Sammanfattning
Error bounds for estimation of moments from a fuzzy representation of a shape are derived, and compared with estimations from a crisp representation. It is shown that a fuzzy membership function based on the pixel area coverage provides higher accuracy of the estimates, compared to binary Gauss digitization at the same spatial image resolution. Theoretical results are confirmed by a statistical study of disks and squares, where the moments of the shape, up to order two, are estimated from its fuzzy discrete representation. The errors of the estimates decrease both with increased size of a shape (spatial resolution) and increased membership resolution (number of available grey-levels).
Nyckelord
fuzzy sets; moments; accuracy; multigrid resolution
Publicerad i
Lecture Notes in Computer Science
2005, volym: 3617, sidor: 188-195
Utgivare: SPRINGER-VERLAG BERLIN
Konferens
13th International Conference on Image Analysis and Processing
UKÄ forskningsämne
Datorgrafik och datorseende
Publikationens identifierare
- ISBN: 3-540-28869-4
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/8352