公开(公告)号：US09602719B2

公开(公告)日：2017-03-21

申请号：US14653808

申请日：2013-01-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Guy Adams ,  Stephen Pollard ,  Steven J Simske

IPC: G06K9/00 ,  H04N5/232 ,  H04N5/225 ,  G06K9/46 ,  G07D7/12 ,  G07D7/20 ,  G06K9/20

CPC classification number: H04N5/23229 ,  G06K9/00577 ,  G06K9/2036 ,  G06K9/46 ,  G07D7/121 ,  G07D7/2033 ,  H04N5/2256

Abstract: A series of images of an object are captured using illumination sources. The series of images correspond to different relative orientations of the object and the illumination sources. A forensic signature for the object is generated using one or more of the series of images. The forensic signature is unique to the object.

公开(公告)号：US20210256235A1

公开(公告)日：2021-08-19

申请号：US17306902

申请日：2021-05-03

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Steven J. Simske ,  Guy Adams ,  Stephen Pollard ,  Jason S. Aronoff

IPC: G06K7/14 ,  G06K7/10

Abstract: An object ID-centered workflow method utilizes an object identifier (ID) associated with an object. Forensic identification of serialization elements of the object ID enables access to a registry of workflows.

公开(公告)号：US11074423B2

公开(公告)日：2021-07-27

申请号：US16769723

申请日：2018-01-29

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Steven J. Simske ,  Guy Adams ,  Stephen Pollard ,  Jason S. Aronoff

IPC: G06K7/14 ,  G06K7/10

Abstract: An object ID-centered workflow method utilizes an object identifier (ID) associated with an object. Forensic identification of serialization elements of the object ID enables access to a registry of workflows.

公开(公告)号：US10521931B2

公开(公告)日：2019-12-31

申请号：US15522749

申请日：2014-12-19

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Robert Ulichney ,  Matthew D Gaubatz ,  Stephen Pollard

IPC: G06T7/00 ,  G06T7/11 ,  G06T1/00 ,  G06F16/583 ,  H04N5/232

Abstract: Examples disclosed herein relate to determining image capture position information based on a quasi-periodic pattern. For example, a processor may determine whether a target area is within a captured image based on the detection of a quasi-periodic pattern in a first detection area and in a second detection area of the captured image.

公开(公告)号：US20170294009A1

公开(公告)日：2017-10-12

申请号：US15096121

申请日：2016-04-11

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Stephen Pollard

IPC: G06T7/00

CPC classification number: G06T7/80 ,  H04N17/002

Abstract: Examples disclosed herein relate to calibrating a device based on intrinsic parameter value selection and a projected calibration target. A process may calibrate a camera and/or device by creating 3D calibration information for a device, such as a camera or projector, based on a set of intrinsic calibration intrinsic parameter value options, a calibration target of known dimensions, and a virtual calibration target created based on an image captured by the camera of a projection by the projector onto the calibration target.

公开(公告)号：US20170213329A1

公开(公告)日：2017-07-27

申请号：US15327977

申请日：2014-07-22

Applicant: Hewlett-Packard Development Company, L.P.,

Inventor： Stephen Pollard ,  Robert Ulichney ,  Matthew D Gaubatz

IPC: G06T5/10 ,  G06T7/73

CPC classification number: G06T5/10 ,  G06T3/0075 ,  G06T5/006 ,  G06T7/73 ,  G06T2207/20056

Abstract: An example method of recovering a planar projection in a captured image. The example method includes selecting displaced points in the captured image. The example method also includes recovering an affine transform of a quasi-periodic object for each of the displaced points based on peak locations of Discrete Fourier Transform (DFT) of the captured image. The example method also includes combining each of the affine transforms for the displaced points to recover the planar projection and correct for perspective distortion in the captured image.

公开(公告)号：US20210377422A1

公开(公告)日：2021-12-02

申请号：US16963323

申请日：2018-03-20

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Robert Ulichney ,  Matthew D. Gaubatz ,  Stephen Pollard

IPC: H04N1/405 ,  G06K19/06 ,  H04N1/00

Abstract: In an example method, a visually significant marking scheme is generated including a pattern of data marks and reference marks based on a received image to be printed, data information, and reference information. Data marks are generated based on the data information and the reference marks are generated based on the reference information. The image is printed including the data marks and the reference marks arranged based on the visually significant marking scheme onto the surface of the object.

公开(公告)号：US20210263597A1

公开(公告)日：2021-08-26

申请号：US17056442

申请日：2018-10-31

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Stephen Pollard

IPC: G06F3/03 ,  G06T7/593 ,  G06K9/62 ,  G06T7/187 ,  H04N13/207 ,  H04N13/239 ,  H04N5/225

Abstract: A method for recovering perspective distortion of a coded dot pattern on a surface, comprises generating a stereo-pair of images of a portion of the coded dot pattern, the stereo-pair of images comprising an overlap region comprising a subset of dots of the coded dot pattern that are common to the stereo-pair of images, selecting, in one image of the stereo-pair of images, a focus pattern from the subset of dots, determining a set of potential matches for the focus pattern in the other image of the stereo-pair of images, for each potential match, determining a set of additional dots of the coded dot pattern consistent with a single plane, and selecting a single plane with the highest number of consistent matched dots.

公开(公告)号：US20200311245A1

公开(公告)日：2020-10-01

申请号：US16754397

申请日：2017-10-30

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Stephen Pollard ,  Faisal Azhar ,  Guy Adams ,  Steven J. Simske

IPC: G06F21/44 ,  G06K7/14

Abstract: A method for authenticating an instance of an object comprises transmitting an object-instance identity derived from identity data associated with an instance of the object to an object service, receiving location data from the object service representing locations of respective ones of multiple object-instance-specific virtual marks, and transmitting data derived from one or more of the virtual marks to the object service.

公开(公告)号：US20190327386A1

公开(公告)日：2019-10-24

申请号：US16458479

申请日：2019-07-01

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Robert Ulichney ,  Matthew D. Gaubatz ,  Stephen Pollard

IPC: H04N1/405 ,  H04N1/52 ,  H04N1/60

Abstract: An example system in accordance with an aspect of the present disclosure includes a halftone engine and a gray value engine. The halftone engine is to apply halftoning to an image recursively across a plurality of levels of image scales and spatial resolutions, to generate a pattern that is at least quasi-periodic across the plurality of levels. The gray value engine is to substitute gray values recursively for at least a portion of the halftoning.