Question: Use convolution with Sobel filters to compute the image gradient at each pixel. Args: image _ bw: A numpy array of shape ( M ,

Use convolution with Sobel filters to compute the image gradient at each
pixel.
Args:
image_bw: A numpy array of shape (M,N) containing the grayscale image
Returns:
Ix: Array of shape (M,N) representing partial derivatives of image
w.r.t. x-direction
Iy: Array of shape (M,N) representing partial derivative of image
w.r.t. y-direction

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