# Activity 2 - Displaying RGB Color Values for Images

Workshop Resources

### View Images from the Samples

We will now view the image of a shoe from our collection of clothing samples using the code snippet below.

plt.figure()
plt.imshow(train_images) #Shows the first image in the data set as a plot or different colored pixels
plt.colorbar() #displays the color bar on the right
plt.grid(False)
plt.show() #displays the entire plot


#### Question 1:

After analyzing the shoe, we want to view another item from the clothing sample. Can you figure out how to do that using the previous code block?

### Normalize Pixel Values:

The program we’re going to write takes an input of values between 0 and 1. However, our pixel values are mostly all greater than 1! In fact, the range of values is 0 through 255. How can we change the range of numbers such that it can be inputted into our program?

We will use a process called “normalization”, where we transform these values to make them fit in the range of 0 to 1. More specifically, we will take all of our data and divide it by a singular value so that the range of values can now fit within 0 and 1.

#### Question 2:

Can you take a guess of what number we will be dividing our values by to normalize the range?

Copy and paste the following code block into your Google Colab Notebook:

#the train_images and test_images range between values from 0 to 255.
#To maintain consistency between the training and testing set, we will divide train_images and test_images by 255

train_images = train_images / 255.0

test_images = test_images / 255.0