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.

Topics - rowild

Pages: [1]
I use the video importer to extract images from there. Usually I want to extract every 15th frame from a 30fps video, so I enter 15 in the "frame step" input field, which offers a name template in the form of "frame{filenum}". But it seems it does not count the frame number, but instead the consecutively extracted file numbers.

Shouldn't it rather count the frame number given that the template says "frame{filenum}"? "frame2" is indeed not "Frame 2", when every 15th frame is extracted.
Using the correct frames would also help to identify if a specific sequence needs more images or not, so I could better pinpoint the sequence needed and extract only the images of that respective area.

General / Which values does "Pixel size" in "Camera type: Frame" expect?
« on: December 27, 2023, 02:21:18 AM »
I do not understand which values I am supposed to enter in the "Pixel Size" field, which appears when the "Frame" camera is chosen. The screenshot shows that I currently use 1920x1012 which is the (edited) output of a video of a DJI Mavic 3 camera (which is a frame camera, right?). (The specs of that drone camera can be found here:

I have a feeling that I am misunderstanding that input field... Any clarification would be most welcome! Thank you!

General / How to remove the "snow" at the edges of the point cloud
« on: December 21, 2023, 02:42:13 AM »

I am rather new to Photogrammetry and to Metashape, which I use int he standard edition's trial version at the moment. I am particularly fascinated by the point cloud results Metashape generated and use them purely as "art".

I would like to get a little better and am currently struggeling with the problem of removing white noise at the edges of many of my point clouds. As the attached image shows, the trees in the point cloud seem to have snow on them – but there hasn't been any snow at the time of shooting those images. I assume it is an "artifact" from the bright background?

I've read that I can use the point cloud's filter option with values from 0 to 3. But those remove some green from the ground first, before any white is touched.

Is there another way to handle this "phenomenon"?

Thank you!

Pages: [1]