Images were collected from the hospital situated in Iran. Part of these CT-scan images of lungs was belonged to lung cancer patients and classified as cancerous images. The rest belonged to other lung diseases, for instance, patients who caught COVID-19, and classified as non-cancerous images. The total number of CT-scan images used in this paper is equal to 364 that 238 of them belong to cancerous images, and 126 of the rest belong to non-cancerous images. All of these images were collected by the help of a pulmonologist to skip any probable error in classifying images.