Forum

Author Topic: Short report on reconstruction with WW2 air-recce images  (Read 2772 times)

photogrammetrix

  • Newbie
  • *
  • Posts: 42
    • View Profile
Short report on reconstruction with WW2 air-recce images
« on: January 15, 2014, 02:50:08 AM »
Hi all,
for a history project we tested PS reconstruction capabilities with 2 sets of  WW2 airial reconnaissence images:

Set 1: British Royal  Airforce recon images from a small town in Germany, late summer 1943, camera unknown, geometry etc. were unknown to us, poorly scanned by the vendor, low resolution, partly cloud cover, a minimum set of only two images.

Set 2: A couple of images from two flights over Volgograd (aka Stalingrad), August and Oktober 1942, German Luftwaffe (Source is an archive in the US, please send PM if you are interested), Images were of good quality and hr-scans provided by the archive were really good, 3.7k by 3.7 k pixel, fiducials were visible, so we were able to reduce some image distortion introduced by the scanning process. Camera was Zeiss RB 70/30 and RB 50/30.

Results:

Set 1: Even with this poor set PS was able to do a mosaicking.
Please see first image. no acceptable dsm.

Set 2: Very good mosaicand a more or less acceptable dsm, generation of textured 3 model, based on an 41 Mio point cloud. Please see image 2.

PS did a great job for this test.

photogrammetrix

  • Newbie
  • *
  • Posts: 42
    • View Profile
Re: Short report on reconstruction with WW2 air-recce images
« Reply #1 on: January 15, 2014, 03:06:39 AM »
Hi all,
there is a small typo:

Cameras were Zeis RB75/30 and 50/30.

first number is focal length in cm(!), second is image format (30x30cm)

here is a link for an image of RB75/30:
http://commons.wikimedia.org/wiki/File:Zeiss_RB-75_30_aerial_camera_1.JPG

Cheers