Fringe/tailing edge added to models after trimming dense cloud

[Doszpot]

Hi,

I have been building models of coral colonies in PS and have been trimming the dense cloud prior to adding the mesh to the model.  Photoscan seems to extrapolate beyond the dense cloud and adds a fringe or skirt to the outside of the models along the trim line (see attachments).  Is there a way to prevent this from being included in the mesh or a way to remove it without manual trimming of the model?

Thanks,
Neil

[Alexey Pasumansky]

Hello Neil,

You can disable the interpolation, when building the mesh from the dense cloud.

[willfig]

Hi Alexey,

Just following this post from Neil up.  Disabling interpolation causes all sorts of irregularities in the rest of mesh.  Is there no way to stop it from adding this extra mesh where there is no actual point cloud?  This is causing us trouble with the edges of corals that are quite flat, growing out into space.  Think of a fan.  The growth on these corals is at this edge but the software is adding an extra bit of mesh there that doesn't actually exist.  So we'll have to manually trim this off all edges.  This will take quite some time but also now introduces an additional source of error when estimating the growth that occurs along these edges (when we compare corals imaged at different time points).  Thanks.

Will

[willfig]

Hi Alexey,

Just wondering if you'd had a chance to consider this issue?  Thanks.

Will

[Alexey Pasumansky]

Hello Will,

Maybe you can send a small sample project with the related source images to support@agisoft.com, so that we could observe the problem and see how it can be avoided/fixed?