In content-based image retrieval a major problem is the presence of noisy shapes. It is well known that persistent Betti numbers area shape descriptor that admits a dissimilarity distance, the matchingdistance, stable under continuous shape deformations. In this paper wefocus on the problem of dealing with noise that changes the topologyof the studied objects. We present a general method to turn persistentBetti numbers into stable descriptors also in the presence of topologicalchanges. Retrieval tests on the Kimia-99 database show the effectivenessof the method.

Persistent Betti Numbers for a Noise Tolerant Shape-Based Approach to Image Retrieval / P., Frosini; Landi, Claudia. - STAMPA. - 6854:(2011), pp. 294-301. ((Intervento presentato al convegno Computer Analysis of Images and Patterns (CAIP 2011) tenutosi a Siviglia (Spagna) nel 29-31 agosto 2011 [10.1007/978-3-642-23672-3_36].

Persistent Betti Numbers for a Noise Tolerant Shape-Based Approach to Image Retrieval

LANDI, Claudia
2011

Abstract

In content-based image retrieval a major problem is the presence of noisy shapes. It is well known that persistent Betti numbers area shape descriptor that admits a dissimilarity distance, the matchingdistance, stable under continuous shape deformations. In this paper wefocus on the problem of dealing with noise that changes the topologyof the studied objects. We present a general method to turn persistentBetti numbers into stable descriptors also in the presence of topologicalchanges. Retrieval tests on the Kimia-99 database show the effectivenessof the method.
Computer Analysis of Images and Patterns (CAIP 2011)
Siviglia (Spagna)
29-31 agosto 2011
6854
294
301
P., Frosini; Landi, Claudia
Persistent Betti Numbers for a Noise Tolerant Shape-Based Approach to Image Retrieval / P., Frosini; Landi, Claudia. - STAMPA. - 6854:(2011), pp. 294-301. ((Intervento presentato al convegno Computer Analysis of Images and Patterns (CAIP 2011) tenutosi a Siviglia (Spagna) nel 29-31 agosto 2011 [10.1007/978-3-642-23672-3_36].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/667245
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