Recent Posts

91

General / Re: DEM Fill Tool

« Last post by Paulo on April 09, 2024, 02:42:35 PM »

Strange Dave,

can you print the shape vertex coordinates? And what is shapes crs? same as dem CRS?

92

General / Re: PPP and shifting camera position or output position with RTK m300

« Last post by Paulo on April 09, 2024, 02:40:49 PM »

Hi Jake,

In my book, I would use  PPP (minimum 4 h) to obtain a updated and precise base station coordinates,

Then calculate the shift from original to updated position and apply this to all camera reference coordinates and then redo the workflow to generate orto...

Hope this can be helpful,

93

Feature Requests / Re: Please improve the algorithm for building texture with blocked model.

« Last post by Alexey Pasumansky on April 09, 2024, 02:14:12 PM »

Hello steve3d,

The procedure of block model texturing will be improved in 2.1.2.

94

Python and Java API / Re: Apply patch on multiple shapes

« Last post by Lorenzoo on April 09, 2024, 12:15:15 PM »

Hello Lorenzoo,

In 2.1 version to check that shape has polygon type you need to use the following:

Code: [Select]

shape.geometry.type == Metashape.Geometry.Type.PolygonType

Hi Alexey,

Thank you very much for that, that part works 

When i get to the section of code below, I now get the message:   Error: 'Metashape.Shape' object has no attribute 'vertices'

Is there different code that I should be using for V2.1  ?  Any help would be greatly appreciated.


def findCentroid(shape):
   area_sum = 0
   C = Metashape.Vector([0, 0])
   print("next bit7...")
   for i in range(1, len(shape.vertices) - 1):
      cent = shape.vertices[0] + shape.vertices + shape.vertices[i + 1]
      area = area2(shape.vertices[0], shape.vertices, shape.vertices[i + 1])
      C += Metashape.Vector([area * cent.x, area * cent.y])
      area_sum += area

   C /= (3 * area_sum)
   return C




I will attach the full code i'm trying to run...

95

Camera Calibration / Leveling problem (building/roof model)

« Last post by LourraineZ on April 09, 2024, 10:41:20 AM »

The program is calculating points with very large differences in level.
In addition, it shows part of the façade of the building, when it should only show the roof, as top view.

For example ( Screenshot2 ), these 2 points should be on the same level ( 9,5m ) , but they are at 5,0m and 7,2m
For that reason the section of the building is completely nonsense.

Is there a way to fix this? Not having to fly with the drone again?


Thanks!

96

General / Re: DEM Fill Tool

« Last post by dpitman on April 09, 2024, 04:59:17 AM »

Hi Paul.

Trying other parameters doesn't seem to make a difference in this case, unfortunately.

97

General / Re: RTK Positioning accuracy with Mavic 3E

« Last post by olihar on April 08, 2024, 09:06:30 PM »

There is a separate forum for other languages. Please use English so others can participate.

98

General / PPP and shifting camera position or output position with RTK m300

« Last post by Jake on April 08, 2024, 08:59:59 PM »

Hi,

We are flying the M300 with P1, LiDAR and Micasense multispectral sensors over forestry research trials.
We collect data on the same sites in different seasons, so need to get the best possible alignment.

We fly RTK flights with the above mentioned sensors, so get ~5cm relative reference. 
I would like to get the best absolute reference possible as well. 
We can PPP the base station logs https://webapp.csrs-scrs.nrcan-rncan.gc.ca/geod/tools-outils/ppp.php and get the absolute accuracy down to a theoretical 5cm as well.
We have also just begun using the Emlid Reach base and rover, so we would be using the Emlid studio wrkflow flow to shift the GCP locations.  We can also get updated camera locations from here as well.

I was just wondering if this is something anyone on here has a workflow for.

Do you shift each camera?  Or does shifting the output tif by the base shift produce the same results?

We are not interested in models, only output orthomosaics.

Thanks for any suggestions

Jake

99

General / Re: RTK Positioning accuracy with Mavic 3E

« Last post by Dieter on April 08, 2024, 04:56:23 PM »

Wenn ihr ansonsten im Metashape alles richtig gemacht habt (Überlappung usw.) dann bin ich mit meinem Latein am Ende


Gruß
Dieter

100

Python and Java API / Re: Import markers from multiple files

« Last post by Mrblonde8888 on April 08, 2024, 04:47:44 PM »

Hello, after a considerable time I came back to this topic. I managed to merge different xml files using visual studio. The script didn't work, markers were scattered in chaotic order inside the point cloud.