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--- products:sbc:vim3:npu:opencv-dnn [2022/10/31 23:53]
frank created
+++ products:sbc:vim3:npu:opencv-dnn [2025/05/14 22:13] (current)
nick
@@ Line 1: / Line 1: @@
-===== OpenCV DNN on NPU =====
+~~tag> VIM3 OpenCV~~
+====== OpenCV DNN Usage ======
+<WRAP important >
+For [[:VIM3]] only, not for [[:VIM3L]].
+</WRAP>
+===== Install Dependencies =====
+Before installing the OpenCV package, you need to install the dependencies.
+```shell
+sudo apt update
+sudo apt install python3 python3-dev python3-numpy cmake libgtk2.0-dev
+```
+===== Install OpenCV =====
+Get the OpenCV package and install it.
+```shell
+wget https://dl.khadas.com/resources/development/opencv_4.8.1.deb
+sudo dpkg -i opencv_4.8.1.deb
+```
+===== Run Test =====
+==== Get demo source ====
+Get the example repository from [[kg>OpenCV_NPU_Demo]].
+```shell
+cd ~
+git clone https://github.com/khadas/OpenCV_NPU_Demo.git
+```
+==== Compile ====
+Compile with cmake tool.
+```shell
+cd ~/OpenCV_NPU_Demo/cpp_demo
+mkdir build && cd build
+cmake ..
+make
+```
+==== Run ====
+After the operation is successful, you can see that the camera has captured the face.
+```shell
+cd ~/OpenCV_NPU_Demo/cpp_demo/build
+./detect-camera 1 ../../model/yunet_int8.onnx
+```
+<WRAP tip >
+For example my cam device node is ''/dev/video1'', 2nd argument must be ''1''
+</WRAP>
+{{products:sbc:vim3:npu:opencv-c.jpeg}}
+===== Quantize Model =====
+We suggest that quantize your model before running on VIM3. If your model performs bad after quantizing, without quantification is okay. Get [[https://github.com/opencv/opencv_zoo/tree/main/tools/quantize|quantized model]]

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