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Help with stitching in scan / affine mode

asked 2019-02-06 11:49:57 -0500

ljh gravatar image

Can anyone help me recreate the stitching demos from

I have compiled opencv latest 4.0.1dev as well as 4.0.0 on both Ubuntu 18.04 and MacOS

Each time I try and stitch using the example images of Budapest map and newspaper the results output are not the full panoramic image. for example, the newspaper stitched output is missing the blue masthead with the text 'denik' in a large font.

I am very keen to find settings to make opencv work for stitching in panoramic mode.

I have also tried using the stiching_detailed tutorial example but have had no luck in producing accurate stitched output.

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answered 2019-02-06 14:31:23 -0500

LBerger gravatar image

Have you try :

For images captured using a scanner or a drone ( affine motion) you can use those arguments on command line :

newspaper1.jpg newspaper2.jpg –work_megapix 0.6 –features surf –matcher affine –estimator affine –match_conf 0.3 –conf_thresh 0.3 –ba affine –ba_refine_mask xxxxx –wave_correct no –warp affine

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Thanks LBerger.

(–match_conf 0.3 –conf_thresh 0.3 resulted in a wonky panorama image) so i adjusted to use the following and the output is now as expected

--features surf --matcher affine --estimator affine --match_conf 0.6 --conf_thresh 0.6 --ba affine --ba_refine_mask xxxxx --wave_correct no --warp affine newspaper1.jpg newspaper2.jpg newspaper3.jpg newspaper4.jpg

ljh gravatar imageljh ( 2019-02-06 18:53:22 -0500 )edit

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Asked: 2019-02-06 11:49:57 -0500

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Last updated: Feb 06 '19