emeocv

Read and recognize the counter of an electricity meter with OpenCV.

Prerequisites

• g++, make
• OpenCV 2, 3, 4 (Debian/Ubuntu/Raspbian: apt-get install libopencv-dev) - developed with OpenCV 2.3.1 and later ported to OpenCV 3.2.0 and 4.2.0
• RRDtool (apt-get install rrdtool librrd-dev)
• log4cpp (apt-get install liblog4cpp5-dev)

Build

cd emeocv
make

Usage

emeocv [-i <dir>|-c <cam>] [-l|-t|-a|-w|-o <dir>] [-s <delay>] [-v <level>]

Image input:
    -i <image directory> : read image files (png) from directory.
    -c <camera number> : read images from camera.

Operation:
    -a : adjust camera.
    -o <directory> : capture images into directory.
    -l : learn OCR.
    -t : test OCR.
    -w : write OCR data to RR database. This is the normal working mode.

Options:
    -s <n> : Sleep n milliseconds after processing of each image (default=1000).
    -v <l> : Log level. One of DEBUG, INFO, ERROR (default).

There is a tutorial that explains use case and function of the program: OpenCV practice: OCR for the electricity meter or OpenCV Praxis: OCR für den Stromzähler (in german language).

License

Copyright 2015,2021 Martin Kompf

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.