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Automatic nematode detection in cod fillets (Gadus morhua) by transillumination hyperspectral imaging
Agnar Holten Sivertsen1, Karsten Heia, Svein Kristian Stormo
1Nofima Marin, Muninbakken 9-13, Pb 6122, N-9291 Tromsø, Norway. agnarhs@nofima.no
Journal of Food Science
|May 4, 2011
Summary
Transillumination hyperspectral imaging offers automated nematode detection in cod fillets, improving upon manual inspection. Further development is needed to reduce false alarms and increase speed for industrial application.
Area of Science:
- Food science
- Imaging technology
- Aquaculture quality control
Background:
- Manual inspection of cod fillets for nematodes is time-consuming and costly.
- This manual process significantly impacts cod fillet production costs and processing speed.
Purpose of the Study:
- To implement and evaluate transillumination hyperspectral imaging for automatic nematode detection in cod fillets.
- To assess the effectiveness of this technology compared to traditional manual inspection methods.
Main Methods:
- Utilized transillumination hyperspectral imaging on a conveyor belt system.
- Evaluated the system on industrially processed cod fillets, analyzing detection rates for different nematode types.
Main Results:
- Achieved an overall nematode detection rate of 58% (71% for dark, 46% for pale nematodes).
- Detection rates are comparable or superior to manual inspection under industrial conditions.
- Reported a high false alarm rate (60% of fillets), indicating a need for refinement.
Conclusions:
- Transillumination hyperspectral imaging shows promise for automated cod fillet inspection.
- Further research is required to decrease false positives and enhance imaging speed for commercial viability.
