adds small configuration windows for the ProcessingStep's Dilation and Erosion

Signed-off-by: mrzl <marzzzel@gmail.com>
the processing pipeline configuration window can now be opened via an entry in the menubar

Signed-off-by: mrzl <marzzzel@gmail.com>
the ProcessingStep class now extends QWidget in oder to send/receive signals

Signed-off-by: mrzl <marzzzel@gmail.com>
minor refactoring in the ProcessingPipeline GUI

Signed-off-by: mrzl <marzzzel@gmail.com>
adds some files

Signed-off-by: mrzl <marzzzel@gmail.com>
implements a dialog to change the parameters of the biliteralfilter

Signed-off-by: mrzl <marzzzel@gmail.com>
implements a dialog to change the paramters of the BlackHatStep

Signed-off-by: mrzl <marzzzel@gmail.com>
implements a dialog to change the parameters of the BackgroundSubtractionStep

Signed-off-by: mrzl <marzzzel@gmail.com>
small refactoring

Signed-off-by: mrzl <marzzzel@gmail.com>
exposes the learningrate parameter of the background subtraction

Signed-off-by: mrzl <marzzzel@gmail.com>