公开(公告)号：US20170206671A1

公开(公告)日：2017-07-20

申请号：US15327959

申请日：2014-07-22

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

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

IPC: G06T7/37

CPC classification number: G06T7/37 ,  G06T2201/0051 ,  G06T2207/10004 ,  G06T2207/20024 ,  G06T2207/20056 ,  H04N1/4055

Abstract: An example method of rapid image registration includes recovering an affine transform of a quasi-periodic object based on peak locations of Discrete Fourier Transform (DFT) in a captured image. The example method also includes filtering a region of the captured image to match a filtered version of a reference image including the quasi periodic object. The example method also includes recovering translation parameters to reduce image differences between the reference image and the captured image for a subset of the image locations of the filtered image and outputting an approximate transform including translation.

公开(公告)号：US09665813B2

公开(公告)日：2017-05-30

申请号：US14654108

申请日：2013-01-30

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

Inventor： Robert Ulichney ,  Matthew D Gaubatz ,  Steven J Simske

IPC: G06K19/06 ,  G06K19/00 ,  H04N1/32 ,  H04N1/405

CPC classification number: G06K19/00 ,  G06K19/06037 ,  G06K19/06196 ,  H04N1/32144 ,  H04N1/32256 ,  H04N1/32288 ,  H04N1/32293 ,  H04N1/32304 ,  H04N1/4051

Abstract: A data-bearing medium has an array of data-bearing elements. The array of data-bearing elements represents an array of bits. A certain number of the bits repeat within the array of bits. Positions of the bits in each row of the array of bits are circularly shifted from positions of the bits in an immediately preceding row.