Topic: Lumia 1520 / Nokia Camera app not supported?

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Joscelin.Trouwborst (Over 1 year ago)
For the first time I am creating Photosynths of pics shot with my Nokia Lumia 1520, Nokia Camera app. Step 1 does not show thumbnails, but white rectangles with a camera icon in the middle. Next steps look normal and the synth is created. However, the synth result is not that great and what goes simply wrong is the navigation. In step 2 I marked the synth as pano. The synth property shows pano, but navigation is as with a walk. A thing to note about the pics from the app is that they are the high-res ones and that the app does not store a focal lenth with them. (No geo tags either.)

My 2nd synth has the same step 1 issue and is not that smooth either, but has no issue with the navigation type.
NateLawrence (Over 1 year ago)
I've had the issue with white thumbnails before also - usually when using images pulled from video which didn't have any focal length EXIF metadata, so that may be the common factor.

Photosynth may not have the CCD size for the 1520, but other than that there shouldn't be anything about the images that stops the synther from using them as it would any other images.

The navigation in your first example synth is certainly wrong, but I've seen that happen a few times before and Christoph has linked to a similar example.

Do note that it is possible to take a single column of photos that pans up or down, so displaying an Up/Down arrow cursor isn't unimaginable in a panning synth, but you're absolutely right that it doesn't fit in your example.


Your second example synth could have used a few more pictures in it. 
There are a couple of points where part of the scene only appears twice, rather than three times.
I've done my fair share of this too so don't feel bad.
Joscelin.Trouwborst (Over 1 year ago)
Hi Nate, thanks for shining your light in the problems I encounter. Of course curious about the response of the Team about the Focal Length EXIF and the possible need for CCD size and other specifics for Lumia 1520 high-res pics.

Good that I am not the only one with the navigation quirk, then take that the team has it on its list.

I have seen some vertical panos of others and have created some myself this week.

I feel terrible about my 2nd example ;-). Well, I regret it is not working out as I expected, as it is of a special occasion. How is it that you assess the repetition of scene parts, Nate? Have you grown a trained eye for it or do you have a specific approach. So far, I have simply used the rule of thirds grid on my cameras to take care of the overlap. I am not used to take close objects into special account. Is that where I miss out?
NateLawrence (Over 1 year ago)
ツ I'd like to see the Photosynth team respond to you here too.

Having a particular camera's CCD size in Photosynth's camera database would just allow them to reliably compute the focal length for photos taken with that camera if the focal length tag is not filled in.


Regarding photo overlap when turning, the rule of thirds guide is fine. 
That will give you 66.66% overlap between photos if you truly only move one third per photo (which ought to be enough), but for me, yes, I would want to make certain that foreground objects appear completely in a minimum of three photos as I pan by simply choosing something close by to watch.

That amount of overlap is what is required for Photosynth 2 to generate a parallax pano (well, assuming that you have enough close foreground in enough of your photos - details back here: ) which is the primary reason to choose a panning synth over a stitched pano so it's important to keep in mind.
NateLawrence (Over 1 year ago)
It's always difficult to know, when communicating in text, if other people are reading one's words with the intended tone/attitude.

As much as I post here, things could get rather oppressive if it feels like I'm criticizing too much, so I just wanted to make clear that my comment about overlap comes as a helpful reminder, from the position of recently making the same mistake myself (53 times in one morning back in early June =P ) and hopefully not as the resident know-it-all. =\

Photosynth team, please don't back off replying to the original post, just because multiple replies have been made, either here or elsewhere.
Joscelin.Trouwborst (Over 1 year ago)
Much appreciated Nate! 

I am going to try to not just obey my rule of thirds approach on the general scene, but keep foreground objects in mind.

The example 2 spot was difficult, as people wanted to pass the small stairs up and down to the stand. So, I may have to accept it as it is. Got a fav for it already. ;-)