Update README.md

README.md

@@ -111,5 +111,26 @@ def check_answer(
 ```
 
 
+If you'd like to use a single image model, here's a handy function to turn `image_1` and `image_2` into a single split image:
+
+```python
+def concat_images_horizontal(
+        image1: Image.Image, image2: Image.Image, include_space: bool=True, space_width: int=20, fill_color: tuple=(0, 0, 0)
+        )  -> Image.Image:
+    # from https://note.nkmk.me/en/python-pillow-concat-images/
+    if not include_space:
+        dst = Image.new("RGB", (image1.width + image2.width, image1.height))
+        dst.paste(image1, (0, 0))
+        dst.paste(image2, (image1.width, 0))
+    else:
+        total_width = image1.width + space_width + image2.width
+        max_height = max(image1.height, image2.height)
+
+        dst = Image.new("RGB", (total_width, max_height), color=fill_color)
+        dst.paste(image1, (0, (max_height - image1.height) // 2))
+        dst.paste(image2, (image1.width + space_width, (max_height - image2.height) // 2))
+    return dst
+```
+
 For more details about Common-O see the [dataset card](https://huggingface.co/datasets/facebook/Common-O/blob/main/COMMON_O_DATASET_CARD.md)