Global Patent Index - EP 1521210 B9

EP 1521210 B9 20100324 - SIMILARITY CALCULATION METHOD AND DEVICE

Title (en)

SIMILARITY CALCULATION METHOD AND DEVICE

Title (de)

ÄHNLICHKEITSBERECHNUNGSVERFAHREN UND EINRICHTUNG

Title (fr)

PROCEDE ET DISPOSITIF DE CALCUL DE SIMILARITE

Publication

EP 1521210 B9 (EN)

Application

EP 03736281 A

Priority

  • JP 0308142 W
  • JP 2002200481 A

Abstract (en)

[origin: EP1521210A1] In a similarity vector detecting apparatus (2), vector transform units (20), (21) implement transform by sequential matrix, Discrete Cosine Transform, Discrete Fourier Transform, Walsh-Hadamard Transform, or Karhunen-Lueve Transform to registered vector g and input vector f. A hierarchical distance calculating unit (23) performs, in a hierarchical manner, distance calculation between two vectors in order from vector component having high significance, i.e., component having large dispersion or eigen value in the above-described transform operations, or from low frequency component. Further, in the case where it is judged at a threshold value judgment unit (24) that integrated value of distances calculated up to a certain hierarchy is above threshold value S of distance, only output indicating that the integrated value is above the threshold value S is provided to truncate distance calculation. <IMAGE>

IPC 8 full level

G06F 17/14 (2006.01); G06K 9/62 (2006.01); G06F 17/15 (2006.01); G06K 9/68 (2006.01); G06T 7/00 (2006.01); H04N 5/76 (2006.01); H04N 5/91 (2006.01); H04N 5/92 (2006.01)

CPC (source: EP)

G06K 9/00711 (2013.01); G06K 9/6232 (2013.01)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1521210 A1 20050406; EP 1521210 A4 20070704; EP 1521210 B1 20091118; EP 1521210 B9 20100324; EP 1521210 B9 20100915; CN 1324509 C 20070704; CN 1552042 A 20041201; DE 60330147 D1 20091231; JP 2004046370 A 20040212; JP 4623920 B2 20110202; KR 101021044 B1 20110314; KR 20050016278 A 20050221; US 2005033523 A1 20050210; US 7260488 B2 20070821; WO 2004006185 A1 20040115

DOCDB simple family (application)

EP 03736281 A 20030626; CN 03800976 A 20030626; DE 60330147 T 20030626; JP 0308142 W 20030626; JP 2002200481 A 20020709; KR 20047003337 A 20030626; US 48901204 A 20040917