ViSP images dataset is not found when installed from debian package

[fspindle]

When ViSP dataset is installed using

$ sudo apt install visp-images-data

ViSP examples and tests are not able to able to find the corresponding data. They are throwing an exception like

$ cd visp-build/example/tracking
$ ./trackDot2
Catch an exception: Error [3]:  Cannot get the environment variable value

A possible workaround is to set VISP_INPUT_IMAGE_PATH environment variable to /usr/share/visp-images-data/ViSP-images

$ export VISP_INPUT_IMAGE_PATH /usr/share/visp-images-data/ViSP-images