title: A simple method for weight estimation of whole herring (Clupea harengus) using planar X-ray imaging.
abstract: Fish weight is one of the key parameters used in commercial sorting of fresh fish. The capability of on-line and accurate estimation of the weight of each individual fish has a direct impact on profitability for the fish processors. Planar X-ray images of whole herring (n=16) were taken using a commercial medical X-ray apparatus. The integral intensity of all pixels in each image was calculated and correlated with the weight of the respective fish producing a linear relationship with a high correlation factor (R2=0.992) and a calculated mean prediction error of 2.5%. Planar X-ray imaging combined with simple image processing was successfully used to predict weight of whole herring. The technique has a potential to be used industrially for on-line weight estimation in sorting/grading systems.
authors.affiliation: SINTEF Fisheries and Aquaculture, N-7465 Trondheim, Norway.
authors.forename: Emil
authors.initials: E
authors.lastname: Veliyulin
authors.forename: Ekrem
authors.initials: E
authors.lastname: Misimi
authors.forename: Morten
authors.initials: M
authors.lastname: Bondø
authors.forename: Petter Aaby
authors.initials: PA
authors.lastname: Vebenstad
authors.forename: Stein Ove
authors.initials: SO
authors.lastname: Østvik
mesh_terms: D000818:Animals; D001835:Body Weight; D005260:Female; D005398:Fisheries / Q000379:methods; D005399:Fishes / Q000254:growth & development*; D007091:Image Processing, Computer-Assisted; D016014:Linear Models; D008297:Male; D017747:Seafood / Q000191:economics; D051598:Whole Body Imaging; D014965:X-Rays