EP 2704855 A2 20140312 - MARKING METHODS, APPARATUS AND SYSTEMS INCLUDING OPTICAL FLOW-BASED DEAD RECKONING FEATURES
Title (en)
MARKING METHODS, APPARATUS AND SYSTEMS INCLUDING OPTICAL FLOW-BASED DEAD RECKONING FEATURES
Title (de)
MARKIERUNGSVERFAHREN, -VORRICHTUNGEN UND -SYSTEME MIT AUF OPTISCHER STRÖMUNG BERUHENDEN KOPPLUNGSFUNKTIONEN
Title (fr)
PROCÉDÉS, APPAREIL ET SYSTÈMES DE MARQUAGE COMPRENANT DES CARACTÉRISTIQUES ESTIMÉES EN FONCTION DE FLUX OPTIQUE
Publication
Application
Priority
- US 201161481539 P 20110502
- US 201113236162 A 20110919
- US 2012036198 W 20120502
Abstract (en)
[origin: WO2012151333A2] A position of a marking device is monitored by receiving start position information indicative of an initial position of the marking device, capturing one or more images using one or more camera systems attached to the marking device, and analyzing the image(s) to determine tracking information indicative of a motion of the marking device. The tracking information and the start position information are then analyzed to determine current position information. In one example, images of a target surface over which the marking device is carried are analyzed pursuant to an optical flow algorithm to provide estimates of relative position for a dead-reckoning process, and the current position information is determined based on the estimates of relative position and the start position information. In another example, a geo-location device is used to generate geo-location data indicative of positions of the marking device as it traverses at least a first portion of the path. The camera system(s) are used to obtain optical flow-based dead reckoning data indicative of relative positions of the marking device as it traverses at least a second portion of the path.
IPC 8 full level
B05C 11/00 (2006.01); B05D 5/06 (2006.01); G01C 15/06 (2006.01); G01S 5/16 (2006.01); G06T 7/20 (2006.01)
CPC (source: EP)
G01C 15/06 (2013.01); G06T 7/20 (2013.01); G01S 5/16 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012151333 A2 20121108; WO 2012151333 A3 20130103; AU 2012250766 A1 20131219; CA 2838328 A1 20121108; EP 2704855 A2 20140312; EP 2704855 A4 20141119
DOCDB simple family (application)
US 2012036198 W 20120502; AU 2012250766 A 20120502; CA 2838328 A 20120502; EP 12779689 A 20120502