Segmentation of nearly isotropic overlapped tracks in photomicrographs using successive erosions as watershed markers

Autor(es)

de Siqueira, Alexandre Fioravante ^{[1, 2, 3]} ; Nakasuga, Wagner Massayuki ^[2] ; Guedes, Sandro ^[2] ; Ratschbacher, Lothar ^[1]

Afiliação do(s) autor(es)

^[1] TU Bergakad, Inst Geol, Freiberg - Germany

^[2] Univ Estadual Campinas, IFGW, Dept Raios Cosm & Cronol, Campinas, SP - Brazil

^[3] IGDORE, Bali - Indonesia

• Tipo de documento: Artigo Científico
• Fonte: MICROSCOPY RESEARCH AND TECHNIQUE; v. 82, n. 10 JULY 2019.
• Citações Web of Science: 0

Resumo

Introduction Procedures for measuring and counting tracks are time-consuming and involve practical problems. The precision of automatic counting methods is not satisfactory yet; the major challenges are distinguishing tracks and material defects, identifying small tracks and defects of similar size, and detecting overlapping tracks. Materials and Methods Here, we address the overlapping tracks issue using the algorithm Watershed Using Successive Erosions as Markers (WUSEM), which combines the watershed transform, morphological erosions and labeling to separate regions in photomicrographs. We tested this method in two data sets of diallyl phthalate (DAP) photomicrographs and compared the results when counting manually and using the classic watershed and H-watershed transforms. Results The mean automatic/manual efficiency counting ratio when using WUSEM in the test data sets is 0.97 +/- 0.11. Conclusion WUSEM shows reliable results when used in photomicrographs presenting almost isotropic objects. Also, diameter and eccentricity criteria may be used to increase the reliability of this method. (AU)

• Processo FAPESP: 15/24582-4 - Reconhecimento de traços de fissão em fotomicrografias de minerais utilizando a transformada wavelet dual-tree complexa
• Beneficiário: Alexandre Fioravante de Siqueira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 14/22922-0 - Segmentação e reconhecimento de traços de fissão em fotomicrografias de diferentes materiais por meio da transformada wavelet
• Beneficiário: Alexandre Fioravante de Siqueira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado