add img helpers

Author: karolzak

ipyplot/img_helpers.py

@@ -0,0 +1,20 @@
+def resize_with_aspect_ratio(img, max_size=1000):
+    """Helper function to resize image against the longer edge
+
+    Args:
+        img (PIL.Image):
+            Image object to be resized
+        max_size (int, optional):
+            Max size of the longer edge in pixels.
+            Defaults to 2800.
+
+    Returns:
+        PIL.Image:
+            Resized image object
+    """
+    w, h = img.size
+    aspect_ratio = min(max_size/w, max_size/h)
+    resized_img = img.resize(
+        (int(w * aspect_ratio), int(h * aspect_ratio))
+    )
+    return resized_img