公开(公告)号：US11676238B2

公开(公告)日：2023-06-13

申请号：US17536948

申请日：2021-11-29

Applicant: Digimarc Corporation

Inventor： Trent J. Brundage ,  Vojtech Holub

IPC: G06T1/00

CPC classification number: G06T1/0028 ,  G06T1/005 ,  G06T1/0021 ,  G06T1/0078 ,  G06T1/0035 ,  G06T1/0092 ,  G06T2201/0202

Abstract: This disclosure relates to image signal processing technology including signal encoding. One claim recites a method of detecting plural-bit code conflicts within an image, the image includes at least one color separation. The image includes a first plural-bit code carried by a first symbology, and a second plural-bit code carried by a second symbology, the first symbology and the second symbology comprising different symbology types. The method includes: accessing a subset of the image that comprises the first plural-bit code carried by the first symbology; analyzing the subset of the image to decode the first plural-bit code; analyzing the at least one color separation to spatially locate and decode the second plural-bit code carried by the second symbology; comparing the first plural-bit code and the second plural-bit code; and outputting information if a conflict is identified by said act of comparing, in which the information comprises a spatial location within the image of the conflict. Of course, other claims, features and combinations are described as well.

公开(公告)号：US11636279B1

公开(公告)日：2023-04-25

申请号：US17339582

申请日：2021-06-04

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Vahid Sedighianaraki

IPC: G06K7/14

Abstract: The present disclosure relates to color localizing machine-readable indicia (e.g., a 1D or 2D barcode) found in imagery, and related image processing technology. One implementation involves locating regions associated with a first color and locating regions associated with a second color and creating a centroid for each of the located regions. A metric can be established for a color region couple comprising a located first color region and a located second color region, the metric including: i) a distance between a located first color region centroid and a located second color region centroid, and ii) a ratio of areas of the located first color region and the located second color region. Of course, other implementations, technology and combinations are provided.

公开(公告)号：US20220343453A1

公开(公告)日：2022-10-27

申请号：US17670305

申请日：2022-02-11

Applicant: Digimarc Corporation

Inventor： Vojtech Holub

IPC: G06T1/00

Abstract: This disclosure relates to advanced signal processing technology including steganographic embedding and digital watermarking. One combination includes an image processing method comprising: obtaining data representing a digital image; using one or more processors, embedding an information signal within the data representing a digital image, the information signal comprising a synchronization component and a message component, said embedding yielding altered data; transforming the altered data to estimate a print and optical capture process, said transforming yielding transformed, altered data; for each of a plurality of regions within the transformed, altered data, generating detectability measures, in which a first detectability measure comprises a measure corresponding to synchronization component strength within region of the transformed, altered data, and in which a second measure comprises a measure corresponding to message component strength within the region of the transformed, altered data; based on a combination of the detectability measures from each of the plurality of regions, determining a likelihood that the altered data, once printed on a physical substrate, will be detectable from optical scan data representing such. Of course, other features and combinations are described as well.

公开(公告)号：US20220198601A1

公开(公告)日：2022-06-23

申请号：US17536948

申请日：2021-11-29

Applicant: Digimarc Corporation

Inventor： Trent J. Brundage ,  Vojtech Holub

IPC: G06T1/00

Abstract: This disclosure relates to advanced signal processing technology including signal encoding. One combination includes an apparatus comprising: memory for storing image data, the image data comprising a plurality of color separations or channels, in which the image data comprises at least a first type of machine-readable symbology comprising a 1D barcode represented therein and a second type of machine-readable symbology comprising a first signal represented therein, in which the second type of machine-readable symbology comprises a different type of machine-readable symbology relative to the first type of machine-readable symbology, the 1D barcode comprising a first plural-bit code and the first signal comprising a second plural-bit code; a barcode reader configured to analyze the image data to decode the 1D barcode to obtain the first plural-bit code; a signal decoder configured to analyze one or more color separations or channels of the plurality of color separations or channels to decode the first signal to obtain the second plural-bit code; one or more processors configured to determine whether the second plural-bit code and the first plural-bit code conflict; and to identify a conflict based on a conflict determination. Of course, other features and combinations are described as well.

公开(公告)号：US11367159B1

公开(公告)日：2022-06-21

申请号：US16823135

申请日：2020-03-18

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: G06T1/00 ,  H04N1/32 ,  G06Q20/20

Abstract: In an illustrative embodiment, watermark decoding reliability is increased, for images of watermarked objects captured at close distances, by reducing influence of pixel noise (e.g., shot noise). In the same or different embodiment, watermark decoding reliability is increased, for images of watermarked objects captured from far distances, by reducing image under-sampling. A particular implementation down-samples input imagery twice—a first time by a fixed factor, preparatory to performing an FFT, and a second time by a variable factor, preparatory to submitting the image for decoding, where the variable factor is determined using results from the FFT. A number of other features and arrangements are also detailed.

公开(公告)号：US11250534B2

公开(公告)日：2022-02-15

申请号：US16179740

申请日：2018-11-02

Applicant: Digimarc Corporation

Inventor： Vojtech Holub

IPC: G06T1/00

Abstract: Advanced signal processing technology including steganographic embedding and digital watermarking is described. For an encoded image, detectability measures can be generated including a first detectability measure associated with a synchronization component strength and a second detectability measure associated with a message component strength. Such measures can be used to help determine a likelihood that the encoded image, once printed on a physical substrate, will be detectable from optical scan data representing such. Of course, other features and combinations are described as well.

公开(公告)号：US20220004727A1

公开(公告)日：2022-01-06

申请号：US17372179

申请日：2021-07-09

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Denemark ,  Brett A. Bradley ,  Geoffrey B. Rhoads ,  Emma C. Sinclair ,  Vojtech Holub ,  Hugh L. Brunk ,  Trent J. Brundage ,  John F. Stach ,  John D. Lord ,  Joel R. Meyer ,  Tomas Filler ,  Ajith M. Kamath ,  Mark-Andrew Ray Tait ,  Kevin J. Hansonoda ,  Adnan M. Alattar

IPC: G06K7/14

Abstract: The parameters of an optical code are optimized to achieve improved signal robustness, reliability, capacity and/or visual quality. An optimization program can determine spatial density, dot distance, dot size and signal component priority to optimize robustness. An optical code generator employs these parameters to produce an optical code at the desired spatial density and robustness. The optical code is merged into a host image, such as imagery, text and graphics of a package or label, or it may be printed by itself, e.g., on an otherwise blank label or carton. A great number of other features and arrangements are also detailed.

公开(公告)号：US20210387399A1

公开(公告)日：2021-12-16

申请号：US17347358

申请日：2021-06-14

Applicant: Digimarc Corporation

Inventor： Tomas Filler ,  Vojtech Holub ,  Hugh L. Brunk ,  Ravi K. Sharma

IPC: B29C59/02 ,  G06K19/06 ,  B29C59/00

Abstract: A thermoplastic resin, such as PET, is molded to define a 2D code signal, such as a digital watermark pattern. The mold can comprise an array of hole or spike features, some of which are directly vented to atmospheric pressure. A network of channels can link the other features to the directly-vented features, so all features are vented. A mold comprising spike features can form a digital watermark pattern on an item such that the watermark payload is decodable both from the side of the item that contacted the mold, and also from the opposite, non-contact side of the item. To aid entry of viscous thermoplastic among the very fine elemental features of a mold representing a watermark signal pattern, the features can be overlapped, forming a connected binary mark having larger features. A variety of other improvements and arrangements are also detailed.

公开(公告)号：US11194984B2

公开(公告)日：2021-12-07

申请号：US16872020

申请日：2020-05-11

Applicant: Digimarc Corporation

Inventor： Vojtech Holub ,  Tomas Filler

IPC: G06K7/14 ,  G06K9/62 ,  G06K9/46 ,  G06T1/00

Abstract: The present disclosures relates to finding or localizing machine readable indicia (e.g., a barcode or digital watermark) in imagery. One claim recites an apparatus comprising: memory for buffering blocks of image data, the image data having been captured with a camera and depicting a printed object; one or more processors programmed for: generating an edge orientation sensitive feature set from the image data; using a first trained classifier to determine whether the feature set includes data representing a barcode; and using N additional trained classifiers to determine an orientation angle associated with the barcode, wherein N comprises an integer greater than 3, and wherein the orientation angle is selected based on a probability metric. Of course, other claims and combinations are provided too.

公开(公告)号：US20210368061A1

公开(公告)日：2021-11-25

申请号：US17207311

申请日：2021-03-19

Applicant: Digimarc Corporation

Inventor： Vojtech Holub

IPC: H04N1/32 ,  G06T1/00 ,  G06K19/06 ,  G06K7/14 ,  G06K7/10

Abstract: The present technology relates to image signal processing. One aspect of the present technology involves analyzing reference imagery gathered by a camera system to determine which parts of an image frame offer high probabilities of—relative to other image parts—containing decodable watermark data. Another aspect of the present technology whittles-down such determined image frame parts based on detected content (e.g., a cereal box) vs expected background within such determined image frame parts.