if (args_info.roi_arg != -1) {
filter.SetROI(s->GetROIFromROINumber(args_info.roi_arg));
filter.SetOutputImageFilename(args_info.output_arg);
if (args_info.roi_arg != -1) {
filter.SetROI(s->GetROIFromROINumber(args_info.roi_arg));
filter.SetOutputImageFilename(args_info.output_arg);