Topics

1

General / Band combination in Photos View

« on: March 31, 2023, 09:54:37 AM »

Hello!
I am working with multispectral imagery captured by Altum camera (no IMU). In the Photos View I see only the first (grey-scale) band. Is it possible to visualize the Photos in some band combination? I am trying to identify GCPs, but in the grey-scale it is very difficult.
Thank you
Jan

2

General / 3D feature creation using stereoscopic view

« on: October 19, 2022, 01:44:09 PM »

Hello,
is it possible to interactively create 3D features by placing them directly on the terrain (like the standard photogrammetry SW do) using the stereoscopic view? I am able to view the scene in 3D, but I would like to "place the cursor on the surface" and create a point there.
Thank you.
Jan

3

General / Multipage TIFFs from TETRACAM ADC processing

« on: March 08, 2019, 03:06:13 PM »

Hello,
we have mastered the data collection technique using the TETRACAM ADC Lite camera on our small aircraft (in combination with stable gimbal) and there is no problem in computing the data in Metashape. So far I have played around only with coloured JPGs exported from the Tetracam PixeWrench2 software.
I wonder if I can get some more information contained in the imagery creating the Multipage TIFF from the RAW images obtained by the Tetracam ADC Lite - if the camera in fact collects data only in three bands (R-G-NearIR).
In the attached image are the possible layers for creating the Multipage TIFF.
Thanks for any hint.
Jan

4

General / Large project Not Responding

« on: April 16, 2017, 03:12:28 PM »

Hi everybody.
I am currently stucked with the current issue - I have computed a large project (11500 images). I have done dense cloud and "height field" mesh.
The opened project takes about 28GB RAM (out of 256) and I want to compute the Orthophoto.

BUT the project sayes NOT RESPONDING - when I click anywhere in the PS window, the cursor turnes into the "blue wheel" and after some time it turnes back into the mouse cursor but nothing happens. If I click again, then I get the Not Responding again .. and here we go round and round. If I try the KILL the PS and re-open the project, it opens with the same problem.

This is very frustrating as I need to deploy the results on Tuesday and I still have to compute the orthophoto ... and so far I used about 90 hours of processing to get to this point ...
I suspect that the problem is caused by the mesh being opened on the app start - is there a way how to edit the project definitions and tell him to open sparse cloud on the project start??

Jan

5

General / Orthophoto tiles based on tiling scheme

« on: April 13, 2017, 10:08:18 PM »

Hi there,
is it possible to export Orthophoto tiles based on pre-defined (vector) tiling scheme?? In my case tiling scheme of our national map.
Thank you for any help.
Jan

6

General / WGS84 vs local coordinate system - large error at pointcloud optimalization

« on: April 12, 2017, 08:54:55 PM »

Hi everyone,
I have already for two days burried in this problem and a fresh idea would come in handy
I have a very large dataset of 25 sq km = 11500 36MPix images. I have synced the GPS data with the JPG's EXIF to "speed up the aligment process".

- There were some large errors in the GPS data (due electromagnetical storm) so for the aligment I used just the Generic option.
- I want the data to be in our national coordinate system (planar) - I have measured 19 GCP with RTK- GPS (coordinates in the planar system)
- this was the first time I have used the GPS data in the EXIF file (bad for me)

The workflow was the following:
1. Add Images (images were added and the blue dots representing the image centers were created)
2. The coordinate system of the project was automatically set to WGS84 (based on the GPS data in the EXIF)
3. I performed the aligment process (it took about 17 hours - high/40 000/4 000)
4. I have noticed that the coordinate system is set to WGS84, so I have "cleared" the reference information from the images (the GPS data) and I have set the coordinate system (the "Tools like" icon in the Reference pane) to Local (m)
5. I have defined markers, added coordinates (in the local system) and corrected all of the positions
6. I used the Optimize camera position tool (the Magic wand) and here comes the strange thing - normally I get errors at each marker in centimeters (5 and less) but here the error is in meters!!!

Is it possible that PS somehow remembers the WGS coordinate system from the aligment process and thats why there is so large error at each marker??
I have started new aligment in the local system from the very beginning ... I have a lot of time while waiting so I am trying to find out more about this problem.
Thanks for any help.
Jan

7

General / How to fix positions in GPX file?

« on: April 09, 2017, 08:40:41 PM »

Hi there,
we did today a very large survey and to speed-up the processing time I wanted to sync the GPX from the GPS mounted in our aircraft with the EXIF of the photos.
Well - there were some "electromagnetic disturbations" during the flight and the GPS position is not precise in some areas (even we were flying in lines) - I wonder if there is some way how to fix the positions of the "wrong" GPS locations saved in the GPX file ... as I know where the point should approximately be ...
I have acces to ArcGIS or ArcGIS Pro with all extensions.

OR ... would the mistake influence the alignment process at all?? I have enough set of GCPs across the whole area, but I am working with 10K+ images ... so I just want to make it as fast as possible.
Thank you for any advice
Jan 

8

General / New computer for 2K €

« on: March 22, 2017, 10:16:59 PM »

Hi there,
we are starting on a new project - 3D modelling of archaeological sites. We would like to get a new computer that will be used only for the SfM modelling (and eventually CAD visualizations). We will process about 300 images (20MPx) for one model. Our budget is 2000€. Would you please suggest what we can get for the money??
Thank you
Jan

9

Bug Reports / Strange NVIDIA erros during aerial imagery aligment

« on: February 18, 2017, 11:48:53 PM »

Hi there,
I use the newest 1.3.0 version and I am processing old aerial imagery scanned at 15 um. I am getting strange graphic driver errors when I try to use higher ammount of key points.
It detects the points and then I get the message "the graphic driver stopped to respond and was restarted".

Code: [Select]

2017-02-18 21:39:15 AlignPhotos: accuracy = Highest, preselection = none, keypoint limit = 300000, tiepoint limit = 10000, constrain features by mask = 0, adaptive fitting = 1
2017-02-18 21:39:15 Detecting points...
2017-02-18 21:39:15 Using device: GeForce GTX TITAN X, 24 compute units, 12288 MB global memory, CUDA 5.2
2017-02-18 21:39:15   max work group size 1024
2017-02-18 21:39:15   max work item sizes [1024, 1024, 64]
2017-02-18 21:39:17 [GPU] processing 17140x15884 image using 5714x7942 tiles
2017-02-18 21:40:08 photo 1: 299520 points
2017-02-18 21:40:12 [GPU] processing 16842x15884 image using 5614x5295 tiles
2017-02-18 21:40:16 photo 2: 299520 points
2017-02-18 21:40:18 [GPU] processing 17140x15884 image using 5714x5295 tiles
2017-02-18 21:40:22 photo 3: 299520 points
2017-02-18 21:40:24 [GPU] processing 16940x15765 image using 5647x5255 tiles
2017-02-18 21:40:28 photo 4: 299462 points
2017-02-18 21:40:30 [GPU] processing 17051x15884 image using 5684x5295 tiles
2017-02-18 21:40:35 photo 5: 299471 points
2017-02-18 21:40:37 [GPU] processing 17140x15884 image using 5714x5295 tiles
2017-02-18 21:40:41 photo 6: 299520 points
2017-02-18 21:40:43 [GPU] processing 16800x15645 image using 5600x5215 tiles
2017-02-18 21:40:47 photo 7: 299350 points
2017-02-18 21:40:49 [GPU] processing 17140x15884 image using 5714x5295 tiles
2017-02-18 21:40:53 photo 8: 299504 points
2017-02-18 21:40:55 [GPU] processing 16940x15645 image using 5647x5215 tiles
2017-02-18 21:40:59 photo 9: 299468 points
2017-02-18 21:41:06 photo 0: 299776 points
2017-02-18 21:41:06 [GPU] processing 17140x15884 image using 5714x5295 tiles
2017-02-18 21:41:10 photo 10: 299520 points
2017-02-18 21:41:10 points detected in 114.924 sec
2017-02-18 21:41:10 Matching points...
2017-02-18 21:41:10 Using device: GeForce GTX TITAN X, 24 compute units, 12288 MB global memory, CUDA 5.2
2017-02-18 21:41:10   max work group size 1024
2017-02-18 21:41:10   max work item sizes [1024, 1024, 64]
2017-02-18 21:41:19 Warning: the launch timed out and was terminated
2017-02-18 21:41:19 Finished processing in 123.332 sec (exit code 0)
2017-02-18 21:41:19 Error: the launch timed out and was terminated at line 208

or I get strange errors like this

Code: [Select]

2017-02-18 21:47:11 AlignPhotos: accuracy = High, preselection = none, keypoint limit = 300000, tiepoint limit = 4000, constrain features by mask = 1, adaptive fitting = 1
2017-02-18 21:47:11 Detecting points...
2017-02-18 21:47:11 Using device: GeForce GTX TITAN X, 24 compute units, 12288 MB global memory, CUDA 5.2
2017-02-18 21:47:11   max work group size 1024
2017-02-18 21:47:11   max work item sizes [1024, 1024, 64]
2017-02-18 21:47:36 photo 0: 299816 points
2017-02-18 21:47:36 Warning: invalid resource handle
2017-02-18 21:47:36 Finished processing in 24.306 sec (exit code 0)
2017-02-18 21:47:36 Error: the launch timed out and was terminated at line 67

When I uncheck the GPU support for computations so the computation is processed, but takes much longer time.
Thanks
Jan

10

General / Rapid processing slow-down after Win 10 anniversary update

« on: October 07, 2016, 07:46:27 PM »

Hi there.
I am running a powerfull server for PhotoScan computations (XEON E-52683 v4, 256 GB RAM, GeForce GTX Titan X) and I am currently testing a large dataset (5000 images, 40MPix).
The dense point cloud computation on medium setting took me 14 hours. After the Win 10 anniversary update - after 15 hours of computation - there was still 20 hours left!!
Today I went for the "previous windows build" (unistalled the anniversary update) and I am back on the 14 computation time.
Is there any explenation for this??
Thank you.
Jan

11

General / No OpenCL card on brand new server

« on: August 03, 2016, 12:02:15 PM »

Hi,
I just got a brand new computational server:
Windows 10 Pro
XEON E-52683 v4
256 GB RAM
GeForce GTX Titan X (and onboard card)
and the latest release of Photoscan
There is no OpenCL card available in the OpenCL settings. I am accesing the computer via TeamViewer.
What am I doing wrong?
Jan

12

General / How to project curved wall into plane

« on: March 20, 2016, 01:35:52 PM »

Hi,
I have this wall https://skfb.ly/Mpr8 modelled in PhotoScan (with GCPs).
How do I project this wall into plane (create orthophoto of the whole wall)??
Thanks a lot.
Packy

13

Bug Reports / Texture mapping in 1.2.3

« on: February 25, 2016, 11:25:42 AM »

Hi,
I have recently tested the 1.2.3 version on our workstation and there are several issues I would like to ask about:
1. it seems that texture mapping (Build Texture) is producing absolutely useless results - it seems that it is mapping some other parts of the images (see attachment) or mapping doors multiple times (https://skfb.ly/KYqV) or just mapping nothing (https://skfb.ly/KXxq).
2. it just seems that the point cloud generation takes much longer then in the 1.1.x version
Have you met such problems???

14

General / Server for 10K €

« on: December 19, 2015, 11:33:37 PM »

Hi there,
currently I am computing on my 2 years old server: AMD Opteron 6282 SE, 128GB RAM and 4GB Cuda card
I have ca. 10K € for a new one (I need to buy it within the next month). What can/should I get for the money?
Thank a lot for any help.
Packy

15

General / Unfolding the tower 3D model

« on: December 14, 2015, 10:29:17 PM »

Hi to all.
I have a 3D model of an old castle tower (100% cylinder). I would like to unfold the tower (the orthophoto) into the plane. How should I do it, or which external software to use??
Thanks a lot.
Packy