Title (de)

ÄHNLICHKEITSBERECHNUNGSVERFAHREN UND EINRICHTUNG

Publication

EP 1521210 B9 20100324 (EN)

Application

EP 03736281 A 20030626

Priority

• JP 0308142 W 20030626
• JP 2002200481 A 20020709

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 KR US)

G06F 17/14 (2013.01 - KR); G06F 17/15 (2013.01 - KR); G06F 18/2131 (2023.01 - EP KR US); G06T 7/00 (2013.01 - KR); G06V 10/7715 (2022.01 - EP US); G06V 20/40 (2022.01 - EP US); H04N 5/91 (2013.01 - KR)

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