EP 0330684 A4 19891213 - IDENTIFICATION INFORMATION STORAGE AND RETRIEVAL.
Title (en)
IDENTIFICATION INFORMATION STORAGE AND RETRIEVAL.
Title (de)
SPEICHERUNG UND WIEDERAUFFINDUNG VON IDENTIFIZIERUNGSINFORMATION.
Title (fr)
STOCKAGE ET RECHERCHE D'INFORMATIONS D'IDENTIFICATION.
Publication
Application
Priority
US 7649087 A 19870722
Abstract (en)
[origin: WO8900741A1] A method for compressing a face image (62) into a digital bit stream; the method includes the steps of converting the image (62) to an array of raw pixel values; reducing the image (62) to generate a smaller array of pixel values (72); reducing the gray scale range of the pixel values in the smaller array (74); deriving data words indicative of the pixel values (74); and encoding the data words of the bit stream in accordance with the code of the type in which more frequently occurring data words are encoded as shorter sets of bits (76).
IPC 1-7
IPC 8 full level
G06K 17/00 (2006.01); G06T 7/00 (2006.01); G07C 9/00 (2006.01)
CPC (source: EP KR)
G06K 3/00 (2013.01 - KR); G07C 9/247 (2020.01 - EP); G07C 9/253 (2020.01 - EP); G07C 9/257 (2020.01 - EP)
Citation (search report)
- [X] GB 2173970 A 19861022 - MATSUSHITA ELECTRIC WORKS LTD
- [Y] FR 2592197 A1 19870626 - NIXON JOHN [FR]
- [Y] GB 2173933 A 19861022 - STRAIN JOHN
- [XP] EP 0247788 A2 19871202 - NAT BUSINESS SYST [CA]
- [A] DE 3603552 A1 19860807 - RCA CORP [US]
- [Y] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 11A, April 1978, page 4596, New York, US; J.W. KELLEY: "Photo-protected credit card"
- See references of WO 8900741A1
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
WO 8900741 A1 19890126; AU 2126088 A 19890213; BR 8807142 A 19891017; DK 143589 A 19890519; DK 143589 D0 19890322; EP 0330684 A1 19890906; EP 0330684 A4 19891213; JP H02501098 A 19900412; KR 890702156 A 19891223
DOCDB simple family (application)
US 8802503 W 19880722; AU 2126088 A 19880722; BR 8807142 A 19880722; DK 143589 A 19890322; EP 88906636 A 19880722; JP 50632488 A 19880722; KR 890700521 A 19890323