The study of protozoa population in wastewater treatment plants by image analysis
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100009 |
Resumo: | Protozoa are important microorganisms for 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 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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Brazilian Journal of Chemical Engineering |
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The study of protozoa population in wastewater treatment plants by image analysisProtozoawastewater treatmentimage analysisProtozoa are important microorganisms for 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 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.Brazilian Society of Chemical Engineering2001-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100009Brazilian Journal of Chemical Engineering v.18 n.1 2001reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322001000100009info:eu-repo/semantics/openAccessMotta,M.daPons,M.N.Vivier,H.Amaral,A.L.Ferreira,E.C.Roche,N.Mota,M.eng2001-05-25T00:00:00Zoai:scielo:S0104-66322001000100009Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2001-05-25T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
The study of protozoa population in wastewater treatment plants by image analysis |
title |
The study of protozoa population in wastewater treatment plants by image analysis |
spellingShingle |
The study of protozoa population in wastewater treatment plants by image analysis Motta,M.da Protozoa wastewater treatment image analysis |
title_short |
The study of protozoa population in wastewater treatment plants by image analysis |
title_full |
The study of protozoa population in wastewater treatment plants by image analysis |
title_fullStr |
The study of protozoa population in wastewater treatment plants by image analysis |
title_full_unstemmed |
The study of protozoa population in wastewater treatment plants by image analysis |
title_sort |
The study of protozoa population in wastewater treatment plants by image analysis |
author |
Motta,M.da |
author_facet |
Motta,M.da Pons,M.N. Vivier,H. Amaral,A.L. Ferreira,E.C. Roche,N. Mota,M. |
author_role |
author |
author2 |
Pons,M.N. Vivier,H. Amaral,A.L. Ferreira,E.C. Roche,N. Mota,M. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Motta,M.da Pons,M.N. Vivier,H. Amaral,A.L. Ferreira,E.C. Roche,N. Mota,M. |
dc.subject.por.fl_str_mv |
Protozoa wastewater treatment image analysis |
topic |
Protozoa wastewater treatment image analysis |
description |
Protozoa are important microorganisms for 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 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 |
2001-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322001000100009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322001000100009 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.18 n.1 2001 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213171074170880 |