Smart mirror

Smart mirror project running on Raspberry Pi with opencv.

Installation

sudo apt-get install -y libhdf5-dev libhdf5-serial-dev libatlas-base-dev libjasper-dev libqtgui4 libqt4-test
sudo pip3 install Flask
sudo pip3 install opencv-python
wget "https://raw.githubusercontent.com/Mjrovai/OpenCV-Face-Recognition/master/FaceDetection/Cascades/haarcascade_frontalface_default.xml"

Running

git clone https://gitlab.com/RaspberryPiJam/nokia-pi-jam---smart-mirror.git
cd nokia-pi-jam---smart-mirror
echo 'export LD_PRELOAD=/usr/lib/arm-linux-gnueabihf/libatomic.so.1.2.0' >> ~/.bashrc
source ~/.bashrc
export FLASK_APP=server.py
flask run
python3 validate_face_detection.py //validate if your face is detected
python3 gather_data.py //gather your face images
python3 trainer.py //train model on your data
python3 face_recognition.py

Useful commands

ls /dev/ | grep video
lsusb

Solving problems

VIDEOIO ERROR: V4L2: Pixel format of incoming image is unsupported by OpenCV
Unable to stop the stream: Device or resource busy

cv2.VideoCapture is running in loop without releasing

Captured video is blank

Lack of cv2.waitKey method or wrong value

cv2.error: OpenCV(3.4.3) /home/pi/opencv-python/opencv/modules/objdetect/src/cascadedetect.cpp:1698: error: (-215:Assertion failed) !empty() in function 'detectMultiScale'

Xml with face recognition set is provided incorrectly

cv2.error: OpenCV(3.4.3) /home/pi/opencv-python/opencv/modules/core/src/persistence_c.cpp:388: error: (-49:Unknown error code -49) Input file is empty in function 'cvOpenFileStorage'

Content of xml file is invalid

AttributeError: module 'cv2.cv2' has no attribute 'face'

Run python3 -m pip install opencv-contrib-python --upgrade