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https://github.com/samie/trollator

Simple example of using OpenCV in a Vaadin application.
https://github.com/samie/trollator

opencv vaadin-application vaadin7

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Simple example of using OpenCV in a Vaadin application.

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# Vaadin OpenCV sample application
Simple example of using OpenCV in a Vaadin application.

This application takes a picture using web browsers camera API (available in modern browsers)
and runs OpenCV face recognition algorithm (using [CascadeClassifier](http://docs.opencv.org/java/org/opencv/objdetect/CascadeClassifier.html) ) for it. If a face is detected a "troll face" is added on top of it.

![Screenshot](/screenshot.png?raw=true "Screenshot")

This application was inspired by the ingenious ["Trollator" mobile Android application](https://play.google.com/store/apps/details?id=com.fredagapps.android.trollator).

You can find a blog post about installing [OpenCV for Java and Maven in my Dzone article](http://java.dzone.com/articles/combining-html-web).

1. OpenCV Installation for local Maven repository
---
OpenCV is a native library with Java bindings so you need to install this to your system.
- *libopencv_java300.so* installed in you java.library.path (
- *opencv-300.jar* availble for application

There are good instructions how to build OpenCV with Java bindings for your own platform here: http://docs.opencv.org/doc/tutorials/introduction/desktop_java/java_dev_intro.html

Once you have built the Java library you can install the resulting jar file to your local Maven repository using
mvn install:install-file -Dfile=./bin/opencv-300.jar \
-DgroupId=org.opencv -DartifactId=opencv -Dversion=3.0.0 -Dpackaging=jar

2. Building this application
----
Once OpenCV jar library is available as a local Maven dependency, you can clone and build this application simply using Git and Maven:

git clone https://github.com/samie/trollator.git
mvn install

And run the application using the embedded Jetty plugin in http://localhost:8888

mvn jetty:run