METHOD AND A HAND-HELD DEVICE FOR IDENTIFYING OBJECTS IN A SEQUENCE OF DIGITAL IMAGES BY CREATING BINARIZED IMAGES BASED ON A ADAPTIVE THRESHOLD VALUE - Patent 1449171

(19)

(11)

EP 1 449 171 A1

(12)

(43)	Date of publication:
	25.08.2004 Bulletin 2004/35

(21)	Application number: 02786335.6

(22)	Date of filing: 20.11.2002

(51)	International Patent Classification (IPC)⁷: G06T 7/00, G06K 9/00

(86)	International application number:
	PCT/SE2002/002104

(87)	International publication number:
	WO 2003/044740 (30.05.2003 Gazette 2003/22)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

20.11.2001 SE 0103845

(71)	Applicant: Anoto AB
	223 70 Lund (SE)

(72)	Inventor:
	OLSSON, Andreas S-222 29 Lund (SE)

(74)	Representative: Perklev, Karin Cecilia
	Anoto Group AB,Scheelevägen 19C 223 70 Lund 223 70 Lund (SE)

(54)	METHOD AND A HAND-HELD DEVICE FOR IDENTIFYING OBJECTS IN A SEQUENCE OF DIGITAL IMAGES BY CREATING BINARIZED IMAGES BASED ON A ADAPTIVE THRESHOLD VALUE