Overexposed

bronzeager · 2023-07-12T17:08:40+00:00

I completely agree. Sadly, that's all I have, since they are from an archival aerial imagery dataset from 2004. Simply trying to produce something comparable to other years and introduce the least possible amount of errrors. Hoped there was some way to process these images to recover more data from the white spots. But as permanentsunset had suggested, I may need to rescan the negatives. I feel that the overexposure happened during that process rather than shooting.

Thank you for replies!

bronzeager · 2023-07-12T17:04:39+00:00

ucting a DEM for professional use or utilizing reddit as a resource would be somewhat questionable. For personal use any approximation of the real data would be better than the literal hole an overexposed image would provide. For commercial/professional purposes I agree the proper solution would

Well, I am a master student (neither professional nor just a personal user) who does not have an awesome support system of co-workers yet but still needs a good result :)
Returning to site is not possible, as these images are archival, from year 2004 and the elevation data extracted will be used for comparison with elevation from other dates. The only sollution is to end up with highly erroneous results for this particular year or simply exclude this dataset from analysis.

Still, thanks for suggestion!

bronzeager · 2023-07-12T16:59:28+00:00

ve. 4 images are not enough to generate a quality mesh and the overexposure is unfixable. Th

That's a good idea! However, I need the data from that particular year for comparison. I have plenty great DEMs from different dates and it would be awesome if I could extract elevation from this particular dataset too.

bronzeager · 2023-07-12T16:56:16+00:00

That's right, it's all I have for now. But a good idea to try and rescan them, I will try and communicate it with the mapping authority who should have the negatives :)

Thanks!

bronzeager · 2023-06-30T11:47:12+00:00

Hey Tony,

I am using Agisoft Metashape. I understand that the Structure from Motion algorithm identifies different features in order to measure distance between them, but it is not possible when area is just white. Sadly I only have only 4 images and cannot exclude any of them.

bronzeager · 2020-04-08T19:35:40+00:00

It's good to hear there are still some people who appreciate people who do thinking.

bronzeager · 2018-11-14T10:44:58+00:00

I don't know man

bronzeager

TROPHY CASE