Opencv creates a window - cv.namedWindow()

1, format:

cv.namedWindow(winname[, flags])span>

2. Function:

Create a window

3. Enter:

winname: window name

flags: window creation mode, including:(1)WINDOW_NORMAL or WINDOW_AUTOSIZEWINDOW_NORMAL: Window size is variableWINDOW_AUTOSIZE: The window size is the image size, immutable(2)WINDOW_KEEPRATIO or WINDOW_FREERATIOWINDOW_KEEPRATIO: keep image aspect ratioWINDOW_FREERATIO: Image aspect ratio is variable(3)WINDOW_GUI_EXPANDED or WINDOW_GUI_NORMALWINDOW_GUI_EXPANDED: Window with toolbar and status barWINDOW_GUI_NORMAL: Window without toolbar and status barThe default flags are:WINDOW_AUTOSIZE | WINDOW_KEEPRATIO | WINDOW_GUI_EXPANDED

3. Output:

None

4. Example:

# import OpenCVimport cv2 as cv# read imageimage = cv.imread(r'fire.jpeg')# Create windowcv.namedWindow('image', cv.WINDOW_NORMAL)# show imagecv.imshow('image', image)cv.waitKey(0)

Our image result is: