Image Exercise - Solution¶

In the folder "Working with Images" (same folder this notebook is located in) there are two images we will be working with:

word_matrix.png
mask.png

The word_matrix is a .png image that contains a spreadsheet of words with a hidden message in it.

Your task is to use the mask.png image to reveal the hidden message inside the word_matrix.png. Keep in mind, you may need to resize the mask.png in order for this to work.

This exercise is more open-ended, so we won't guide you with the steps, instead, letting you explore and figure things out on your own as you would in a real world situation. However, if you get stuck, you can always view the solutions video or notebook for guidance. Best of luck!

Import Images¶

In [1]:

from PIL import Image

In [2]:

words = Image.open('word_matrix.png')

In [3]:

words

Out[3]:

In [4]:

mask = Image.open("mask.png")

In [5]:

mask

Out[5]:

Resize Images to Match¶

In [6]:

mask.size

Out[6]:

(505, 251)

In [8]:

words.size

Out[8]:

(1015, 559)

In [12]:

mask = mask.resize((1015,559))

In [13]:

mask.size

Out[13]:

(1015, 559)

Add in alpha parameter¶

Now we can't just paste them over, otherwise we won't see what is underneath, we need to add an alpha value.

In [14]:

mask.putalpha(200)
# links.putalpha(128)

In [15]:

mask

Out[15]:

In [16]:

words.paste(mask,(0,0),mask)

In [17]:

words

Out[17]:

Excellent! Hope you enjoyed this one!