Study of Protozoa population in wastewater treatment plants by image analysis

Bibliographic Details
Main Author: Motta, Maurício da
Publication Date: 2001
Other Authors: Pons, M. N., Vivier, H., Amaral, A. L., Ferreira, Eugénio C., Roche, N., Mota, M.
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: https://hdl.handle.net/1822/1532
Summary: Protozoa are important microorganisms taking part to the ecosystem balance in wastewater treatment plants. A procedure for their semi-automated identification and counting based on image analysis is proposed. The main difficulty is the segmentation of the protozoa as most of them are in contact with the sludge. The protozoa are characterized by the size of their silhouette (area and length) and three shape factors (elongation, circularity and eccentricity). They are identified after projecting the resulting 5D space into a 3D space of principal components. The rate of automated identification is actually higher than 50% for some of the species commonly found in activated sludge.
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spelling Study of Protozoa population in wastewater treatment plants by image analysisProtozoaWastewater treatmentImage analysisScience & TechnologyProtozoa are important microorganisms taking part to the ecosystem balance in wastewater treatment plants. A procedure for their semi-automated identification and counting based on image analysis is proposed. The main difficulty is the segmentation of the protozoa as most of them are in contact with the sludge. The protozoa are characterized by the size of their silhouette (area and length) and three shape factors (elongation, circularity and eccentricity). They are identified after projecting the resulting 5D space into a 3D space of principal components. The rate of automated identification is actually higher than 50% for some of the species commonly found in activated sludge.National Council of Scientific and Technological Development of Brazil (CNPq). Embassy of France in Portugal. Instituto de Cooperação Científica e Tecnológica Internacional (ICCTI).Associação Brasileira de Engenharia Química (ABEQ)Universidade do MinhoMotta, Maurício daPons, M. N.Vivier, H.Amaral, A. L.Ferreira, Eugénio C.Roche, N.Mota, M.2001-032001-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/1532eng"Brazilian journal of chemical engineering". ISSN 0104-6632. 18:1 (2001) 103-111.0104-6632info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-11T04:37:10Zoai:repositorium.sdum.uminho.pt:1822/1532Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T14:53:31.635135Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Study of Protozoa population in wastewater treatment plants by image analysis
title Study of Protozoa population in wastewater treatment plants by image analysis
spellingShingle Study of Protozoa population in wastewater treatment plants by image analysis
Motta, Maurício da
Protozoa
Wastewater treatment
Image analysis
Science & Technology
title_short Study of Protozoa population in wastewater treatment plants by image analysis
title_full Study of Protozoa population in wastewater treatment plants by image analysis
title_fullStr Study of Protozoa population in wastewater treatment plants by image analysis
title_full_unstemmed Study of Protozoa population in wastewater treatment plants by image analysis
title_sort Study of Protozoa population in wastewater treatment plants by image analysis
author Motta, Maurício da
author_facet Motta, Maurício da
Pons, M. N.
Vivier, H.
Amaral, A. L.
Ferreira, Eugénio C.
Roche, N.
Mota, M.
author_role author
author2 Pons, M. N.
Vivier, H.
Amaral, A. L.
Ferreira, Eugénio C.
Roche, N.
Mota, M.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Motta, Maurício da
Pons, M. N.
Vivier, H.
Amaral, A. L.
Ferreira, Eugénio C.
Roche, N.
Mota, M.
dc.subject.por.fl_str_mv Protozoa
Wastewater treatment
Image analysis
Science & Technology
topic Protozoa
Wastewater treatment
Image analysis
Science & Technology
description Protozoa are important microorganisms taking part to the ecosystem balance in wastewater treatment plants. A procedure for their semi-automated identification and counting based on image analysis is proposed. The main difficulty is the segmentation of the protozoa as most of them are in contact with the sludge. The protozoa are characterized by the size of their silhouette (area and length) and three shape factors (elongation, circularity and eccentricity). They are identified after projecting the resulting 5D space into a 3D space of principal components. The rate of automated identification is actually higher than 50% for some of the species commonly found in activated sludge.
publishDate 2001
dc.date.none.fl_str_mv 2001-03
2001-03-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/1532
url https://hdl.handle.net/1822/1532
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Brazilian journal of chemical engineering". ISSN 0104-6632. 18:1 (2001) 103-111.
0104-6632
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira de Engenharia Química (ABEQ)
publisher.none.fl_str_mv Associação Brasileira de Engenharia Química (ABEQ)
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833594958456553472

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