SetParameterDescription("stereorect","This group of parameters allows to choose direct and inverse grid subsampling. These parameters are very useful to tune time and memory consumption .");
AddParameter(ParameterType_Int,"stereorect.fwdgridstep","Step of the deformation grid (in nb. of pixels)");
AddParameter(ParameterType_Int,"stereorect.fwdgridstep","Step of the deformation grid (in pixels)");
SetParameterDescription("stereorect.fwdgridstep","Stereo-rectification deformation grid only varies slowly. Therefore, it is recommended to use a coarser grid (higher step value) in case of large images");