EP 0661108 B1 19991103 - Method for optically sorting bulk material
Title (en)
Method for optically sorting bulk material
Title (de)
Verfahren zum optischen Sortieren von Schüttgut
Title (fr)
Procédé de tri optique de matériau en vrac
Publication
Application
Priority
DE 4345106 A 19931228
Abstract (en)
[origin: EP0661108A2] The invention relates to a method for optically sorting bulk material in a colour sorting machine, the material being conveyed by way of a conveyor belt and moving past an observation head having a light source and a product signal receiver arranged in the vicinity of the light source, the reflected light from the image points of the material to be tested being decomposed by means of various coloured filters of adjacent detection elements of a row of the receiver into a plurality of spectral regions and the material to be tested being sorted on the basis of the colour values (measured value of the intensity in the respective colour). According to the invention, to improve the detection rate, it is provided that in the case of material to be tested which is mixed with reject parts, in each case the colour values of the product are investigated in a plurality of selected subregions, in that in each subregion a classifier determines associated areas of image points having colour values falling into the respective subregion and carries out a classification according to predetermined criteria from the geometry and the size of these detection areas. <IMAGE>
IPC 1-7
IPC 8 full level
B07C 5/342 (2006.01)
CPC (source: EP US)
B07C 5/3422 (2013.01 - EP US); B07C 5/366 (2013.01 - EP US); Y10S 209/939 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5586663 A 19961224; AT E186242 T1 19991115; BR 9405268 A 19950919; CA 2136779 A1 19950629; CA 2136779 C 20040406; DE 4345106 A1 19950629; DE 4345106 C2 19951123; DE 59408885 D1 19991209; EP 0661108 A2 19950705; EP 0661108 A3 19970212; EP 0661108 B1 19991103; HK 1013038 A1 19990813; JP 3517292 B2 20040412; JP H08206611 A 19960813
DOCDB simple family (application)
US 36548994 A 19941228; AT 94250285 T 19941125; BR 9405268 A 19941227; CA 2136779 A 19941128; DE 4345106 A 19931228; DE 59408885 T 19941125; EP 94250285 A 19941125; HK 98114163 A 19981221; JP 33871294 A 19941228