Title :
A digital image processing method for estimating the level of hydrophobicity of high voltage polymeric insulating materials
Author :
Berg, Marcus ; Thottappillil, Rajeev ; Scuka, Viktor
Author_Institution :
Inst. of High Voltage Res., Uppsala Univ., Sweden
Abstract :
Image analysis of water drop patterns on a flat polymeric insulator surface has been performed in order to find a simple mathematical function that indicates the level of hydrophobicity of an insulator surface. The result, a simple function given the name of “scaled entropy”, seems to correlate well with hydrophobicity as defined by the STRI classification. Some of the various pitfalls in the measurement procedure are identified, together with possible solutions for avoiding them
Keywords :
drops; entropy; image processing; insulation testing; organic insulating materials; polymer structure; polymers; digital image processing method; flat polymeric insulator surface; high voltage polymeric insulating materials; hydrophobicity; image analysis; scaled entropy; water drop patterns; Cameras; Digital images; Face detection; Plastic insulation; Pollution; Polymers; Spraying; Surface contamination; Surface discharges; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.807915
