Large format aircraft images generation DEM - DSM only created with more than 2 overlapped images

Hi OpenDroneMap!
We are trying to creating DSM using ODM in docker, we are using Large format aircraft images which are around 60% overlapping for two continues aquisition. There are some areas only have two images ovelapped so they are generating wired patterns(just like I marked in the red box, the yellow boxes are image footprint)

We have found some discussion in the forum and changed depthmap_min_consistent_views to 2 in OpenDroneMap/SuperBuild/src/opensfm/opensfm/ but we got the same result

Below I put a link include 4 sample images and EO parameters

Do you have any idea if it is possible to generate DSM with two stereo images? Or
do we need to change some other parameters?

Best regards,

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Usually that kind of smearing means that there was insufficient reconstructed points in that region and you’re seeing interpolation and gap-filling as a result.

Could you please elabarate it a bit? What is reconstructed points means? is that Tie points? How could we got sufficient reconstructed points? is that possible with 2 images?

Yes, they’re derived from tie points, but not every tie point gets reconstructed. I think some are filtered due to constraints like min_consistent_views and other OpenSFM settings.

You’d likely need very high overlap (80%+?) for it to fully reconstruct, and even then I would expect you to lose some points near the edges.

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