公开(公告)号：US20190332840A1

公开(公告)日：2019-10-31

申请号：US16405621

申请日：2019-05-07

Applicant: Digimarc Corporation

Inventor： Ravi K. Sharma ,  Tomas Denemark ,  Brett A. Bradley ,  Geoffrey B. Rhoads ,  Eoin 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：US20190266692A1

公开(公告)日：2019-08-29

申请号：US16247459

申请日：2019-01-14

Applicant: Digimarc Corporation

Inventor： John F. Stach ,  Ajith M. Kamath

IPC: G06T1/00

Abstract: Differential modulation schemes encode a data channel within host signal or noisy environment in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. Differential arrangements enable a decoder to suppress host signal or other background signal interference when detecting, synchronizing and extracting an encoded data channel. They also enable the incorporation of implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

公开(公告)号：US10152634B2

公开(公告)日：2018-12-11

申请号：US15146663

申请日：2016-05-04

Applicant: Digimarc Corporation

Inventor： Ajith M. Kamath ,  Kurt M. Eaton

IPC: G06K9/00 ,  G06Q30/00 ,  H04N21/234 ,  H04N21/254 ,  H04N21/2665 ,  H04N21/8358 ,  G01B11/27 ,  G06K7/14 ,  G06K9/20 ,  G06K9/46 ,  G06K9/78 ,  G07G1/00 ,  H04M1/02 ,  H04N5/225 ,  G06T7/73

Abstract: Arrangements are detailed to process imagery of an object, captured by a camera, based on contextual data that at least partially characterizes a condition of the object when the imagery was captured. Contextual data can be obtained directly by a sensor or can be derived by pre-processing the captured imagery. The captured imagery can be processed to detect features such as digital watermarks, fingerprints, barcodes, etc. A great number of other features and arrangements are also detailed.

公开(公告)号：US09747656B2

公开(公告)日：2017-08-29

申请号：US14724729

申请日：2015-05-28

Applicant: Digimarc Corporation

Inventor： John Stach ,  Ajith M. Kamath

IPC: G06K9/00 ,  G06T1/00

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T1/0064 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0202

Abstract: Differential modulation schemes encode a data channel within host signal or noisy environment in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. Differential arrangements enable a decoder to suppress host signal or other background signal interference when detecting, synchronizing and extracting an encoded data channel. They also enable the incorporation of implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

公开(公告)号：US20160217547A1

公开(公告)日：2016-07-28

申请号：US14724729

申请日：2015-05-28

Applicant: Digimarc Corporation

Inventor： John Stach ,  Ajith M. Kamath

IPC: G06T1/00

CPC classification number: G06T1/005 ,  G06T1/0028 ,  G06T1/0064 ,  G06T2201/0061 ,  G06T2201/0065 ,  G06T2201/0202

Abstract: Differential modulation schemes encode a data channel within host signal or noisy environment in a manner that is robust, flexible to achieve perceptual quality constraints, and provides improved data capacity. Differential arrangements enable a decoder to suppress host signal or other background signal interference when detecting, synchronizing and extracting an encoded data channel. They also enable the incorporation of implicit or explicit synchronization components, which are either formed from the data signal or are complementary to it.

Abstract translation: 差分调制方案以稳健，灵活的方式对主机信号或噪声环境中的数据信道进行编码，以实现感知质量约束，并提供改进的数据容量。 差分布置使得解码器能够在检测，同步和提取编码数据信道时抑制主机信号或其他背景信号干扰。 它们还使得能够并入隐式或显式同步分量，这些组件由数据信号形成或与之互补。