Show Posts
This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
You must define the tls as fixed.
To do this, click the checkboxes for position and rotation (only tls) before the camera orientation.
Hello Dieter,
In 1.8.4 release (published yesterday) when you add pre-processed laser scans from TIFF files (all at once) they will be added as multi-camera system, but during the alignment the relative orientation of the sensors in the system will be preserved (just to not enable adjust rotation/location for the slave cameras in the Camera Calibration dialog).
This approach is an intermediate solution, as in future major Metashape updates the concept of the laser scans will be revised. But I hope that it could at least partially work for your needs.
Hello bassistas,
What color range (bit depth) the input photos and laser scans have?
As for the blank spots, I would suggest to mask out no-data regions on the images related to the laser scans prior to the texture generation stage.
My approach:
1) Import scans
2) Quick layout script
3) Import photos
4) mark only the scans as reference with an accuracy of 0.001 meters
5) allign scans and photos
Tie points are determined in the scans and the photos and compared with each other. The coordinates of the scans are held as a reference system.
Dieter
THis one should also update the image paths:Code: [Select]import PhotoScan
chunk = PhotoScan.app.document.chunk
string = PhotoScan.app.getString("Input prefix to be added to the selected camera labels:")
index = PhotoScan.app.getInt("Input starting index:")
for camera in chunk.cameras:
if camera.selected:
if camera.label[-4] == ".":
camera.label = "_".join([string,"{:04d}".format(index)]) + camera.label[-4:]
else:
camera.label = "_".join([string,"{:04d}".format(index)])
camera.photo.path = camera.photo.path.rsplit("/",1)[0] + "/" + camera.label
index += 1
print("Script finished")
Hello Bassistas,
running the quick layout scrit will assign Estimated EO from the source values but not generate tie points. So to generate the tie points you should use Tools > Tie Points > Build Poind Cloud command (assuring that you set Keep Key Points option in Preferences settings). Then you can import photos and do alignment in incremental fashion. However, if you wnt to keep the Laser scan registration, give them a very high accuracy in m and degrees....
The other alternative is to measure a few well identifiables features in the laser scans, and use these feature points as GCPs to align the images in separate chunk as specified by Dieter...then merge chunks...
Hope this helpful,
I assume that you have no orientation for the photos?
Then I would import the laser scans, then run the script for orientation over them in order to define the laser scans as fixed points. Then import the photos and allign them with the laser scans. With a little (a lot of) luck you will have identical points between laser scans and photos. You then have to decide whether that is accurate enough and sufficient. If that doesn't work, you only have the option of looking for identical points in the laser scans and in the photos and using them as GCP for photo matching.
Good luck with it.
Dieter
Hello Andy,
PhotoScan uses camera labels to match marker projections to specific photos during marker import. Camera labels are initialized to image file names by default. This can result in ambiguous selection of photos in case there are multiple images with the same file name in the chunk.
A possible solution to this problem is to rename image files after each flight adding the date of the flight (or flight id) to the beginning of the file name.
In case renaming of the images is not acceptable, camera labels can be modified in the similar way using a Python script after the images are added to the project. For example, a Python script can read EXIF date for each photo and add it to the camera label.
In case you are interested in a Python solution (with keeping original file names intact) - we will be happy to help you with a script.
