ENH: begin to enrich module app command line interface

app/otbLSGRM.cxx

@@ -54,8 +54,8 @@ private:
 
   AddParameter(ParameterType_Float, "threshold", "Threshold for the criterion");
 
-  AddParameter(ParameterType_Int, "niter", "Number of iterations");
-  SetDefaultParameterInt("niter", 0);
+  AddParameter(ParameterType_Int, "niter", "Maximum number of iterations");
+  SetDefaultParameterInt("niter", 75);
   MandatoryOff("niter");
 
   AddParameter(ParameterType_Int, "speed", "Activate it to boost the segmentation speed");
@@ -113,6 +113,7 @@ private:
       }
     else
       {
+      // User
       controller.SetTileWidth(GetParameterInt("tiling.user.sizex"));
       controller.SetTileHeight(GetParameterInt("tiling.user.sizey"));
       controller.SetNumberOfFirstIterations(GetParameterInt("tiling.user.nfirstiter"));
@@ -134,6 +135,7 @@ private:
     controller.SetSpecificParameters(params);
     float thres = GetParameterFloat("threshold");
     controller.SetThreshold(thres*thres);
+    controller.SetNumberOfIterations(GetParameterInt("niter"));
 
     // Run the segmentation
     controller.RunSegmentation();