Alakzatok, szöveg

        import cv2
        import numpy as np

        img = np.zeros((512,512, 3), np.uint8)

        #img[200:300, 100:150] = 255,0,0

        cv2.line(img, (0,0), (100,300),(0,255,0), 3)
        cv2.rectangle(img, (0,0), (200,300), (0,0,255), 2)
        cv2.circle(img, (400,50), 30, ( 255, 255,0), 5)
        cv2.putText(img, " SZIA ", (300,200), cv2.FONT_HERSHEY_COMPLEX, 1, (0,150,0),3)

        cv2.imshow("Image", img)

        cv2.waitKey(0)