Face Recognition - File can't be opened for writing

feuerball

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 
    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

KirAsh4

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.

paviro

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.

feuerball

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

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

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

feuerball

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

seems like there was an error anywhere

thanks

pgb168

@feuerball I didn’t understand what is the config

I am having the same error