AUTOMATIC DETERMINATION OF ASBESTOS AND OTHER MINERAL FIBRES

Ziel

IDENTIFICATION OF MINERAL FIBROUS PARTICLES AND CLASSIFICATION ACCORDING TO THEIR DIMENSIONS AND TYPE.

THE RESEARCH PROJECT IS IMPLEMENTED IN TWO PHASES:

1. PRE-PROCESSING

THE IDENTIFICATION OF FIBRES IS FEASIBLE AFTER ADEQUATE PRE-PROCESSING. COMPUTING CAPABILITY HAS BEEN EXTENDED BOTH IN QUALITY AND SPEED SINCE THE COMPLETION OF THE DELFT IMAGE PROCESSOR (DIP), A COMPUTED SYSTEM SPECIALLY DESIGNED AND BUILT FOR FAST LINEAR AND NON-LINEAR FILTERING. THIS SYSTEM ALLOWS OPERATIONS LIKE DELINERATION OF THE PARTICLES (SEGMENTATION), ETCHING (EROSION) AND THICKENING (DILATION) OF THEIR SILHOUETTES.

2. DECOMPOSITION OF COMPLEX STRUCTURES

THE TYPICAL FIBRE SHAPE CAN BE EXPLOITED THROUGH THE HOUGH TRANSFORM TECHNIQUE, WHICH IS MAINLY SENSITIVE TO LONG STRAIGHT STRUCTURES. IN ORDER TO IMPROVE SELECTIVITY, THE ORIENTATION OF THE PARTICLE BORDERS IS TAKEN INTO ACCOUNT AS A WEIGHTING FACTOR.

THIS METHOD CAN BE COMBINED WITH THE LINE-TRACKING METHOD, IN WHICH A FIBRE IS ROUGHLY FOLLOWED THROUGH THE IMAGE. DURING THIS PROCESS INFORMATION OF THE FIBRE BUILDS UP GRADUALLY AND ENABLES JUMPING ACROSS COMPLICATED AREAS.

Programm/Programme

PRE-ENVPROT 3C - Sectoral research and development programme (EEC) in the field of environment (environmental protection and climatology) - indirect and concerted actions - Environmental protection -, 1981-1985

Thema/Themen

Data not available

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

CSC - Cost-sharing contracts

Koordinator

Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek

EU-Beitrag

Keine Daten

Adresse

97,Schoenmakerstraat
2600 JA Delft
Niederlande

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