utility.py

import skimage.io as io
import matplotlib.pyplot as plt
import numpy as np

# Show the figures / plots inside the notebook
def show_images(images,titles=None):
    #This function is used to show image(s) with titles by sending an array of images and an array of associated titles.
    # images[0] will be drawn with the title titles[0] if exists
    # You aren't required to understand this function, use it as-is.
    n_ims = len(images)
    if titles is None: titles = ['(%d)' % i for i in range(1,n_ims + 1)]
    fig = plt.figure()
    n = 1
    for image,title in zip(images,titles):
        a = fig.add_subplot(1,n_ims,n)
        if image.ndim == 2: 
            plt.gray()
        plt.imshow(image)
        a.set_title(title)
        n += 1
    fig.set_size_inches(np.array(fig.get_size_inches()) * n_ims)
    plt.show() 

#############################################################################

def vertical_histogram(img):
    return np.sum(img, axis=0)

#############################################################################

def horizontal_histogram(img):
    return np.sum(img, axis=1)