Update README.md

README.md

@@ -47,6 +47,8 @@ configs:
 ## Quick Start
 ### Usage
 ```python
+>>> from datasets.load import load_dataset
+
 >>> dataset = load_dataset('whyen-wang/mnist')
 >>> example = dataset['train'][0]
 >>> print(example)
@@ -56,6 +58,20 @@ configs:
 
 ### Visualization
 ```
+>>> import cv2
+>>> import numpy as np
+>>> from PIL import Image
+
+>>> def visualize(example):
+    image = np.array(example['image'])
+    image = cv2.resize(image, (280, 280))
+    cv2.putText(
+        image, str(example['label']), (0, 50), cv2.FONT_HERSHEY_SIMPLEX,
+        2, (255), 1, cv2.LINE_AA, False
+    )
+    return image
+
+>>> Image.fromarray(example)
 ```