公开(公告)号：US10425637B2

公开(公告)日：2019-09-24

申请号：US15521701

申请日：2014-10-31

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

Inventor： David Berfanger ,  John Hatcher ,  Amanda J Gillihan

IPC: H04N1/40 ,  H04N17/00 ,  G06F16/583 ,  H04N1/60 ,  G06T7/80

Abstract: Example implementations relate to cross-calibration of imagers. For example, cross-calibration of imagers can include modeling a response of each of a plurality of imagers to a color sample, modeling a response of a composite the a plurality of imagers to the color sample based on the modeled response of each of the plurality of imagers to the color sample, generating generate a cross-calibration of the modeled response of each of the plurality of imagers to the modeled response of the composite of the plurality of imagers, and generating a calibration of the modeled response of the composite of the plurality of imagers to a response of a reference imager.

公开(公告)号：US10341504B2

公开(公告)日：2019-07-02

申请号：US15747653

申请日：2015-10-02

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

Inventor： David Berfanger ,  Jorge Miguel Gomez Lucia ,  John Hatcher ,  Hosein Ali Razavi

IPC: H04N1/60 ,  H04N1/00 ,  H04N1/401

Abstract: Example implementations relate to PRNU suppression. For example, PRNU suppression may include performing a calibration surface PRNU characterization using a scanning system, performing a document-based PRNU characterization using the scanning system, and determining a correction function for PRNU suppression for the scanning system based on the calibration surface PRNU characterization and the document-based PRNU characterization.

公开(公告)号：US20180213092A1

公开(公告)日：2018-07-26

申请号：US15747653

申请日：2015-10-02

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

Inventor： David Berfanger ,  Jorge Miguel Gomez Lucia ,  John Hatcher ,  Hosein Ali Razavi

IPC: H04N1/00

CPC classification number: H04N1/00087 ,  H04N1/00018 ,  H04N1/401

Abstract: Example implementations relate to PRNU suppression. For example, PRNU suppression may include performing a calibration surface PRNU characterization using a scanning system, performing a document-based PRNU characterization using the scanning system, and determining a correction function for PRNU suppression for the scanning system based on the calibration surface PRNU characterization and the document-based PRNU characterization.

公开(公告)号：US20170244961A1

公开(公告)日：2017-08-24

申请号：US15521701

申请日：2014-10-31

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

Inventor： David Berfanger ,  John Hatcher ,  Amanda J Gillihan

IPC: H04N17/00 ,  H04N1/60 ,  G06F17/30 ,  G06T7/80

Abstract: Example implementations relate to cross-calibration of imagers. For example, cross-calibration of imagers can include modeling a response of each of a plurality of imagers to a color sample, modeling a response of a composite the a plurality of imagers to the color sample based on the modeled response of each of the plurality of imagers to the color sample, generating generate a cross-calibration of the modeled response of each of the plurality of imagers to the modeled response of the composite of the plurality of imagers, and generating a calibration of the modeled response of the composite of the plurality of imagers to a response of a reference imager.