Hello,
I have tried to work through the drone mapping workflow shown in the youtube videos and on the RC website. I have seen many many times so amazing non-aerial models reconstructed in RC, so detailed and accurate but for some reason the drone imagery does not fall into that category. I am very new to the RC and do not have experience and understanding of all settings required for a quality model. But still following the instructions does not provide me with as good results as other software (sometimes).
I have flown a mission at 50m height with 90%/80% overlap with total of 154 images. I use GCPs and followed the GCP workflow in RC. The model looks good but some things are off. Here is the screenshot with comparison between RC (left) and DroneDeploy (right). Without any adjustments and GCPs, DD returned somewhat more crisp model and especially with much better water surface. I know that the running water is not the best friend of the photogrammetry but nevertheless it is well reconstructed in the DD even without GCPs.
I am curious what I should consider in order to create a reasonable model in RC and further ortho and DSM/DTM outputs and what setting I should be aware of. Other specialized software seem to have little settings required to produce a nice output while RC needs to be adjusted on every step. Budget is another consideration of mine. Because of the free license in RC I should not complain though 
Hello @mykola_strata
In this case you are not comparing the models but textures, basically.
It looks like over the water part quite big triangles were created. You can try to use bigger Large triangle removal threshold settings under the Unwrap settings.
Generally it is set to 10, but you will need to set it to higher value:
Also, as you have the unwrap already provided, you will need to make a new unwrap and the align the model again.
1 Like
Thanks. Here I tried to increase the number of triangles from 10 to 40 and it got a little better. Did a new unwrap before texturing as well. Still seems a little off. Disregard the holes, perhaps very little overlap in addition to the very black regions of the water.
In general, I like the overall result except a few minor things. I guess the DD and other software perhaps do some internal image enhancements to return those vivid colors and thats why it looks a little more colorful. Not sure what they do with water region though because that looks good in their final output. Also, if they do not require any adjustments and still produce nice results, I wonder if all those settings that I have to set in RC are already at their max in DD? Anyway, I have watched most of the tutorials on RC youtube and probably watch once again to better understand the work process in RC.
Try to set it to 100, even more.
How does the model look without the texture? That is sometimes more important.
Also, textures showed in the 3d view are downscaled (if RC detects you want to view more than 1x16k texture or 4x8k texture) textures will be automatically downscaled for viewing purposes.
In order to view it in full resolution please position the camera in the 3d view and make a render image to view it in full quality/resolution.
With 100 for the number of triangles removal threshold it definitely looks better. I did the alignment in the new project and created the model using mostly default setting with some minor changes as shown in the second image. Below is the rendered image of the untextured modes using the Render Image tool. As seen here, the area over the river is very poorly reconstructed (which is probably normal for the water bodies).
Hi, it is not possible to create a proper model from moving object for photogrammetry. It needs to be still.
Also, water is not an object for reconstruction using photogrammetry.