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Analysis of aerosol images using the scale-space primal sketch
KTH, Skolan för datavetenskap och kommunikation (CSC), Beräkningsbiologi, CB.ORCID-id: 0000-0002-9081-2170
KTH, Skolan för datavetenskap och kommunikation (CSC), Datorseende och robotik, CVAP.
1991 (engelsk)Inngår i: Machine Vision and Applications, ISSN 0932-8092, E-ISSN 1432-1769, Vol. 4, nr 3, s. 135-144Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We outline a method to analyze aerosol images using the scale-space representation. The pictures, which are photographs of an aerosol generated by a fuel injector, contain phenomena that by a human observer are perceived as periodic or oscillatory structures. The presence of these structures is not immediately apparent since the periodicity manifests itself at a coarse level of scale while the dominating objects inthe images are small dark blobs, that is, fine scale objects. Experimentally, we illustrate that the scale-space theory provides an objective method to bring out these events. However, in this form the method still relies on a subjective observer in order to extract and verify the existence of the periodic phenomena.Then we extend the analysis by adding a recently developed image analysis concept called the scale-space primal sketch. With this tool, we are able to extract significant structures from a grey-level image automatically without any strong a priori assumptions about either the shape or the scale (size) of the primitives. Experiments demonstrate that the periodic drop clusters we perceived in the image are detected by the algorithm as significant image structures. These results provide objective evidence verifying the existence of oscillatory phenomena.

sted, utgiver, år, opplag, sider
1991. Vol. 4, nr 3, s. 135-144
HSV kategori
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URN: urn:nbn:se:kth:diva-58880DOI: 10.1007/BF01230197OAI: oai:DiVA.org:kth-58880DiVA, id: diva2:474270
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NR 20140805Tilgjengelig fra: 2012-01-09 Laget: 2012-01-09 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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