Merge pull request AUTOMATIC1111#30 from shirayu/add_auto_dependency_install

Auto install opencv-python if not installed

Author: Mikubill

README.md

@@ -17,8 +17,6 @@ Thanks & Inspired: kohya-ss/sd-webui-additional-networks
 
 ### Install
 
-Some users may need to install the cv2 library before installing it: `pip install opencv-python`
-
 Install prettytable if you want to use img2seg preprocessor: `pip install prettytable`
 
 1. Open "Extensions" tab.

install.py

@@ -0,0 +1,4 @@
+import launch
+
+if not launch.is_installed("opencv-python"):
+    launch.run_pip("install opencv-python", "requirement for sd-webui-controlnet")