CODEWITHSUNDEEP
pythonopencvimage-processing
ARON
ARON

Reputation: 1

Why do I get the error ValueError: not enough values to unpack (expected 3, got 2)?

This error occurs at the line m,n = A.shape:

ValueError: not enough values to unpack (expected 3, got 2)

I got this message and I don´t know why. It seems that everything is right. Could anyone help me?

image = cv2.resize(image, dsize=(224, 224), interpolation=cv2.INTER_CUBIC)

A = image.copy()/255

m,n = A.shape  #  HERE IS THE PROBLEM

B = np.zeros((m,n));
i = 2
j = 2
for i in range(m-1):
    for j in range(n-1):
        B[i, j] = (A[i-1, j-1]  +A[i-1, j]  +A[i-1, j+1]
                 + A[i,   j-1]  +A[i,   j]  +A[i,   j+1]
                 + A[i+1, j+1]  +A[i+1, j]  +A[i+1, j+1])
        B[i, j] = B[i, j]/9;

Upvotes: 0

Views: 731

Answers (1)

Cris Luengo
Cris Luengo

Reputation: 60444

It appears that your matrix A has three dimensions, not two. This happens, for example, when image is a color image. You might want to use the IMREAD_GRAYSCALE flag to cv.imread to ensure that the image is always read as a grayscale image, and therefore will always have only two dimensions.

Upvotes: 1

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