python - Adding a border to and Image in my code -


help, need put border on image displayed code below. how do this? code below pulls image, , need border. help.. all of code python

# -*- coding: utf-8 -*- ''' logancaroline_1_4_7: merge images ''' import matplotlib.pyplot plt  import os.path import numpy np      # “as” lets use standard abbreviations  '''read image data''' # directory of python script directory = os.path.dirname(os.path.abspath(__file__))  # build absolute filename directory + filename filename = os.path.join(directory, 'family1.jpg') # read image data array img = plt.imread(filename)  '''show image data''' # create figure 1 subplot fig, ax = plt.subplots(1, 1) # show image data in subplot ax.imshow(img, interpolation='none') # show figure on screen fig.show()

just create larger array black , fill central pixels image. 

import numpy np import matplotlib.pyplot plt  def frame_image(img, frame_width):     b = frame_width # border size in pixel     ny, nx = img.shape[0], img.shape[1] # resolution / number of pixels in x , y     if img.ndim == 3: # rgb or rgba array         framed_img = np.zeros((b+ny+b, b+nx+b, img.shape[2]))     elif img.ndim == 2: # grayscale image         framed_img = np.zeros((b+ny+b, b+nx+b))     framed_img[b:-b, b:-b] = img     return framed_img  img = np.random.rand(456, 333, 3) fig, (ax1, ax2) = plt.subplots(1,2) ax1.imshow(img, interpolation='none') ax2.imshow(frame_image(img, 20), interpolation='none') plt.show()

enter image description here


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