , G06T7/0004
Abstract: The present disclosure relates to signal encoding and decoding, such as digital watermarking. One aspect of the technology relates a method of evaluating print quality of a test digital watermarking patch. The method includes: determining a reading window representing a distance in inches or centimeters from the test digital watermark patch and a camera utilized to collect a set of image frames depicting the test digital watermark patch, the test digital watermark patch comprising a first plural-bit payload, the reading window comprising a close edge and a far edge, the close edge representing a closest distance between the test digital watermark patch and the camera at which the first plural-bit payload can be decoded, and the far edge representing a farthest distance between the test digital watermark patch and the camera at which the first plural-bit payload can be decoded; determining a size ratio representing a size of the test digital watermark patch relative to the close edge and a size of the test digital watermark patch relative to the far edge; and utilizing the size ratio to evaluate the print quality of the test digital watermarking patch. Other aspects are described as well.
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公开(公告)号：US12079677B2
公开(公告)日：2024-09-03
申请号：US17359351
申请日：2021-06-25
Applicant: Digimarc Corporation
Inventor： H. Sprague Ackley
CPC classification number: G06K19/06093 , B65H7/14 , B65H7/20 , G06K19/06075 , B65H2511/11 , B65H2511/12 , B65H2511/512 , B65H2553/42
Abstract: The present disclosure relates generally to signal encoding for containers such as shipping boxes, food containers, wrapped items such as pallets. One aspect of the technology relates to an image processing method for determining spatial dimensions of an encoded surface. The method comprises: obtaining an image depicting the encoded surface, in which the encoded surface comprises one or more raw data signal tiles printed thereon, with each tile comprising a side length N in inches or centimeters; detecting each of the one or more raw data signal tiles from the obtained image; determining a total number of tiles in a vertical direction, and determining a total number of tiles in a horizontal direction; determining a height and length of the encoded surface by multiplying each of the total number of tiles in a vertical direction and the total number of tiles in a horizontal direction by the side length N. Other aspects are described as well.
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公开(公告)号：US20220222500A1
公开(公告)日：2022-07-14
申请号：US17359351
申请日：2021-06-25
Applicant: Digimarc Corporation
Inventor： H. Sprague Ackley
Abstract: The present disclosure relates generally to signal encoding for containers such as shipping boxes, food containers, wrapped items such as pallets. One aspect of the technology relates to an image processing method for determining spatial dimensions of an encoded surface. The method comprises: obtaining an image depicting the encoded surface, in which the encoded surface comprises one or more raw data signal tiles printed thereon, with each tile comprising a side length N in inches or centimeters; detecting each of the one or more raw data signal tiles from the obtained image; determining a total number of tiles in a vertical direction, and determining a total number of tiles in a horizontal direction; determining a height and length of the encoded surface by multiplying each of the total number of tiles in a vertical direction and the total number of tiles in a horizontal direction by the side length N. Other aspects are described as well.
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