Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4811
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dc.contributor.authorBalaban, Murat Ömer-
dc.contributor.authorChombeau, Melanie-
dc.contributor.authorGümüş, Bahar-
dc.contributor.authorCırban, Dilşat-
dc.date.accessioned2017-02-08T12:30:32Z-
dc.date.available2017-02-08T12:30:32Z-
dc.date.issued2012-01-
dc.identifier.citationBalaban, M. Ö., Chombeau, M., Gümüş, B., and Cırban, D. (2012). Quality evaluation of Alaska pollock (Theragra chalcogramma) roe by image analysis. Part II: Color defects and length evaluation. Journal of Aquatic Food Product Technology, 21(1), 72-85. doi:10.1080/10498850.2011.583378en_US
dc.identifier.issn1049-8850-
dc.identifier.urihttp://doi.org/10.1080/10498850.2011.583378-
dc.identifier.urihttp://hdl.handle.net/11147/4811-
dc.description.abstractIn the second part of the study of the quality evaluation of pollock roe by image analysis, methods to quantify the color defects (green spots, dark strips, dark color, and uneven coloring due to freezer burn) were developed. Dark roes can be detected by their average L* value. Dark strips can be detected by quantifying the percentage of pixels that have an L* value below an L * threshold. Since there is wide variation among the average colors of the roes, this L * threshold value must be auto-adjusting to the color of the individual roe. Green spots can be detected by their darker color and by ignoring red blood vessels by setting an upper a * threshold. In this study, identifying pixels with L* values less than the L * threshold = 66% of the L * average of the roe, and a* values less than an a * threshold = 20 successfully detected dark strips and green spots. Detection and quantification of uneven color and freezer burn required a smoothing of the roe colors to reduce details. The color primitives method was used, with a setting of a color threshold (CT) = 75. The resulting images were analyzed by setting L * threshold values of 60, 65, 70, 75, 80, and 85% of L * average of individual roes. More surface area of the roe was judged as defective with increasing L * threshold. With proper selection of L * threshold, a * threshold, and CT value, image analysis can accurately quantify the color defects of pollock roe. Practical Application Abstract: Automation of pollock roe sorting by color would streamline the operation, reduce error rates, and help with standardization of quality. Combined with other capabilities of machine vision such as sorting by weight, this technology can be used for multiple purposes simultaneously. © 2012 Copyright Taylor and Francis Group, LLC.en_US
dc.language.isoenen_US
dc.publisherTaylor and Francis Ltd.en_US
dc.relation.ispartofJournal of Aquatic Food Product Technologyen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPollock roeen_US
dc.subjectFreezer burnen_US
dc.subjectGreen spoten_US
dc.subjectColor defecten_US
dc.titleQuality evaluation of Alaska pollock (Theragra chalcogramma) roe by image analysis. Part II: Color defects and length evaluationen_US
dc.typeArticleen_US
dc.institutionauthorCırban, Dilşat-
dc.departmentİzmir Institute of Technology. Food Engineeringen_US
dc.identifier.volume21en_US
dc.identifier.issue1en_US
dc.identifier.startpage72en_US
dc.identifier.endpage85en_US
dc.identifier.wosWOS:000302212700008en_US
dc.identifier.scopus2-s2.0-84856882088en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1080/10498850.2011.583378-
dc.relation.doi10.1080/10498850.2011.583378en_US
dc.coverage.doi10.1080/10498850.2011.583378en_US
dc.identifier.wosqualityQ3-
dc.identifier.scopusqualityQ2-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
Appears in Collections:Food Engineering / Gıda Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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