# draw gt
cv2.rectangle(img, (gt[0], gt[1]), (gt[2], gt[3]), (0,255,0), 1)

The following error occurred while running:

The rectangle function in opencv453 is incompatible with floating-point data  

terms of settlement:

It is OK to convert the two coordinate data types in the rectangle function to int

cv2.rectangle(img, (int(gt[0]), int(gt[1])), (int(gt[2]), int(gt[3])),(0,255,0), 1)