pythonopencvimage-processingmathematical-morphologyimage-morphology

How to make a cross shaped kernel to apply morphological transformations in openCV using python?

I'm a beginner and I don't know how to make a cross shaped kernel in openCV using python? I want to make a 3x3 cross shaped kernel so I can apply morphological transformations to A1, and the kernel being B1.

Here is the picture of what A1 and B1 are.

Here is the picture of what A1 and B1 are.

This is what I have for the kernel but im getting a name error : name 'array' is not defined.

# Cross-shaped kernel (structuring element)
cv.getStructuringElement(cv.MORPH_CROSS,(3,3))
kernel = array ([[0, 1, 0],
                [1, 1, 1],
                [0, 1, 0]], dtype = cv.uint8)
Solution

  • The array function is a part of the numpy. This is how you can create the kernel/array:

    import numpy as np  

kernel = np.array([[0, 1, 0],
                [1, 1, 1],
                [0, 1, 0]], dtype = np.uint8)