INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING DEVICE, AND CONTROL METHOD AND CONTROL PROGRAM THEREFOR, AND COMMUNICATION TERMINAL, AND CONTROL METHOD AND CONTROL PROGRAM THEREFOR

Title:

Document Type and Number:

WIPO Patent Application WO/2013/115203

Kind Code:

A1

Abstract:

Provided is a technology for recognizing an object for study in an image in a video in real time. An object for study, and m number of first local features, which comprise feature vectors having from 1 to i dimensions for each of m number of local regions including m number of feature points in an image of the object for study, are associated and stored. Next, n number of feature points are extracted from an image in a captured video, and n number of second local features, which comprise feature vectors having from 1 to j dimensions for each of n number of local regions including n number of feature points, are generated. The number of dimensions (i) of the first local features or the number of dimensions (j) of the second local features, whichever is the smaller number of dimensions, is selected. The object for study is recognized to be present in the image from the video when a prescribed proportion or more of the m number of first local features up to the selected number of dimensions is determined to correspond to the n number of second local features up to the selected number of dimensions.

Inventors:

NOMURA TOSHIYUKI (JP)
YAMADA AKIO (JP)
IWAMOTO KOTA (JP)
MASE RYOTA (JP)

Application Number:

PCT/JP2013/051954

Publication Date:

August 08, 2013

Filing Date:

January 30, 2013

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Assignee:

NEC CORP (JP)
NOMURA TOSHIYUKI (JP)
YAMADA AKIO (JP)
IWAMOTO KOTA (JP)
MASE RYOTA (JP)

International Classes:

G06T7/00; F21L4/00; G06F17/30

Foreign References:

JP2001101191A	2001-04-13
JP2011198130A	2011-10-06
JP2011008507A	2011-01-13
JP2006053622A	2006-02-23

Other References:

HIRONOBU FUJIYOSHI: "Gradient-Based Feature Extraction -SIFT and HOG", IEICE TECHNICAL REPORT, vol. 107, no. 206, 27 August 2007 (2007-08-27), pages 211 - 224

Attorney, Agent or Firm:

INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)

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