I have a problem with the following code:
import cv2
import matplotlib.pyplot as plt
img1 = cv2.imread('images\colombia_city.jpg')
img2 = cv2.imread('images\colombia_city_2.jpg')
#img = img1 + img2
#img = cv2.add(img1,img2)
abc = cv2.addWeighted(img1,0.7,img2,0.3,55)
plt.imshow(abc)
plt.show()
plt.title("Weighted"); plt.axes()
plt.waitforbuttonpress()
According to Visual Studio the problem is in
plt.imshow (abc)
But when I try the program in another IDE, this runs normally
The first possibility in which you have to think about these cases because it is the simplest and most common is that you are not passing a correct path to cv2.imread .
Interestingly, if cv2.imread does not receive a correct route, it does not bother to throw an exception or a misnomer, simply returns None . In this case two images are used, if only one of the routes was incorrect the code would throw an exception, but in abc = cv2.addWeighted(img1,0.7,img2,0.3,55) because it is with an array on one side and None on the other and that if not It looks good and tells us something like:
The operation is neither 'array op array' (where arrays have the same size and the same number of channels), nor 'array op scalar', nor 'scalar op array' in function cv :: arithm_op
But if both routes are wrong cv2.addWeighted does not fail, it just returns another None . This is when plt.imshow reaches an object None and as expects an array of floats throws the exception shown:
TypeError: Image data can not convert to float
To rule out this possibility we can do the following:
import cv2
import matplotlib.pyplot as plt
img1 = cv2.imread(r"images\colombia_city.jpg")
img2 = cv2.imread(r"images\colombia_city.jpg")
assert(img1 is not None), "img1 no existe, compruebe la ruta"
assert(img2 is not None), "img2 no existe, compruebe la ruta"
abc = cv2.addWeighted(img1,0.7,img2,0.3,55)
plt.imshow(img1)
plt.title("Weighted")
plt.axes()
plt.show()
Note: When routes are passed,
\should not be used as a directory separator. The inverse bar (\) indicates an escape sequence, which implies that, for example, in"imagenes\nueva.jpg"the set\nis taken as a line break. Instead you should use raw strings (r"imagenes\nueva.jpg"), escape the backslash ("imagenes\nueva.jpg") or use the Unix-like style"imagenes/nueva.jpg"