Medical images

You are trying to improve the tools of a hospital by pre-processing the X-ray images so that doctors have a higher chance of spotting relevant details. You'll test our code on a chest X-ray image from the National Institutes of Health Chest X-Ray Dataset

First, you'll check the histogram of the image and then apply standard histogram equalization to improve the contrast. Remember we obtain the histogram by using the hist() function from Matplotlib, which has been already imported as plt.