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    DIGITAL WATERMARKING AND DATA HIDING WITH NARROW-BAND ABSORPTION MATERIALS
    82.
    发明申请
    DIGITAL WATERMARKING AND DATA HIDING WITH NARROW-BAND ABSORPTION MATERIALS 有权
    数字水印和数据采用窄带吸收材料

    公开(公告)号：US20160275326A1

    公开(公告)日：2016-09-22

    申请号：US15073483

    申请日：2016-03-17

    Applicant: Digimarc Corporation

    Inventor： Kristyn R. Falkenstern ,  Alastair M. Reed ,  Vojtech Holub ,  Tony F. Rodriguez

    IPC: G06K7/14 ,  G06K7/10 ,  G06T1/00

    CPC classification number: G06T1/0021 ,  B42D25/333 ,  G06K7/12 ,  G06K19/06056 ,  G06K19/0614 ,  G07D7/00 ,  G07D7/0034 ,  G07D7/1205

    Abstract: The present disclosure relates to signal processing such as digital watermarking and data hiding. A sparse or dense digital watermark signal can be conveyed with a narrow-band absorption material corresponding to a center wavelength of a Point of Sale (POS) barcode scanner. The POS barcode scanner typically captures 2D imagery. Since the narrow-band absorption material absorbs over a narrow-band it is relatively imperceptible to the Human Visual System (HVS) but can be seen by the POS scanner.

    Abstract translation: 本公开涉及诸如数字水印和数据隐藏的信号处理。 稀疏或密集的数字水印信号可以与对应于销售点（POS）条形码扫描器的中心波长的窄带吸收材料一起传送。 POS条码扫描器通常捕获2D图像。 由于窄带吸收材料吸收在窄带上，所以对于人类视觉系统（HVS）来说它是相对不可察觉的，但POS扫描仪可以看出。

    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data, and robustness checks
    88.
    发明授权
    Detecting conflicts between multiple different encoded signals within imagery, using only a subset of available image data, and robustness checks 有权

    公开(公告)号：US11941720B2

    公开(公告)日：2024-03-26

    申请号：US17671344

    申请日：2022-02-14

    Applicant: Digimarc Corporation

    Inventor： Yang Bai ,  Vojtech Holub ,  Vahid Sedighianaraki

    IPC: G06K19/06 ,  G06K7/14 ,  G06T1/00

    CPC classification number: G06T1/0028 ,  G06K7/1413 ,  G06K7/1417 ,  G06K19/06028 ,  G06K19/06037 ,  G06T2201/0061 ,  G06T2201/0202

    Abstract: This disclosure relates to advanced signal processing technology including signal encoding and digital watermarking. Image areas are selected in an encoded digital design, and corresponding areas from a printed version of the encoded digital design are evaluated to determined signal robustness after printing. One claim recites an image processing method for selecting image areas to test for robustness of encoded signals, the method comprising: obtaining digital artwork comprising a plurality of colors, the digital artwork comprising multiple instances of an encoded signal; selecting a set encoding tiles, and for each encoding tile determining encoding detectability measure associated therewith; creating a bin for each encoding technology used to encode the encoded signal; for each bin, removing any encoding tile having a detectability measure below a predetermined threshold; for each bin, prioritizing remaining encoding tiles; selecting an encoding tile based on the prioritization per bin, and spatially locating the selected encoding tile relative to the digital artwork. Other technology is described in this patent document.

    Methods and arrangements for sorting items, useful in recycling
    90.
    发明授权
    Methods and arrangements for sorting items, useful in recycling 有权

    公开(公告)号：US11878327B2

    公开(公告)日：2024-01-23

    申请号：US17470674

    申请日：2021-09-09

    Applicant: Digimarc Corporation

    Inventor： Ravi K Sharma ,  Tomas Filler ,  Vojtech Holub ,  Osama M. Alattar ,  Hugh L. Brunk ,  John D. Lord ,  Geoffrey B. Rhoads ,  William Y. Conwell ,  Ajith M. Kamath

    IPC: B07C5/34 ,  B07C5/342

    CPC classification number: B07C5/3412 ,  B07C5/3422 ,  B07C2501/0045

    Abstract: A plastic item, such as a beverage bottle, can convey two distinct digital watermarks, encoded using two distinct signaling protocols. A first, printed label watermark conveys a retailing payload, including a Global Trade Item Number (GTIN) used by a point-of-sale scanner in a retail store to identify and price the item when presented for checkout. A second, plastic texture watermark may convey a recycling payload, including data identifying the composition of the plastic. The use of two different signaling protocols assures that a point-of-sale scanner will not spend its limited time and computational resources working to decode the recycling watermark, which may lack data needed for retail checkout. In some embodiments, a recycling apparatus makes advantageous use of both types of watermarks to identify the plastic composition of the item (e.g., relating GTIN to plastic type using an associated database), thereby increasing the fraction of items that are correctly identified for sorting and recycling. In other embodiments the plastic item (or a label thereon) bears only a single watermark. A great number of other features and arrangements are also detailed.

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