EP 0840882 A2 19980513 - COLOUR MEASURING METHOD AND DEVICE
Title (en)
COLOUR MEASURING METHOD AND DEVICE
Title (de)
VERFAHREN UND VORRICHTUNG ZUR MESSUNG DER FARBE
Title (fr)
PROCEDE ET DISPOSITIF DE MESURE DE LA COULEUR
Publication
Application
Priority
- FR 9700911 W 19970523
- FR 9606425 A 19960523
Abstract (en)
[origin: WO9744642A2] The invention features a colour measuring device comprising: an acquisition system (2, 6) comprising a video-camera (2), and processing means (5) arranged to determine on the basis of the camera-supplied signals the trichromatic components (X, Y, Z) of the colour of the object in a reference colorimetric system (XYZ) using a transfer matrix (M) for switching from the colorimetric system linked to the said acquisition system to the reference colorimetric system and a correction function GAMMA of non-linearities of the said acquisition system.
IPC 1-7
IPC 8 full level
G01J 3/46 (2006.01); G01J 3/50 (2006.01); G06T 5/00 (2006.01); H04N 5/14 (2006.01); H04N 17/04 (2006.01); H04N 17/02 (2006.01)
CPC (source: EP US)
G01J 3/50 (2013.01 - EP US); G01J 3/524 (2013.01 - EP US); H04N 5/142 (2013.01 - EP US); H04N 17/04 (2013.01 - EP US); G01J 3/462 (2013.01 - EP US); G01J 3/465 (2013.01 - EP US); H04N 17/02 (2013.01 - EP US)
Citation (search report)
See references of WO 9744642A2
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9744642 A2 19971127; WO 9744642 A3 19980108; AU 3037597 A 19971209; AU 729262 B2 20010201; CA 2224891 A1 19971127; EP 0840882 A2 19980513; EP 1510799 A1 20050302; FR 2749077 A1 19971128; FR 2749077 B1 19990806; JP 2006276030 A 20061012; JP H11509931 A 19990831; US 2002051097 A1 20020502; US 6362849 B1 20020326
DOCDB simple family (application)
FR 9700911 W 19970523; AU 3037597 A 19970523; CA 2224891 A 19970523; EP 04027392 A 19970523; EP 97925130 A 19970523; FR 9606425 A 19960523; JP 2006156210 A 20060605; JP 54173597 A 19970523; US 34598 A 19980324; US 97292701 A 20011010