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    SOLVED Face Recognition - File can't be opened for writing

    Troubleshooting
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    • F
      feuerball last edited by paviro

      Well the Mirror and the modules are working for now.

      The next step is to seperate modules to specific users so i use the FaceRec lib.

      I trained 10 images first for a quick test.
      When im trying to start MMv2 with this module he pushes this error message:

      [MMM-Facial-Recognition] Facerecognition started...
      [MMM-Facial-Recognition] Loading training data...
      [MMM-Facial-Recognition] ALGORITHM: LBPH
      Whoops! There was an uncaught exception...
      { [Error: OpenCV Error: Unspecified error (File can't be opened for writing!) in load, file /build/opencv-ISmtkH/opencv-2.4.9.1+dfsg/modules/contrib/src/facerec.cpp, line 325
      Traceback (most recent call last):
        File "modules/MMM-Facial-Recognition/facerecognition/facerecognition.py", line 59, in <module>
          model.load(json.loads(sys.argv[1])["trainingFile"])
      cv2.error: /build/opencv-ISmtkH/opencv-2.4.9.1+dfsg/modules/contrib/src/facerec.cpp:325: error: (-2) File can't be opened for writing! in function load
      >]
        executable: 'python',
        options: null,
        script: 'modules/MMM-Facial-Recognition/facerecognition/facerecognition.py',
        args: [ '{"recognitionAlgorithm":1,"lbphThreshold":50,"fisherThreshold":250,"eigenThreshold":3000,"useUSBCam":false,"trainingFile":"~/MagicMirror/modules/MMM-Facial-Recognition/training.xml","interval":1,"logoutDelay":15,"users":["Marvin"],"defaultClass":"default","forAllClass":"for_all"}' ],
        exitCode: 1 }
      MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
      If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
      
      1 Reply Last reply Reply Quote 0
      • KirAsh4
        KirAsh4 Moderator last edited by

        Looks like it doesn’t have permission to open your trainingFile:

        model.load(json.loads(sys.argv[1])[“trainingFile”])
        cv2.error: /build/opencv-ISmtkH/opencv-2.4.9.1+dfsg/modules/contrib/src/facerec.cpp:325: error: (-2) File can’t be opened for writing! in function load
        

        Notice the File can't be opened for writing message.

        Wherever it’s trying to create that file, the main process running MM can’t write to that location.

        1 Reply Last reply Reply Quote 0
        • paviro
          paviro Admin last edited by

          Probably it does not even exist in that path. Be sure to add the training file path to the conduct of put it in the module folder.

          1 Reply Last reply Reply Quote 0
          • F
            feuerball last edited by

            The XML file is located in the module path mmm-facial-recognition.
            I will answer more precisely when I’m back hat home

            1 Reply Last reply Reply Quote 0
            • F
              feuerball last edited by feuerball

              So, my internet is back after a day 😃

              I reinstalled the module with deleting & cloning it again.

              The training.xml is located in

              /home/pi/MagicMirror/modules/MMM-Facial-Recognition

              I installed open cv with

              sudo apt-get install libopencv-dev python-opencv

              after this, i went into the folder

              MMM-Facial-Recognition

              and typed

              sudo npm install

              I still get the same error MSG 😞

              i also changed the rights on the training.xml to Anyone/Anyone/Anyone

              please help ❤

              paviro 1 Reply Last reply Reply Quote 0
              • paviro
                paviro Admin @feuerball last edited by

                @feuerball try putting it somewhere else and set the trainingFile setting in your config 🙂

                1 Reply Last reply Reply Quote 1
                • F
                  feuerball last edited by

                  well i rewrote the destination of the file @ the config again and now it works.

                  seems like there was an error anywhere 😃

                  thanks 🙂

                  P 1 Reply Last reply Reply Quote 0
                  • P
                    pgb168 @feuerball last edited by

                    @feuerball I didn’t understand what is the config

                    I am having the same error

                    1 Reply Last reply Reply Quote 0
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