updated --help message (opencv_stitching)

modules/stitching/main.cpp

@@ -71,28 +71,30 @@ void printUsage()
         "  --try_gpu (yes|no)\n"
         "      Try to use GPU. The default value is 'no'. All default values\n"
         "      are for CPU mode.\n"
+        "\nMotion Estimation:\n"
         "  --work_megapix <float>\n"
         "      Resolution for image registration step. The default is 0.6.\n"
-        "  --seam_megapix <float>\n"
-        "      Resolution for seam estimation step. The default is 0.1.\n"
-        "  --compose_megapix <float>\n"
-        "      Resolution for compositing step. Use -1 for original resolution.\n"
-        "      The default is -1.\n"
         "  --match_conf <float>\n"
         "      Confidence for feature matching step. The default is 0.7.\n"
-        "  --ba (ray|focal_ray)\n"
-        "      Bundle adjustment cost function. The default is 'focal_ray'.\n"
         "  --conf_thresh <float>\n"
         "      Threshold for two images are from the same panorama confidence.\n"
-        "      The default is 'focal_ray'.\n"
+        "      The default is 1.0.\n"
+        "  --ba (ray|focal_ray)\n"
+        "      Bundle adjustment cost function. The default is 'focal_ray'.\n"
         "  --wave_correct (no|yes)\n"
         "      Perform wave effect correction. The default is 'yes'.\n"
+        "\nCompositing:\n"
         "  --warp (plane|cylindrical|spherical)\n" 
         "      Warp surface type. The default is 'spherical'.\n"
-        "  --expos_comp (no|gain|gain_blocks)\n"
-        "      Exposure compensation method. The default is 'gain'.\n"
+        "  --seam_megapix <float>\n"
+        "      Resolution for seam estimation step. The default is 0.1.\n"
         "  --seam (no|voronoi|gc_color|gc_colorgrad)\n" 
         "      Seam estimation method. The default is 'gc_color'.\n"
+        "  --compose_megapix <float>\n"
+        "      Resolution for compositing step. Use -1 for original resolution.\n"
+        "      The default is -1.\n"
+        "  --expos_comp (no|gain|gain_blocks)\n"
+        "      Exposure compensation method. The default is 'gain'.\n"
         "  --blend (no|feather|multiband)\n"
         "      Blending method. The default is 'multiband'.\n"
         "  --num_bands <int>\n"