Neuromorphometric characterization with shape functionals

Autor(es)

Barbosa‚ M.S. ; da Fontoura Costa‚ L. ; de Sousa Bernardes‚ E.

• Tipo de documento: Artigo Científico
• Fonte: Physical Review E; v. 67, n. 6, p. 061910, 2003.

Resumo

This work presents a procedure to extract morphological information from neuronal cells based on the variation of shape functionals as the cell geometry undergoes a dilation through a wide interval of spatial scales. The targeted shapes are alpha and beta cat retinal ganglion cells, which are characterized by different ranges of dendritic field diameter. Image functionals are expected to act as descriptors of the shape, gathering relevant geometric and topological features of the complex cell form. We present a comparative study of classification performance of additive shape descriptors, namely, Minkowski functionals, and the nonadditive multiscale fractal. We found that the proposed measures perform efficiently the task of identifying the two main classes alpha and beta based solely on scale invariant information, while also providing intraclass morphological assessment. (AU)

• Processo FAPESP: 96/05497-3 - Pesquisa em visão cibernética
• Beneficiário: Luciano da Fontoura Costa
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 99/12765-2 - Desenvolvimento e avaliação de métodos originais e precisos em análise de formas e imagens e visão computacional
• Beneficiário: Luciano da Fontoura Costa
• Modalidade de apoio: Auxílio à Pesquisa - Temático