update the readme

README.md

@@ -120,6 +120,17 @@ image = pipe(
 image.save('depth-8b.jpg')
 ```
 
+You can use `image_gen_aux` to extract `depth_image`, which contains all the preprocessor required to use with diffusers pipelines. 
+
+```python
+# install image_gen_aux with: pip install git+https://github.com/asomoza/image_gen_aux.git
+from image_gen_aux import DepthPreprocessor
+image = load_image("path to image")
+
+depth_preprocessor = DepthPreprocessor.from_pretrained("depth-anything/Depth-Anything-V2-Large-hf").to("cuda")
+depth_image = depth_preprocessor(image, invert=True)[0].convert("RGB")
+```
+
 ### Preprocessing
 
 An input image can be preprocessed for control use following the code snippet below. SD3.5 does not implement this behavior, so we recommend doing so in an external script beforehand.