Topics

1

General / extract DJI GPS Data from SRT file and add as metadata to images?

« on: July 24, 2025, 01:22:58 PM »

Hi everybody,
i would like to use metascan with a drone video instead of drone photos. Metashape extracts the frames from the video but does NOT use the corresponding SRT file which holds the geo coordinates and all othe metadata of the frames.
In consequence metashape aligns the phots and creates  a scan but is out of coordinate, out of scale and out of direction.......

Is there any "trick" to include the SRT Geo coordinates an metadata to the extracted video frames? I had a look at exiftool but did not find a way to connect the frame sequence with the srt metadata sequence...

Any help would be wonderfull!

Thanks a lot, Matthias

2

Camera Calibration / mini4pro lens calibration problem

« on: February 03, 2025, 02:40:54 PM »

Hi folks,
the camera matching workflow with several dji drones starting from phantom 4, mavic3, mini3pro worked wonderfull.
creating a 3d scan from the aerial drone shots, creating a 3d fbx with cameras, importing and rendering in 3d software,
the 3d renderings and the converted aerial photos were matching perfectly!

But now the dji mini 4 pro converted images do not match the renderings at all. We tried both original 12 and 48 megapixel dji photos.
also metashape lens calibration with checkerboard on highres pc monitor did not help.

Same experiences with mini 4 pro out there? Any ideas, solutions? Would be wonderfull!
Matthias

3

Texture De-Lighter / removing shadows from photos?

« on: January 10, 2023, 03:35:04 PM »

is ist possible to transfer the delit/removed shadows situation to to the photographs when export-convert images? It would be great not only to have an delit 3d model but also to bring the delit situation back to the equalized photographs...
Matthias

4

General / Closed box volume under terrain scan surface for 3d print?

« on: January 13, 2022, 01:41:45 PM »

Hi metashape lovers, i´d like to create a "box under the terrain scan for 3d printing the terrain. Is there any posibility to "close" the suface in metashape to create a printable volume? Thanks in Advance, Matthias

5

General / Problem converting images to dng files

« on: December 08, 2021, 11:49:51 AM »

Hi,
I imported dng files into Metashape and exported the 3D model. Now I would like to save the rectified images from all cameras in dng files. But it doesn't work. Does anyone know the solution?

6

General / Right camera positions but slight offset in 3dsmax

« on: December 14, 2017, 07:40:49 PM »

I got a quite good camera alignment of a drone flight made out of 47 images.
But when i import the scan+cams in 3dsmax, there is a slight offset between the rendering and the corresponding drone image in the background (render size of course equals the drone image size), which means that the perspectives are allright, all lines are parallel to the drone image ones, but they don't overlay correctly.
So i render it, take it to Photoshop, move it up a bit and it fits perfectly. This works equally with all 47 cams.

Drone is a DJI Phantom 4 FC330.  With a DSLR the scans come out of Photoscan fitting the background without any problems.


Any ideas where this issue comes from and how to fix it in Photoscan or 3dsmax directly (depending on where the error sneaks in)?

Thank you