[SOLVED] OpenCV error while reszing new created window is there any other way to do it?

OpenCV error while reszing new created window is there any other way to do it?

cv2.namedWindow("Trackbars")
cv2.resize("Trackbars", 640 ,420)
cv2.createTrackbar("Hue Min","Trackbars",0,179,empty)

I am using this code to create and resize the new window but its showing giving me following error: what am doing wrong here ?

Overload resolution failed:

src is not a numpy array, neither a scalar

Expected Ptr<cv::UMat> for argument 'src'

what is wrong here ?

Solution

There are two slightly different ways to do this.

I would recommend changing resize to resizeWindow. cv2.WINDOW_KEEPRATIO keeps the correct ratio of an image (if you have one).

cv2.namedWindow("Trackbars", cv2.WINDOW_KEEPRATIO)
cv2.resizeWindow("Trackbar", 640, 420)

You could also resize the window in a ratio form instead of a specific pixel - this is if you have the media input as a variable (image).

cv2.resize(frame, (0,0), fx=0.4, fy=0.4)