cv2.dnn.readNetFromDarknet error: Unsupported activation: relu

问题

使用opencv dnn 模块调用darknet模型时候出错，报错信息为 不支持relu激活函数

cv2.dnn.readNetFromDarknet error: (-212:Parsing error) Unsupported activation: relu in function 'cv::dnn::darknet::ReadDarknetFromCfgStream'

解决办法

优化opencv，使得opencv支持 CNN “relu” 和 maxpool “VALID”。

complie

• get opencv

#wget https://codeload.github.com/opencv/opencv/zip/4.0.1   
wget http://www.chineseocr.com:9990/static/models/opencv/opencv.4.0.1.zip    
 
unzip  opencv.4.0.1.zip && 
cp darknet_io.cpp opencv-4.0.1/modules/dnn/src/darknet && 
cp layers_common.cpp opencv-4.0.1/modules/dnn/src/layers && 
cp all_layers.hpp opencv-4.0.1/modules/dnn/include/opencv2/dnn/

mac

cd opencv-4.0.1 && mkdir build && cd build && cmake -D CMAKE_BUILD_TYPE=RELEASE 
    -D CMAKE_INSTALL_PREFIX=/usr/local 
    -D BUILD_opencv_python2=OFF 
    -D BUILD_opencv_python3=ON  
   -D PYTHON3_EXCUTABLE=~/anaconda3/envs/chineseocr/bin/python3 
  -D PYTHON3_INCLUDE_DIR=~/anaconda3/envs/chineseocr/include/python3.6m  
-D PYTHON3_LIBRARY=~/anaconda3/envs/opencv/lib/libpython3.6m.dylib 
-D PYTHON_NUMPY_PATH=~/anaconda3/envs/opencv/lib/python3.6/site-packages/numpy/core/include .. 
&& make -j2 && make install

ubuntu

     -D CMAKE_INSTALL_PREFIX=/usr/local 
    -D BUILD_opencv_python2=OFF 
    -D BUILD_opencv_python3=ON  
   -D PYTHON3_EXCUTABLE=/usr/bin/python 
  -D PYTHON3_INCLUDE_DIR=/usr/include/python3.6m  
-D PYTHON3_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.6m.so 
-D PYTHON_NUMPY_PATH=/usr/local/lib/python3.6/dist-packages/numpy/ .. 
&& make -j2 && make install

参考

• opencv-for-darknet

最后

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