Load Numpy arrays of incompatible dtypes

src/flash/core/data/utilities/loading.py

@@ -72,7 +72,13 @@ def _load_image_from_image(file):
 
 
 def _load_image_from_numpy(file):
-    return Image.fromarray(np.load(file).astype("uint8")).convert("RGB")
+    arr = np.load(file)
+    if not (arr == arr.astype("uint8")).all():
+        # Max pixel value -> 255, min -> 0
+        low = arr.min()
+        arr = 255 * (arr - low) / (arr.max() - low)
+
+    return Image.fromarray(arr.astype("uint8")).convert("RGB")
 
 
 def _load_spectrogram_from_image(file):