Inspection of near-infrared spectrum information acquisition method for waste composition estimation

<p>After a large-scale disaster strikes, compositional information (materials and quantities), such as the ratio of flammable waste and non-flammable waste contained in disaster waste, is necessary to formulate a treatment plan and a plan for the layout of temporary treatment facilities for disaster waste accumulated in temporary storage spaces. Therefore, we have begun to develop an estimation method for the material composition of disaster waste accumulated in temporary storage spaces using near-infrared spectral information captured by a hyperspectral camera. Wavelengths in the near-infrared region used for estimating compositional information (materials) includes wavelength ranges where the spectral intensity is attenuated by water vapor in the atmosphere when taking pictures outdoors. Because of this, there is concern that accurate acquisition of spectral intensity outdoors may hinder the estimation of compositional information (material). Accordingly, as a method to solve the problem, we devised and demonstrated a method to add light with a halogen lamp. As a result, it was confirmed that the spectral intensity was not attenuated. From now on, we plan to develop a method to add light when taking pictures outdoors for hyperspectral camera.</p>