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Messages - xabierr

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General / Export orthomosaic + DSM
« on: January 09, 2023, 09:03:09 AM »
Hi there,

Is there a way to exporting the ortho and DSM together as a 4-band raster?



General / split dense point cloud
« on: June 05, 2022, 12:42:32 AM »
Hi there,

Why/when are the "split in blocks" and "clip to boundary shapes" greyed out when trying to export a dense point cloud?


General / Re: Metashape Professional and Coral Reef Measurement
« on: June 10, 2021, 10:17:09 AM »
Hi Simon,

Amazing work!  I am sure using UWIS GPS is improving processing performance for large projects but are you also finding significant accuracy improvements?



General / Re: reset region using shapefile
« on: April 29, 2021, 01:01:08 AM »
Thanks Alexey.

I mean cropping the bounding box extent to a polygon shapefile extent OR cropping the sparse point cloud to the extent of the polygon shapefile.

General / reset region using shapefile
« on: April 28, 2021, 05:22:35 AM »
As far as I understand, the Reset Region option is currently based on the sparse cloud only. I am trying to align multiple surveys (different times) to the same region extent.

Is there away to select/crop points in the sparse point cloud OR reset the region using a shapefile? If not, is there any workaround?



General / Re: orthomosaic from sparse vs dense cloud
« on: January 21, 2021, 04:47:29 PM »
Thanks Alexey. See attached.

General / orthomosaic from sparse vs dense cloud
« on: January 20, 2021, 11:26:29 PM »
Hi there,

Im reconstructing a highly complex/very-high res vegetation scene from handheld photos.

Just wondering why the quality of the orthomosaic from the (cleaned) sparse point cloud (see attached sparse) is much better than that from depth maps or (cleaned) dense point cloud (see attached dense).

Is it just that the sparse mosaic is smoothed out and looks better but the dense mosaic is more accurate and has better dealt with distortions?



How much overlap/distance between 360 panoramas would you need for 3D reconstructions?

Feature Requests / Define planar projection in batch
« on: November 11, 2020, 09:52:29 AM »
is there a workaround to define a planar projection when running Build DEM / Build Orthomosaic in batch?

General / region orientation
« on: November 09, 2020, 10:55:57 AM »

Hi all,

Im trying align the orientation of the orthomosaic using markers with no success. I have captured a "3D" scale bar with 6 markers: 1 - 2 defines the vertical axis and 9 - 10 and 7 - 8 the horizontal axis (see attached picture).

I would like to build a DEM with the correct orientation and export the orthomosaic looking from the top.

Ive been trying to build the DEM using planar/markers but if I select horizontal 7-8 (or 8-7) then the orthomosaic is oriented vertically and if I select vertical 1-2 (or 2-1) I get an empty DEM.

Any suggestions?         

General / scale bars vs 3D ground control points
« on: October 29, 2020, 05:27:48 AM »
Hi all,

How many scale bars would be required to remove radial distortion on a model? Is there an equivalent to the suggested 9-12, well distributed full 3D ground control points? Or the use of scale bars is never equivalent to full 3D GCPs?



General / Re: Fresh install - Missing OpenSSL
« on: October 08, 2020, 11:15:34 AM »
Thanks Alexey. That worked

General / Re: Fresh install - Missing OpenSSL
« on: October 07, 2020, 05:01:11 AM »
Im getting the same error and message after installing ver 1.1.1


General / Re: Calibrate colors - Undo (revert)
« on: September 11, 2020, 03:56:33 AM »
Following up on this.... @Alexey do you have to re-build the dense cloud in order to revert color calibration?

Hi Stihl.

Are not the weight of cameras determined based on (RTK derived) XYZ positional errors? Still not good enough?

Also, what values would you suggest for the other criterion 'reprojection error', 'reconstruction uncertainty' and 'projection accuracy'?



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