SCN filter size is now a command-line input parameter
Bug fix (two image windows with same name)
Added 16 px on the right hand side (2 px per cell) for scan
Fix bug (wrong constrains to <y>) and clean up code with <delta>
Implemented disparity map computation with <nn.SpatialComvolution>
Added option for loading couple of images (i.e. stereo camera not available)

<imgFileName> specifies the <name> of the couple of images that have to be
loaded. The format of the name should be <name{R,L}.ext>, where <ext> can be
whatever image format Torch supports.