Topics

1

General / Build DEM using lowest points (bottom of grass/vegetation)

« on: October 14, 2024, 05:40:51 PM »

I would like to build a DEM that primarily uses the lowest LiDAR points scanned of a grassy terrain, to get as close to the ground surface as possible. I am using the Planar Bottom XY projection, can anyone confirm if this would be the best approach? Use examples of the different planar projection methods would be helpful.

2

Bug Reports / Export Model - Clip to Boundary Shapes Overlap

« on: August 06, 2024, 03:54:38 PM »

I am exporting a model and enabling clip to boundary shapes. Due to the large scale of the object, I have several overlapping shapes to cover the area of interest. However, the exported object is divided where the shapes overlap. I would expect the overlap area to be additive, but it appears to be subtractive. Is there a way to combine multiple shapes into a single shape or is this indeed unintended functionality?

3

Bug Reports / DIsabled Interpolation during meshing still results in interpolated mesh

« on: February 19, 2024, 04:26:54 PM »

I've had this issue in prior versions and from other posts it appears others are also having a problem with "disabled" interpolation and resulting meshes appearing to still be interpolated.

For what it's worth, the projects I have experienced this with include LiDAR data.

I am meshing a flat surface, using strict volumetric masks, Depth Maps + Laser scans. The resulting mesh edges of the flat surface are rounded off. This causes quite an inconvenience in the workflow for this project.

Version 2.1.0 build 17532

4

General / WGS84 to local coordinates (m) with false easting/northing projection (PRJ)

« on: November 03, 2023, 05:29:29 PM »

I am exploring getting WGS84 coordinate Laser scans and drone data exported to e57/FBX file using a marker as a pre-determined local coordinate. It seems this can be done with a custom projection file? I am not familiar with the syntax. Hoping someone can provide an example or shed some light on this. Thanks in advance.

5

General / Camera Position Accuracy

« on: October 30, 2023, 02:49:00 PM »

Does Metashape calculate the accuracy of the projected position of the camera itself? What would this be called in the general photogrammetry process?

6

General / Import e57 Laser Scans, Points and Images

« on: November 21, 2022, 06:36:59 PM »

I am trying to import Laser Scans in e57 format exported from Leica Cyclone but I cannot get the points and panoramas imported together. If I import as Laser Scans I only get panoramas. If I import as points, I only get the point cloud. I want to use the panoramas to texture a mesh, but when imported as laser scans, the cameras are listed as not aligned, though they are displayed in their proper alligned positions as exported from Cyclone.

7

General / Recommended noise pattern for structured light projection

« on: March 18, 2021, 05:47:53 PM »

I am using some projected structured light on my subject, is there are recommended noise pattern to use that works best with metashape? Would be a great feature to have a pattern programmed into the software that one can print out similar to the targets. Or maybe that already exists?