opencv提供的带参数例程

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     如果仅仅是简单的拼接，可以采用stitching.cpp就差不多了；但是如果采用stitching_detailed.cpp的话，首先要解决的就是"编译问题",而后解决的是分析不同参数下的拼接结果和匹配效果；最后是能够理解一些原理。

     OK,历经一些调试，编译成功，首先看一下有哪些参数可以调整。其实光靠这个就可以写一个简单的带调整的界面了。

F:\06.项目项目\opencv拼接\imageStitching\imageStitching>imageStitching.exe
Rotation model images stitcher.

stitching_detailed img1 img2 [...imgN] [flags]

Flags:
  --preview
      Run stitching in the preview mode. Works faster than usual mode,
      but output image will have lower resolution.
  --try_gpu (yes|no)
      Try to use GPU. The default value is 'no'. All default values
      are for CPU mode.

Motion Estimation Flags:
  --work_megapix <float>
      Resolution for image registration step. The default is 0.6 Mpx.
  --features (surf|orb)
      Type of features used for images matching. The default is surf.
  --match_conf <float>
      Confidence for feature matching step. The default is 0.65 for surf and 0.3 for orb.  这个我可能会单独配置
  --conf_thresh <float>
      Threshold for two images are from the same panorama confidence.
      The default is 1.0.
  --ba (reproj|ray)
      Bundle adjustment cost function. The default is ray.
  --ba_refine_mask (mask)
      Set refinement mask for bundle adjustment. It looks like 'x_xxx',
      where 'x' means refine respective parameter and '_' means don't
      refine one, and has the following format:
      <fx><skew><ppx><aspect><ppy>. The default mask is 'xxxxx'. If bundle
      adjustment doesn't support estimation of selected parameter then
      the respective flag is ignored.
  --wave_correct (no|horiz|vert)
      Perform wave effect correction. The default is 'horiz'.
  --save_graph <file_name>
      Save matches graph represented in DOT language to <file_name> file.
      Labels description: Nm is number of matches, Ni is number of inliers,
      C is confidence.

Compositing Flags:
  --warp (plane|cylindrical|spherical|fisheye|stereographic|compressedPlaneA2B1|
compressedPlaneA1.5B1|compressedPlanePortraitA2B1|compressedPlanePortraitA1.5B1|
paniniA2B1|paniniA1.5B1|paniniPortraitA2B1|paniniPortraitA1.5B1|mercator|transve
rseMercator)
      Warp surface type. The default is 'spherical'.
  --seam_megapix <float>
      Resolution for seam estimation step. The default is 0.1 Mpx.
  --seam (no|voronoi|gc_color|gc_colorgrad)
      Seam estimation method. The default is 'gc_color'.
  --compose_megapix <float>
      Resolution for compositing step. Use -1 for original resolution.
      The default is -1.
  --expos_comp (no|gain|gain_blocks)
      Exposure compensation method. The default is 'gain_blocks'.
  --blend (no|feather|multiband)
      Blending method. The default is 'multiband'.
  --blend_strength <float>
      Blending strength from [0,100] range. The default is 5.
  --output <result_img>
      The default is 'result.jpg'.

测试图片：

第一组：

--全部默认参数,80秒，结果

--preview 约80秒,这个图片拼接的不错，但是时间太长了。

 --work_megapix <float>是用于寻找的，改为0.1后时间为30秒

      --features (surf|orb) 改成orb后速度显著提升

 --match_conf <float>也应该是数值越小匹配越快，但是失败的可能也越大。这个是不断调整参数的过程。

  --ba (reproj|ray)默认是ray，改为reproj后，速度更快！更快

然后，就是 --warp 这一块，参数比较多

plane

cylindrical

fisheye

spherical

来自为知笔记(Wiz)