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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def bounding_box_as_binary_map(alpha, threshold=0.1):
 """ Similar to `bounding_box`, except returns the bounding box as a binary map the same size as the input. Same parameters as `bounding_box`. Returns ------- binary_map : ndarray, ndim=2, dtype=np.bool_ Binary map with True if object and False if background. """


    bb = bounding_box(alpha)
    x = np.zeros(alpha.shape, dtype=np.bool_)
    x[bb[0]:bb[2], bb[1]:bb[3]] = 1
    return x