OpenCV: What is the dimension of the array representing a BGR image?

Question

According to documentation , a BGR image is represented this way in OpenCV:

_{(source: opencv.org )}

My question: what is the dimension of the array displayed by this picture ?

Answer 1

From the docs

Image properties include number of rows, columns and channels, type of image data, number of pixels etc.

Shape of image is accessed by img.shape. It returns a tuple of number of rows, columns and channels (if image is color):

>>> print img.shape
(342, 548, 3)

Note

If image is grayscale, tuple returned contains only number of rows and columns. So it is a good method to check if loaded image is grayscale or color image.