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--- products:sbc:vim3:npu:opencv-dnn [2023/05/09 23:27]
nick
+++ products:sbc:vim3:npu:opencv-dnn [2025/05/14 22:13] (current)
nick
@@ Line 1: / Line 1: @@
+~~tag> VIM3 OpenCV~~
 ====== OpenCV DNN Usage ======
 <WRAP important >
-Just use for VIM3, not in VIM3L.
+For [[:VIM3]] only, not for [[:VIM3L]].
 </WRAP>
@@ Line 19: / Line 21: @@
 ```shell
-wget https://dl.khadas.com/development/opencv-4.7-2.deb
+wget https://dl.khadas.com/resources/development/opencv_4.8.1.deb
-sudo dpkg -i opencv-4.7-2.deb
+sudo dpkg -i opencv_4.8.1.deb
 ```
 ===== Run Test =====
-==== Get Demo Source ====
+==== Get demo source ====
-Get the example repository from Github.
+Get the example repository from [[kg>OpenCV_NPU_Demo]].
 ```shell
@@ Line 51: / Line 53: @@
 ```shell
 cd ~/OpenCV_NPU_Demo/cpp_demo/build
-./detect-camera 1 ../../model/yunet_int8.onnx # My cam is /dev/video1, so there is 1
+./detect-camera 1 ../../model/yunet_int8.onnx
 ```
-{{products:sbc:vim3:npu:opencv-c.jpeg}}
+<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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