Topics

1

General / Align imported point cloud file

« on: September 13, 2024, 06:40:59 PM »

I am looking for a way to align an imported point cloud in Agisoft to control. I often have to combine some datasets together (photogrammetry, SLAM, etc.), and hoping to do this in Agisoft if possible.

I have control points that overlap the point cloud but not sure if it is possible to align to them (as I haven't found a way to do it yet).

2

General / Local to projected coordinate system of point cloud

« on: July 20, 2023, 12:58:19 AM »

I have some existing point clouds as las / laz that I have imported into Agisoft, and imported as a local coordinate system (as we weren't sure of the source initially). I also have a CSV of control that was imported (as local), and they match to my point cloud.

But now I want to assign the projection of the point cloud (but not actually tranform the dataset) to a UTM Zone that we use, but when changing the Coordinate System in the reference settings to UTM (or really any chosen projection), it seems to be okay for the Control and just changes XYZ to NEElev, but is completely transforms the point cloud to a different location.

Is there a step missing to do this as other software does??

3

General / Look through image view shifted from tie points / control

« on: December 23, 2019, 06:59:01 PM »

I have a real odd dataset right now that I can't figure out. It is of a runway collected by a sub using an Inspire and X5S camera. The images align fine, but they seem to be shifted / twisted from the tie points that are created (horizontally) and my survey control and I don't know why. They are all nadir imagery, so it isn't an oblique imagery issue at all.

The attached image shows the collected imaged on the right, and the look through of the same image on the left (with an orthographic view to show where the image is showing up. It appears the image is over the edge of the runway, but in fact it is much closer to the center of the runway. I have never seen a shift like this in all the projects I have collected over the years.

Also when I zoom out to just the point cloud with image locations, it appears all the image locations are shifted from the tie points, but in fact, they should be centered directly over the tie points.

I have tried to replicate with other imagery but can't do so, so I have no idea what is happening but open to suggestions.

**Note: i can't upload attachments for some reason at this time**

4

Feature Requests / GCP vs Check Point Icon

« on: October 18, 2019, 01:05:55 AM »

Any chance a different color of icon could be used to differentiate between a GCP and a Checkpoint? For big projects, when trying to set which ones to constrain as a GCP  would be nice to see a color (or different icon) between the two.

Trying to manually look thru the list of which are which is a bit awkward.

5

Feature Requests / Limit box for viewing / classification

« on: October 12, 2018, 08:26:58 PM »

It would be great to have the ability to set a limit box in the 3D view to better work with the dense cloud. It can be hard to properly select / view points that you need to clean, classify, etc. in the view as all the points are visible.

But with a limit box that you can resize move, etc. on the fly to clip the dense cloud would be ideal. Then it would allow for easier point selection of noisy points, or when manually classifying trees, buildings, etc.

Kevin

6

General / Slow alignment time - compare between computers

« on: September 14, 2016, 06:16:10 PM »

I have an issue with our main processing workstation right now, with much slower performance of it to a laptop of mine, but only for certain processes in Agisoft. The attached image outlines the two areas, with the Alignment time being much slower on my desktop than my laptop.

The desktop is a dual Xeon E5-2650 V2 with a Quadro K5200 and 128GB of RAM, whereas my laptop has in I7-3740QM with a Quadro K4000M with 32GB of RAM. Both running Windows 7 Enterprise.

Every other process is much faster on my desktop, except for the Alignment Time. The matching time is faster, but not the alignment.

I am not sure why this would be so much different, and I have also played with all the OpenCL settings as well.

Any ideas would be appreciated.

Kevin

7

General / Upload to Sketchfab - no texture?

« on: November 19, 2015, 05:51:32 PM »

Is there a way to upload the texture with the 3D model when exporting directly from Agisoft to Sketchfab??

8

General / Vertical error in DSM to Ground Control

« on: September 30, 2015, 09:27:30 PM »

We recently processed a site from a UAV, and placed a number of ground targets surveyed with RTK. We held 5 of the 10 points in Agisoft, and left the others as checks. The results from the processing in the Reference pane in Agisoft looked great (attached file Agisoft Errors). We created a DSM and exported as a Geotiff, then started doing further comparisons and noticed a vertical issue.

We determined the elevations of the 10 aerial targets from the exported DSM, and are finding around 5-8 cm in vertical differences from the DSM to our ground targets (attached file Error Check).

I would assume that our resulting DSM should give us close to identical errors as shown in the reference pane in Agisoft? Why would it be different?

Kevin

9

General / Automatic sub-chunks?

« on: August 04, 2015, 09:48:49 PM »

I have a corridor of UAV images we collected in 2 passes, but it is quite vegetated so it is having issues to align in one shot.

Is there a way that Agisoft can automatically sub-cluster images that align?? I am finding that there may be a section of images that align, but the ones that don't I move to a new chunk and align. Then there is a section of those that align, so i then move the ones that don't to a new chunk and align. Repeat.....

In the end, i may only have about 10 percent of images that don't align, but this is quite a manual process.

There isn't a way to sub-chunk (the technical term!!) groups of images when aligning??

Kevin

10

General / Manually edit image coordinates?

« on: July 28, 2015, 05:55:44 PM »

Is it just me, or can you not manually edit the image location anymore?? Some of my imagery has bogus elevations from GPS at time, so I used to manually edit, but now it doesn't seem to work.

Any ideas?

Kevin

11

General / Manual matching

« on: January 30, 2015, 09:46:30 PM »

Often times I have to manually match images that don't stitch properly, but find it difficult to keep switching between images when placing points.

Any way to get a split screen to see 2 images at once?? It would be easier to find matches between images.