Messages

1

General / Re: Issues Classifying Ground Points

« on: December 23, 2024, 12:40:36 AM »

I'm still not able to properly classify ground points.
For the most part it worked better, but ground points that may be stumps, rocks or a small mound, for example, will only be half classified as ground.

Another issue is that in the forest there are fallen trees that are included as ground (which is ok), but then a large portion will be unclassified.

The problem with that, is I normally classified ground points, and then all the other unclassified points (which should be trees, since I'm mapping forests) would be high vegetation. But if there are unclassified points on the ground and I call them high vegetation, it would create a lower quality Ortho. Maybe this is a seperate problem I'm having...

I attached a picture of the Ortho.

I have no idea what I'm doing wrong with my processing. In previous versions I had a lot less issues. But perhaps it's because I have a new drone (Mavic 3 Enterprise) and a new computer. Is it because I'm processing the dense cloud at Ultra High settings?

2

General / Re: Issue Converting Coordinates

« on: December 23, 2024, 12:30:20 AM »

Yes I noticed the shift before the alignment.

I left the coordinates with WGS and imported the Ortho as a TIF file into QGIS for mapping. The first thing I noticed there was that the Ortho was stretched on the X axis. And when I changed coordinate system from WGS to UTMs, it gave me the same problem as before. It would tilt the whole "world" by about 40° to the East.

Thanks for the help Alexey. Much appreciated!

3

General / Re: Issues Classifying Ground Points

« on: December 16, 2024, 09:27:14 PM »

Thanks for the reply Egor!

This did help quite a bit! But now the smaller trees, 10-15m tall, are also classified as ground.

It would help with understanding what your settings are doing. And I haven't quite wrapped my head around cell size and max angle...

4

General / Issues Classifying Ground Points

« on: December 16, 2024, 08:03:43 AM »

I'm trying to classify ground points to make a high quality DTM. For some reason the 'Classify Ground Points' function doesn't get all points on the ground. Some rocks and logs that have a steep angle don't register as ground. The next thing I would do is select all the unclassified points and call them high vegetation (since this is a forested area), but this would mean that some of the ground would be also called high vegetation.

I've tried a few different iterations but I still haven't achieved a good result.

What do you all do in this situation? Does it really matter that much? I am not sure what the best course of action is!

I attached a screenshot of part of the ground.

5

General / Re: Issue Converting Coordinates

« on: December 16, 2024, 07:33:33 AM »

Hello Alexey, thanks for the response!

Camera #1  = -121.550338, 52.993864
Camera #2  = -121.549865, 52.993860

I tried converting to Nad83, UTM Zone 10, with two different systems, EPSG::3979 AND 3348.

Thanks for the help!

6

General / Issue Converting Coordinates

« on: December 15, 2024, 09:59:05 AM »

I have flown an area and collected about 1400 images.
When I upload to Metashape and try to convert the coordinate system from WGS to UTMs, the whole dataset shifts about 20° to the East.
Does anyone know the solution for this?

I'm using a Mavic 3 Enterprise for mapping.

Thanks in advance!

7

General / M30T & M3E Questions

« on: October 31, 2023, 07:51:19 AM »

 I'm interested in purchasing the DJI M30T or DJI M3E for mapping with RGB and Thermal.

I'm curious to know everyone's input! I've been using an older drone, and am looking to upgrade.

1) Does the DJI Pilot 2 app allow for mapping large areas with large variations in terrain? I ask only because the Drone Deploy app only allows the use of terrain awareness with areas under 200 acres.
2) How much actual flight time do you get, on average, with one battery, with either drone?
3) Is the M30T a good drone for creating orthomosaics and 3D models of large areas?? I've been reading that it isn't suited for those kind of missions
4) I'm reliant on using terrain awareness for mapping areas with large variances in terrain (mountainous). How hard is it to import the DSM from 3rd party websites into the DJI PIlot 2 app?
5) Does the speed of the mapping mission get reduced or increased based on shutter speed/low light?
6) Would the RTK system on the DJI M3E work when I'm outside of cell service? Do I need a base station for it? Or does it give better location information on its own?

Thanks for any and all input!

8

General / Drone for Mapping?

« on: March 27, 2022, 09:18:31 PM »

 I am looking at upgrading my drone for mapping, but I'm not sure what I should be looking at.

Does the Mavic 3 Pro do well with mapping? I was interested in the portability of the drone.
Is the Phantom 4 Pro still good for mapping missions?

I was looking at the P4Pro RTK system. But I think that's out of my price range...

Thanks!

9

General / Drone + GPS unit? (GCPs)

« on: March 27, 2022, 09:16:16 PM »

 I wanted to get some kind of GPS unit for getting better data through Ground Control Points.

I was wondering what you all would recommend for a cost - effective setup.

Is there some kind of antennae I can sync to my phone with an app? Like SW Maps?
Or would I have to buy a whole antennae + GPS unit setup?

What do you all recommend?

Thanks!

10

General / UAV - How can I show slope

« on: October 07, 2018, 03:39:36 AM »

I flew a fairly steep area that will eventually be logged by a local mill. I created a good orthomosaic and DEM from the photos. The photos penetrated the canopy enough to extrapolate the ground information for DEM.

So now the client now wants slope % information so they can prescribe specific machinery to log in this area.

I have Global Mapper, and have come up with a really basic photo to show the slope. I just don't think it's enough data to present to the client.

Could anyone please give me some advice on how I can best do this? It could be a gamechanger for me to do this properly.

Thanks!

11

General / UAV Data - Bounding Box/Orientation Issues

« on: September 29, 2018, 08:14:20 AM »

  For some reason, after I align the images, orientation of my model is incorrect. It's as if the X and the Z axis switched over.

Since I'm using geotagged images, shouldn't it automatically have the correct orientation?

I did change some settings when I tried out a new workflow that could have possibly changed PhotoScan to do this. I've been slowly trying to fix it but I was wondering if anyone had any ideas to speed up the process?

Thanks ahead of time!

12

General / Fly-through feature

« on: December 22, 2017, 09:59:00 AM »

 Hello all, was just wondering if anyone has learned how to properly use the flythrough feature?

Is there a tutorial anywhere??

13

General / Re: New Video Card = Photoscan Crashing?

« on: June 04, 2017, 08:25:21 AM »

Hey Alexy,

I'm not sure what you mean by external tablet. I do have external harddrive connected by USB. That's pretty much it.

I did reinstall my old video card (Geforce 560) and I had no problems with the same project I was working on. Everything worked completely fine, so I know for sure now its the new video card (Geforce 1080ti) or the drivers (?) that are causing the crashes.

Does anyone have some kind of solution for this? I'm running Windows 10, and I WAS using the 1080ti with updated drivers. Also was using the updated Photoscan.

It's a pity I can't use my new video card... it was expensive!

14

Bug Reports / Re: Agisoft Photoscan 1.3.1 crashes when dense cloud is building.

« on: June 04, 2017, 07:53:50 AM »

 Hey Alexy,

I was hoping that you're right. But I changed back to my old Geforce 560 and tried the same project again with the same settings and it worked without a problem.

The problem is related to the newer video cards and/or the drivers that are related to them.

Not sure what to do now... it really sucks, since I purchased the new Geforce 1080ti but can't use it for work.



If anyone has any ideas or solutions to this problem please let me know!!

15

Bug Reports / Re: Agisoft Photoscan 1.3.1 crashes when dense cloud is building.

« on: May 29, 2017, 06:46:31 AM »

Just throwing in my two cents...

I was using a GeForce 560 and never had problems with Photoscan
I then installed a GeForce 1080ti and after that had problems with building the dense cloud. Right when it was filtering the depth maps the program would crash or Windows would get an error and the computer would reboot. I'm going to try reinstalling my old video card to see if that's the problem... Sucks if the 1080ti has compatibility issues with PhotoScan.