From 223c504d819c4ef8ff2dae71e7e5b02fdbdaa510 Mon Sep 17 00:00:00 2001
From: MediaPipe Team <mediapipe-team@google.com>
Date: Thu, 16 Feb 2023 20:26:01 -0800
Subject: [PATCH] Add note to installation doc for Debian distros

PiperOrigin-RevId: 510317890
---
 docs/getting_started/install.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/docs/getting_started/install.md b/docs/getting_started/install.md
index 33075749a..17f2dfd45 100644
--- a/docs/getting_started/install.md
+++ b/docs/getting_started/install.md
@@ -67,6 +67,13 @@ install --user six`.
         libopencv-video-dev
     ```
 
+    **Note**. On Debian 11/Ubuntu 21.04 where OpenCV 4.5 is installed with
+    `libopencv-video-dev`, `libopencv-contrib-dev` should also be installed.
+
+    ```bash
+    $ sudo apt-get install -y libopencv-contrib-dev
+    ```
+
     MediaPipe's [`opencv_linux.BUILD`] and [`WORKSPACE`] are already configured
     for OpenCV 2/3 and should work correctly on any architecture: