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Author Topic: Extend Reduce overlap to DEM for ortho production  (Read 1766 times)

JRM

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Extend Reduce overlap to DEM for ortho production
« on: August 06, 2021, 11:50:47 AM »
Hi,

Up to now, the reduce overlaps feature only works with a generated 3D mesh as a basis, not a DEM. For us it would be useful to accelerate the production of orthophotography where we would discard all the axis but the nadir.

If we do it with the generated mesh and the nadir images, the overlap algorithm will keep a bigger amount of images to cover the vertical faces which are not needed for the ortho end product. Basing it on a DEM would improve the rate of reduction and speed up the next steps of processing.

Regards,
Jean-Roc

flyzk

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Re: Extend Reduce overlap to DEM for ortho production
« Reply #1 on: August 10, 2021, 01:17:31 AM »
Hi,
Just an idea..
In reference panel, organize picture by pitch angle, then disable/delete obliques.
Then apply reduce overlap with generated mesh

Don t you think it would work?

JRM

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Re: Extend Reduce overlap to DEM for ortho production
« Reply #2 on: August 10, 2021, 10:22:47 AM »
All the non-nadir images can be disabled but even with only nadir images in the chunk, the reduce overlaps over a mesh will keep more than needed to cover as much vertical faces as needed.

flyzk

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Re: Extend Reduce overlap to DEM for ortho production
« Reply #3 on: August 10, 2021, 11:09:15 AM »
this is a good point.
I also upvote a such feature!

thanks !