Hi,
Ever since the last update we get a lot of ‘tearing’ in scenes when we mix our Mavic 2 pro with out Nikon D5600.
We have looked at older scenes and they are very clean and smooth without needing any tie points at all.
When we look at newer versions of the scenes we have to add lots of tie points and still get a lot of tearing… it is very visable in ‘smooth’ mode of the app
Hello,
are these two results from the same source images? Is there a a chance you have changed anything? (even settings)
There is a lot of reasons in terms of shooting why this happens and what to prevent, but for now, I want to know whether it really is by a change of versions or not so we can investigate this.
its two different shoots done on different days.
the shoot without the tearing is on a sunny day 6 months ago and was done using a Mavic 2 Pro and a Phantom 2 RTK (two different drones) on a old version of RC. It was a total of 5 shoots (oblique, aerial etc) which we fed into RC
This older scene processed perfectly without needing any control points at all despite heavy shadows and over-bright conditions.
the shoot with the tearing was done a few weeks ago on a cloudy day with no shadows and perfect conditions. It was a total of 5 shoots as well but all with a Mavic 2 pro - we thought it would be better for processing to have one camera
With the current version of the software and the new shoot we can only get the different shoots to align using many CP’s and even with perfect CP offsets we now get the heavy tearing.
so we did another test and re-processed the same scene again using the same images and you can see the tearing now in the textures as well. the first image is the original scene from +/- 4 months ago and the second image is the same scene re-processed just now. The only difference is the reduction to 20 mil polys…
you can see very clearly the tearing in the textures here although the geometry is slightly better it also has many defects
Hello again,
regarding the first before after, that is basically what I have explained to you in the other post within our discussion
" Best solution is to keep good overlaps and not changing the height of the camera position too far if you shoot on ground and then do drone photos you should fill the empty space in height, as well as while shooting on the ground you should not take one shot from 1 meter and next one from 10 meters. The detail in the images changes brutally and therefore the features as well. If the shooting is done right the Control points should not even be needed."
In the successful (late) one you were using 2 drones you said. But in the newer one you mentioned even the Nikon dslr with the drone. That is explained above, also it is hard to compare two different shootings.
What you see on the latest screenshots you have shown is quite an unfortunate issue that is going on lately. If this happens we recommend users to:
Go to Reconstruction settings
Raise the maximal distance between two vertices to something like 0.01
Raise Maximal vertex count per part (rather in both methods) to about 20 million
This effect somehow happens when parts are being created and using this method many users had this fixed.
In the last image (the one where you re-processed the original photos using the new version of RC) the texture issues you talk about and see in the image are in straight lines. Is the underlying mesh also having issues in those straight lines? If not then could it be the gutter setting for the UV generation? It kinda looks like your getting bleeding on the edges of the textures.
The tearing you see in the first set of images you posted are not in straight line. That seems to be some sort of registration issue as opposed to the issue you’re seeing in the second set of images. Could they be two different issues?
We are seeing similar issues as your first set of images so I will follow this thread to see if anything is worked out. Good luck!
yes it coul dbe two different issues - the geometry issue seems to be a alignment issue
the tearing of textures something differently as it happens all over the model and may be based on the unwrap,
we will look into the gutter setting for the UV generation - where is this located ?
that being said, the issue seems to be exaggerated by the preview textures in RC sweet preview mode
we output the scene at hi-res in our 3D software 3dsmax with 8k textures and it is hardly noticeable.
we then did a test by downresing the textures in max from 8k to 2k and the hard tears were again visible across all the seams of the unwrap.
so part off the issue its RC downresing the textures for realtime preview to 2k which makes them a lot more prominent
this does not fix the issue with it happening in the first place however! as while you cant see it from far with pure 8k textures you can see it up close.
we are trying to re-process the scene at hi-res and will check the guttering / unwrap to see if that helps (but having other issues there in other threads)
once we get it to finish a hi-res processing will follow up here.
Please try the following settings in the Unwrap tool, Karsten.
will do thanks !!!
Karsten, did you figure out what was the issue? The part with the straight lines in the textures? Was it the gutter of the UVs?