Manual alignment - how?

[rossnixon]

Could I have a step-by step procedure for manual alignment please?

Most of my (aerial) photos have aligned.
I have placed 3 points on one unaligned photo. Then placed the same points on the next unaligned photo. I select these two photos, reset and align selected photos. Nothing shows in the aligned column. What else do I need to do?

[James]

You need to place 4 points on a single unaligned photo, and then those same 4 points on 2 aligned photos, then right click the unaligned photo and click 'align selected photos'.

If you can't find 2 aligned photos with those 4 points then either choose 4 different points or you don't have enough overlap to align your unaligned image.

[rossnixon]

Have tried that with 3,4,5, & 6 points selected on one aligned photo and the next (non-aligned) photo. No luck. Perhaps it is because this pair only has about a 40% overlap. I will resort to some single-photo orthorectifications (in another program) to finish this job.

[Dieter]

You need the Points on two aligned Photos. With only one Phote you get no Coordinates.