Orthorectify monitoring images

Question

Good Morning! I have a probably atypical use case for WebODM. I have several photos that were taken by hovering the drone that I want to orthorectify. I have tried a few different sets of photos and tweaked a few settings, but I always get an error. I haven't found similar use cases - most people seem to be mapping a area rather than monitoring one location.

I've put some example photos here: https://drive.google.com/drive/folders/1hR50pshwMlLy_Ez_nF37gl6H9dn9LqSX?usp=sharing

These are mostly from the first monitoring location with one from the second monitoring location (which has the additional issue of the horizon in the image).

There is a lot of water in the images. That is unavoidable, but I thought there would be enough surrounding marsh.

The output with the default settings and fast orthophoto is attached.

I'm totally new to this software so any advice is appreciated.

The other settings I have tried are: use-exif: True, force-gp: True, fast-orthophoto: True, sfm-algorithm: incremental/triangulation/planar

pierotofy · Answer

Problems: too much water, horizon in the shot, not enough pictures (17), fixed camera shots. You can't use WebODM for these images unfortunately

SwirlingSands · Answer

Thanks for the input. I'm not surprised this is the answer.

GenAnon · Answer

Use QGIS and import the photos to a layer. Using a geotag tool or import photos task will at least give you the point layer with the photo linked. Not ortho directly but a location and photo.

If you really want to georeference the photo you’ll have to use “rubber sheeting” to place tie points. Thanks kind of like the revers of setting GCPs before a flight

SwirlingSands · Answer

Thanks. I've definitely done this before. We were kind of hoping for a more automated solution.

Orthorectify monitoring images

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Orthorectify monitoring images

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