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emeocv

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Read and recognize the counter of an electricity meter with OpenCV

// repository documentation

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emeocv
======

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

![OpenCV for the electricity meter](http://www.kompf.de/cplus/images/emeocv_m.png)

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`)
* imagemagick (optional, only needed to display graphs)

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](https://en.kompf.de/cplus/emeocv.html) or
[OpenCV Praxis: OCR für den Stromzähler](https://www.kompf.de/cplus/emeocv.html) (in german language).

License
=======

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/>.

emeocv

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