Specificity of agrophysical investigations consists between other in diversity and complexity of investigated objects, e.g. soil or tissue of fruits are complicated, biologically active, three-phase objects, which possess specific heat and water properties. Studies of such objects requires the application of modern measuring methods, which make it possible to objectively determine examined features and physical quantities. In the Institute of Agrophysics PAN in Lublin the studies of the bioenergetic status of agricultural products are conducted with the use of active thermography and hyperspectral systems to determine quality parameters of these products and possibility of their use as a source of renewable energy. The Institute’s strategic goal is to conduct research study, basic and applied, in the area of applications of physics to provide timely and relevant information addressing quality of environment, sustainable agriculture and postharvest processing. This paper presents the results of studies conducted with the use of the hyperspectral system of fruit and vegetable sorting, which is equipped with sensors working in ranges of visible light (400-700 nm), near infrared (1000 – 2500 nm) and middle infrared (3500-5000 nm). This contribution presents the application of this hyperspectral system in early detection of mechanical failures and disease changes of the tissue in fruits and vegetables. The analysis of registered images make it possible to automatically select the areas with various defects of the tissue. The analysis of the fast Fourier analysis of obtained image sequences enabled to get information not only about the area size of the negative changes but also about the depth of damaged tissues.
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