1
General / Re: Differential scaling
« on: September 30, 2024, 03:00:18 PM »
I'm still surprised, if true, that scale markers only result in a uniform scaling.
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2
General / Re: Differential scaling
« on: September 27, 2024, 03:55:45 AM »
It's a downward pointing fisheye (220 degrees) lowered into the manhole, please see attached.
Video is being recorded, I extract every 1/10 or 1/5 video frame for the reconstruction.
No exif data.
ps: I totally accept this is not how I would design a system to do this, what we are hoping is to use the existing manhole inspection system to perform reconstructions.
Video is being recorded, I extract every 1/10 or 1/5 video frame for the reconstruction.
No exif data.
ps: I totally accept this is not how I would design a system to do this, what we are hoping is to use the existing manhole inspection system to perform reconstructions.
3
General / Differential scaling
« on: September 26, 2024, 03:53:35 PM »
A question about markers and scale bars.
I have markers and known lengths along two roughly orthogonal axes. I assumed (perhaps incorrectly) that the model would be scaled differently in order to meet these scale bar values. Rather than just scaling uniformly.
But it seems that isn't happening, or I don't know to enable that ability. Obviously, one would like to think that all axes are being reconstructed with a constant scale, but in this case that does not seem to be the case.
For example, if I set the scale bar values on the horizontal plane, the vertical distances are incorrect, while other measurements on the horizontal plane are correct. Similarly, if I set the scale values for the vertical plane the distances on the horizontal plane aren't correct, while other measurements on the vertical are correct.
I have markers and known lengths along two roughly orthogonal axes. I assumed (perhaps incorrectly) that the model would be scaled differently in order to meet these scale bar values. Rather than just scaling uniformly.
But it seems that isn't happening, or I don't know to enable that ability. Obviously, one would like to think that all axes are being reconstructed with a constant scale, but in this case that does not seem to be the case.
For example, if I set the scale bar values on the horizontal plane, the vertical distances are incorrect, while other measurements on the horizontal plane are correct. Similarly, if I set the scale values for the vertical plane the distances on the horizontal plane aren't correct, while other measurements on the vertical are correct.
4
General / Marker positions
« on: August 20, 2024, 02:42:20 PM »
See attached.
In the past I'm "sure" I could double click on the positions of the markers and set their values. Don't seem to be able to now. Ideas why?
In the past I'm "sure" I could double click on the positions of the markers and set their values. Don't seem to be able to now. Ideas why?
5
Bug Reports / Crash on align points in high mode
« on: December 09, 2023, 08:18:51 AM »
Metashape and MetaShape Pro crash at the start of the align points phase.
Works for "medium" but fails for "high".
I've processed much larger projects than this in the past, this only has 135 photos from a 100MPixel camera.
Logs for medium and high are attached, and I sent in the crashlog.
Works for "medium" but fails for "high".
I've processed much larger projects than this in the past, this only has 135 photos from a 100MPixel camera.
Logs for medium and high are attached, and I sent in the crashlog.
6
General / Canon RF 5.2mm F2.8L dual fisheye
« on: September 19, 2023, 04:10:41 PM »
I'm a long time user of MetaShape Pro, we have a project where we want/need to reconstruct a very complex internal room. Lots of objects with complex occlusions. An idea I had to reduce the number of photographs is to use the Canon dual fisheye lens on the Canon R5, a fisheye stereo pair. Does this make sense? Can I link the two fisheye images to be a specified distance apart? Noting that I've done some work with the Canon dual fisheye, it is "extremely" linear.
7
General / Displacement map
« on: January 13, 2023, 11:42:52 AM »
In the changelog for version 2.0.0
https://www.agisoft.com/pdf/metashape_changelog.pdf
it says, first item, that it added displacement maps in the build texture dialog.
Where? I don't see it,
https://www.agisoft.com/pdf/metashape_changelog.pdf
it says, first item, that it added displacement maps in the build texture dialog.
Where? I don't see it,
8
Camera Calibration / Adaptive camera model or calibration groups
« on: September 20, 2021, 05:40:44 AM »
I have a large scale drone survey with two different drones.
Is it better to manually split into two camera calibration groups or use the "Adaptive camera model fitting" during alignment?
Does it make any difference?
Is it better to manually split into two camera calibration groups or use the "Adaptive camera model fitting" during alignment?
Does it make any difference?
9
General / Re: Building texture from Orthomosaic
« on: July 08, 2021, 01:12:52 PM »
Alexey, to your suggestion, that is what I believe I have done so far. Won't that approach only give me a texture at the resolution of the mesh vertices.
As it happens my point cloud, and orthotif image, are orders of magnitude higher resolution than any mesh I could contemplate building.
Or have I misunderstood?
As it happens my point cloud, and orthotif image, are orders of magnitude higher resolution than any mesh I could contemplate building.
Or have I misunderstood?
10
General / Re: Building texture from Orthomosaic
« on: July 07, 2021, 06:11:41 AM »
Related to this. Once I have my mesh (which is lower resolution than my point cloud) why can't I derive a texture image from the dense point cloud colours. I only seem to have the option of deriving it from the mesh vertex colours.
11
General / Building texture from Orthomosaic
« on: July 07, 2021, 05:25:25 AM »
I have a point cloud and orthomosaic image in the same coordinate system.
I can build a mesh from the point cloud.
Is it possible the create textures for my mesh from the orthomosaic?
MetaShape Pro.
I can build a mesh from the point cloud.
Is it possible the create textures for my mesh from the orthomosaic?
MetaShape Pro.
12
General / Depth maps
« on: September 10, 2020, 10:11:50 AM »
Relatively surprised the depth maps, as exported, are only 8 bit.
Is that correct, are they only 8 bit internally also? Seems highly quantised if so.
Is that correct, are they only 8 bit internally also? Seems highly quantised if so.
13
General / Exporting depth maps
« on: September 10, 2020, 07:45:01 AM »
Why, after creating a dense point cloud, can't I export the depth maps? They exist at that point. The menu is only active after I create a mesh, a step I should not need to do in order to get the depth maps.
14
General / Sparce and dense cloud export
« on: September 10, 2020, 06:29:40 AM »
If I export the sparce point cloud I get a sensible result, first few lines look like this
0.4533 0.8372 -2.5517 82 59 54
0.4743 0.8431 -2.5234 142 125 119
0.4728 0.8505 -2.5284 141 124 117
0.4890 0.8367 -2.5219 146 137 133
0.0657 0.8378 -2.6840 205 197 184
-0.0097 0.8394 -2.7019 198 188 175
etc etc
But if I export the dense point cloud, same model, I get seemingly incorrect values for z axis, first few lines
-0.8732 1.4543 -6356755.8168
-0.8827 1.4062 -6356755.8348
-0.8887 1.4715 -6356755.8116
-0.8870 1.4534 -6356755.8185
-0.8990 1.4234 -6356755.8288
-0.9016 1.4706 -6356755.8125
-0.9136 1.4397 -6356755.8219
-0.9127 1.4105 -6356755.8305
etc etc
What might be causing this?
0.4533 0.8372 -2.5517 82 59 54
0.4743 0.8431 -2.5234 142 125 119
0.4728 0.8505 -2.5284 141 124 117
0.4890 0.8367 -2.5219 146 137 133
0.0657 0.8378 -2.6840 205 197 184
-0.0097 0.8394 -2.7019 198 188 175
etc etc
But if I export the dense point cloud, same model, I get seemingly incorrect values for z axis, first few lines
-0.8732 1.4543 -6356755.8168
-0.8827 1.4062 -6356755.8348
-0.8887 1.4715 -6356755.8116
-0.8870 1.4534 -6356755.8185
-0.8990 1.4234 -6356755.8288
-0.9016 1.4706 -6356755.8125
-0.9136 1.4397 -6356755.8219
-0.9127 1.4105 -6356755.8305
etc etc
What might be causing this?
15
Face and Body Scanning / Re: Best Camera Choices for a rig - budget cameras?
« on: August 29, 2019, 10:44:22 AM »
I recently did this
http://paulbourke.net/reconstruction/humanscan2/
Used Canon EOS 1500D, 24MPIxels, working great.
http://paulbourke.net/reconstruction/humanscan2/
Used Canon EOS 1500D, 24MPIxels, working great.
