In the article for the recognition of digital satellite images, the method of segmentation of views by thresholding was chosen. Two algorithms were used: Laplasian of Gaussian and Canny. The Laplasian of Gaussian algorithm with Gauss low-pass filter smoothes the edges and Laplace's high-pass filter sharpens the image. Based on the calculations made, clear boundaries between individual areas were obtained. The presented application in the MATLAB environment effectively detects forest areas and lakes in the satellite images.
PL
W artykule do rozpoznawania cyfrowych zdjęć satelitarnych wybrano metodę segmentacji zobrazowań przez progowanie. Zastosowano dwa algorytmy: Laplasian of Gaussian i Canny’ego. Algorytm Laplasian of Gaussian z filtrem dolnoprzepustowym Gaussa wygładza krawędzie a filtr górnoprzepustowy Laplace’a wyostrza obraz. Na podstawie przeprowadzonych obliczeń otrzymano wyraźne granice między poszczególnymi obszarami. Przedstawiona aplikacja w środowisku MATLAB skutecznie wykrywa obszary leśne i jeziora na zdjęciach satelitarnych.
In recent years, micro- and nanoplastics (MNPs) in the natural environment have become a severe issue. Therefore, it seems significant to be knowledgeable on the topic. The purpose of the literature review presented here is to describe the general characteristics of plastic particles, their main sources, degradation mechanisms, and the impact of plastic particles on individual systems of the human body. The usefulness and scale of distribution of plastics worldwide is shown, considering the increase in their production in recent years. Up-to-date literature indicates that they may influence the development of cancer, e.g. stomach, liver, or colon cancer. Scientists associate microplastics with the development of cardiovascular and immunological diseases. They also draw attention to the temporal correlation between the increased incidence of the above-civilization diseases and the increased environmental contamination with microplastics in recent decades.
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