Morhua L.) by hyperspectral imaging

Detection of objects embedded in tissue, using visible light, is dicult due to light scattering. The optical properties of the surrounding tissue will inuence the spectral characteristics of the light interacting with the object, and the spectral signature observed from the object will be directly aected. A method for calibrating the spectral signature of small objects, embedded in translucent material, by the estimated local background spectrum is presented. The method is evaluated under industrial conditions in a new hyperspectral imaging system for automatic detection of nematodes in cod llets. The system operates at a conveyor belt speed of 400 mm/second which meets the industrial required speed of assessing one llet per second.