failure to align images from fisheye lens camera

[jeremyeastwood]

I'm failing on the align step for this (https://www.dropbox.com/s/0om9ixa32z94mv0/images.zip?dl=0) set of images from a fisheye lens camera (from a DJI phantom).  I'm using high-quality align, fisheye camera type and the latest photoscan version (1.1.3).  This is weird, as I've had success with similar image sets, and there's clearly enough overlap with the images.

Any suggestions very much appreciated,

Thanks

[Alexey Pasumansky]

Hello jeremyeastwood,

I think the problem is connected to the fact that there are images captured from almost the same location.

[Alexey Pasumansky]

I've removed the following images and got much better results: 0144, 0146, 150, 151, 156.

[jeremyeastwood]

Thanks for the quick replay as per usual Alexey!

So there's too much overlap in this case?  I've noted quite a large inaccuracy in the gps info embedded in the exif - would you suggest using generic preselection instead?

What settings did you use to get the images to stitch after removing the extra photos you mentioned?

Thanks again for your help

[Alexey Pasumansky]

Hello jeremyeastwood,

Actually I've removed the coordinates at first, as I've also noticed they are very inaccurate. So I've used High + Generic and 40000 + 0 for point limits.

[jeremyeastwood]

Yup, that seemed to work for me - thanks.  The big thing was switching to allow a minimum of 0 tie points - is the downside to this that more noise can be introduced?  Also how did you judge which images to remove to get rid of all the extra noise (I imagine it's a lot of experience, but would be great to be able to automate as much of this process as possible... )?

Thanks again

[Alexey Pasumansky]

Actually, zero tie-point means no tie-point limit (or equal to key-point limit), it should result in the alignment similar to the version 1.0, where tie-point number per image wasn't limited.

[jeremyeastwood]

oh, interesting - would you recommend that as a default then?

[thesystemera]

Ohhh! This is interesting. Can Photoscan now handle GoPro4 fisheye. If so, I'm very excited to give it a go! I have a modified Hero3+ with a flat lense, but the lense quality is not the finest. Must get RageCams.