Andrive is an application to measure the Time to Headway (THW) for driving evaluation. It was develop under the supervision of Michael Krause from the Institute of Ergonomics at the Technische Universität Müenchen (TUM).

This application is mainly implemented using the OpenCV library. The current version performs

• Rear view vehicle detection.
• Distance calculation using classification region size.
• Speed calculation using GPS.
• THW calculation.

Before installing the application, make sure to have following components:

• Android SDK
• Android NDK
• OpenCV for Android

To start, it is required to set the variables OPENCV_SDK_ROOT and OPENCVSDK. The first variable is used as a project property. Proceed to create a file called local.properties in the project directory and set the variable with the path to your installation of the OpenCV SDK directiry. For example:

OPENCV_SDK_ROOT=../../OpenCV-2.4.10-android-sdk/sdk

The second variable is a environment variable and in case of using Linux can be set trough a console as follows:

$ export OPENCVSDK=/path/to/OpenCV-2.4.10-android-sdk/sdk

After setting the two variable, the next step to build the native code using the ndk-build executable in the NDK installation.

$ /path/to/ndk-build

Then build the application using the ant command in the project directory

$ ant debug

Instead of debug, it can also be build as a release. Finally, install the application on your device with the adb command:

$ adb install -r ./bin/Andrive-debug.apk

NOTE: Any application using the OpenCV library requires you to install also on the device the Android OpenCV Manager.