Author Topic: "a new perspective" (OMF Topic)  (Read 10589 times)

0 Members and 1 Guest are viewing this topic.

Offline 10538

  • Administrator
  • Hero Dronie #2
  • **********
  • Posts: 826
  • Karma: +33/-0
Re: "a new perspective" (OMF Topic)
« Reply #15 on: July 03, 2008, 12:18:54 am »
Some important points were discovered by members in that OMF thread.

The barrel distortion correction I thought was very important.

Quote from: nekitamo board=cali1 thread=2693 post=95727 time=1210509736
Eh, back to square one... trying to fit some parallel lines with the pole, I've noticed quite a lot of barrel distortion. Here's how much correction is needed to straighten out the pole:

Quote from: nekitamo board=cali1 thread=2693 post=95974 time=1210593674
@ nekitamo: vanishing point works well in your distortion corrected photograph. take a close look at this image and let me know what you think of it.
I agree, it seems like the drone was also "straightened out" with the applied barrel correction. Previously I wasn't able to fit a circle exactly covering its bottom circumference, but now it seems easy.

Here are full-res corrected versions of PICT0016 and PICT0017 in case you need them, both corrected with PS CS3 lens distortion filter (correction factor was 6,00 - whatever it means), with some additional sharpening for PICT0017.

« Last Edit: July 03, 2008, 12:21:44 am by 10538 »