公开(公告)号：US20230191492A1

公开(公告)日：2023-06-22

申请号：US17996050

申请日：2020-04-29

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

Inventor： William J Allen ,  Temiloluwa Adegoke ,  Matthew Gaubatz ,  John C Greeven ,  Daniel Mosher ,  Thomas A Saksa ,  Vanessa Verzwyvelt ,  Michael F Klopfenstein ,  Xin Cheng ,  Richard Sweet ,  Todd Hegert Goyen

IPC: B22F10/85 ,  B33Y50/02 ,  B22F10/38 ,  B22F10/32

CPC classification number: B22F10/85 ,  B33Y50/02 ,  B22F10/38 ,  B22F10/32 ,  B33Y10/00

Abstract: In some examples, a system receives measurement data obtained based on a non-destructive imaging of an identifiable structure within a three-dimensional (3D) object formed using an additive manufacturing machine, the identifiable structure formed based on control of a characteristic of a build material of a first internal object portion relative to a characteristic of the build material in a second internal object portion, the first and second internal object portions being within the 3D object. The system determines, based on the measurement data, a deviation of a physical property of the identifiable structure from a target physical property, and outputs information indicating the deviation.

公开(公告)号：US09779298B2

公开(公告)日：2017-10-03

申请号：US15187461

申请日：2016-06-20

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

Inventor： Robert Ulicheny ,  Stephen Pollard ,  Matthew Gaubatz ,  Steven J. Simske

IPC: G06K9/00 ,  H04N1/405 ,  H04N1/32 ,  G06K9/46 ,  G06K15/02

CPC classification number: G06K9/00496 ,  G06K9/46 ,  G06K15/1881 ,  H04N1/32144 ,  H04N1/32256 ,  H04N1/405 ,  H04N2201/3235

Abstract: A forensic verification system extracts a print signature via a print signature extractor from an interior of a halftone contained in an image. The system utilizes a comparator to compare the print signature to a reference signature stored in a registry to determine differences between the print signature and the reference signature. The system utilizes a forensic analyzer to perform a forensic analysis on the signatures based on the comparison to authenticate the image.

公开(公告)号：US20160307036A1

公开(公告)日：2016-10-20

申请号：US15187461

申请日：2016-06-20

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

Inventor： Robert Ulicheny ,  Stephen Pollard ,  Matthew Gaubatz ,  Steven J. Simske

IPC: G06K9/00 ,  H04N1/405 ,  H04N1/32 ,  G06K9/46 ,  G06K15/02

CPC classification number: G06K9/00496 ,  G06K9/46 ,  G06K15/1881 ,  H04N1/32144 ,  H04N1/32256 ,  H04N1/405 ,  H04N2201/3235

Abstract: A forensic verification system extracts a print signature via a print signature extractor from an interior of a halftone contained in an image. The system utilizes a comparator to compare the print signature to a reference signature stored in a registry to determine differences between the print signature and the reference signature. The system utilizes a forensic analyzer to perform a forensic analysis on the signatures based on the comparison to authenticate the image.

Abstract translation: 取证验证系统通过打印签名提取器从包含在图像中的半色调的内部提取打印签名。 系统利用比较器将打印签名与存储在注册表中的参考签名进行比较，以确定打印签名和参考签名之间的差异。 该系统利用取证分析器根据对认证图像的比较对签名进行取证分析。

公开(公告)号：US11263784B2

公开(公告)日：2022-03-01

申请号：US16709714

申请日：2019-12-10

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

Inventor： Robert Ulichney ,  Matthew 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.