How to load an image and show the image using keras?

This is a image scaling issue. The input to the imshow() expects it to be in the 0-1 range, while you are passing it a [0-255] range input. Try to view it as:

plt.imshow(x/255.)

This question is kind of old, but there is a very comfortable way to display images:

tf.keras.preprocessing.image.array_to_img(image[0]).show()

Your image has to have 3 dimensions (if its in a batch as normally, just take desired_element). Works fine on EagerTensors or numpy arrays.