insta360 One: is there a way to stitch these photos with PTGui?

[Herwig Niggemann]

I wonder, if there is a way to stich the DNG output of an insta360 One (two circular fisheye photos) with ptgui?

Herwig

[Erik Krause]

Am 14.10.2018 um 12:39 schrieb Herwig Niggemann:
> I wonder, if there is a way to stich the DNG output of an insta360 One (two
> circular fisheye photos) with ptgui?

Yes, of course. But I'd convert them to 16 bit TIFF beforehand.

Really? Go to Berlin in GE. The majority of panoramas has recognizable
faces, all unblurred. How would you shoot cityscapes without persons
anyway? And what would a platform having cities in it's name worth
without crowded citiyscapes?

I consider anticipatory obedience very bad.

--
Erik Krause
http://www.erik-krause.de

[PTGui Support]

Hi Herwig,

The insta360 One images (at least the ones I tried) have one of the two
fisheye images mirrored. PTGui cannot unmirror it so you would need to
do this manually.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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[John Houghton]

On Sunday, October 14, 2018 at 11:39:01 AM UTC+1, Herwig Niggemann wrote:

I wonder, if there is a way to stich the DNG output of an insta360 One (two circular fisheye photos) with ptgui?

Herwig, Do you have a sample raw file that you could make available for download so we could see exactly what was involved in stitching the images? 

John

[Roger Williams]

I am slightly surprised that anyone would want to do this as the latest upgrade to insta360 software gives astonishingly accurate stitching, with a second stage of optimizing available if ever necessary. I have used the latter on very few occasions. Of course the final panorama quality is not as good as stitching DSLR images in PTgui but I don’t think that is due entirely to PTGui, outstanding as it certainly is!

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[Herwig Niggemann]

I have an example posted here for anybody who wants to have a look at it

http://bon104.de/IMG_030.dng

It is a genuine raw file with two circular fisheye photos.

The reason why I want to get access to it in stitching is more to be able to use the levelling of the horizon. With my ThetaV I can use PTGui for a perfect levelling. The insta30 raws are not accesible via ptgui for levelling. The stitching of Insta does not always level the panorama well (unless I missed some trick?)

So actually I look for a way to easily get a equirectangular to level it with PTGui, which for me is the best tool for that. 

Right now I use Affinity photo for this, but not with the same quality and result.

Herwig

[John Houghton]

On Monday, October 15, 2018 at 9:13:59 AM UTC+1, Herwig Niggemann wrote:

I have an example posted here for anybody who wants to have a look at it

http://bon104.de/IMG_030.dng

It is a genuine raw file with two circular fisheye photos.

Herwig, Attached, is a V11 project file that will stitch the images. As Joost helpfully pointed out, after generating the tiff file from raw, you need to flip the lower half of the image L-R using Edit->Transform on a 3456x3456 selection in Photoshop. My project file assumes this has been done. You really need to do a calibration exercise to evaluate accurate lens parameters as there is not enough overlap with only two images. To do this, shoot a pair of panoramas with the camera on a tripod, panning the camera through 90 degrees between them Then stitch them together (4 image circles).  Delete one pair of images and save the project as a template for use in future stitches, or save the lens parameters in the lens database.

John