PYTHON-OPENCV drawing a drawing

Document Link: https://docs.opencv.org/trunk/dc/da5/tutorial_py_drawing_functions.html

The documentation describes several of the drawing features of OpenCV:

Draw a Circle

Draw a rectangle

Draw a line

Draw Ellipse

Drawing polygons

Draw text

To draw a line to illustrate:

ImportCv2ImportNumPy as NP fromMatplotlibImportPyplot as Pltgray= Np.zeros ((512,512), np.uint8)#generate an empty grayscale imageCv2.line (Gray, (0,0), (511,511), 255,5) RGB= Np.zeros ((512,512,3), np.uint8)#generate an empty color imageCv2.line (RGB, (0,0), (511,511), (255,0,155), 5) Plt.subplot (121) Plt.imshow (Gray,'Gray') Plt.subplot (122) plt.imshow (RGB) plt.show ()

Effect:

PYTHON-OPENCV drawing a drawing