title: Comparison of a multispectral vision system and a colorimeter for the assessment of meat color.
abstract: The color assessment ability of a multispectral vision system is investigated by a comparison study with color measurements from a traditional colorimeter. The experiment involves fresh and processed meat samples. Meat is a complex material; heterogeneous with varying scattering and reflectance properties, so several factors can influence the instrumental assessment of meat color. In order to assess whether two methods are equivalent, the variation due to these factors must be taken into account. A statistical analysis was conducted and showed that on a calibration sheet the two instruments are equally capable of measuring color. Moreover the vision system provides a more color rich assessment of fresh meat samples with a glossier surface, than the colorimeter. Careful studies of the different sources of variation enable an assessment of the order of magnitude of the variability between methods accounting for other sources of variation leading to the conclusion that color assessment using a multispectral vision system is superior to traditional colorimeter assessments.
authors.affiliation: Technical University of Denmark, Richard Petersens Plads, 2800 Kongens Lyngby, Denmark. Electronic address: ctri@dtu.dk.
authors.forename: Camilla H
authors.initials: CH
authors.lastname: Trinderup
authors.affiliation: Technical University of Denmark, Richard Petersens Plads, 2800 Kongens Lyngby, Denmark. Electronic address: abda@dtu.dk.
authors.forename: Anders
authors.initials: A
authors.lastname: Dahl
authors.affiliation: Danish Meat Research Institute, Maglegå rdsvej 2, 4000 Roskilde, Denmark. Electronic address: kij@teknologisk.dk.
authors.forename: Kirsten
authors.initials: K
authors.lastname: Jensen
authors.affiliation: Technical University of Denmark, Richard Petersens Plads, 2800 Kongens Lyngby, Denmark; Videometer A/S, Lyngsø Alle 3, 2970 Hørsholm, Denmark. Electronic address: jmc@videometer.com.
authors.forename: Jens Michael
authors.initials: JM
authors.lastname: Carstensen
authors.affiliation: Technical University of Denmark, Richard Petersens Plads, 2800 Kongens Lyngby, Denmark. Electronic address: knco@dtu.dk.
authors.forename: Knut
authors.initials: K
authors.lastname: Conradsen
mesh_terms: D000465:Algorithms; D000818:Animals; D002138:Calibration; D002417:Cattle; D003116:Color; D003124:Colorimetry / Q000295:instrumentation; D003718:Denmark; D005513:Food Inspection / Q000379:methods*; D063427:Food Quality; D008460:Meat / Q000032:analysis*; D008461:Meat Products / Q000032:analysis*; D010860:Pigments, Biological / Q000032:analysis*; D013223:Statistics as Topic; D013499:Surface Properties; D034421:Sus scrofa; D014422:Turkeys
chemical_list: D010860:Pigments, Biological
keywords: Color; Colorimeter; Meat; Multispectral; Reflectance properties; Variance component analysis