Forum : Technical Preview

Get all your questions answered about our latest Photosynth Technical Preview.

Topic: Photosynth type requests...

Report Abuse Report Abuse
I admit readily that current Photosynth types cover most situations, but I have some requests.

I had a zoom type request here...
There are discussion threads on having more vertical coverage. I.e. where only 1 horizontal sweep is not enough to give an impression of the reality. My examples are my synths in the Peruvian Andes and I am coming across this issue again while synthing material from the Cuban Viñales valley. So, I hope a solution for more vertical coverage will come up soon, to my perspective, for panos especially.

How to best shoot a scenery (or create with an app) in a panoramic way, if one cannot turn on the spot, because there is something in the middle or up on a tower ring or only some windows on that tower ring for example. Would using the Wall type suffice or would a different processing type useful? Especially in the last example, could the app help to take the properly overlapping shots from truly different windows on the tower ring?
Nathanael (7 months ago)
I have difficulty picturing what you're describing in the last paragraph, Joscelin.

Could you sketch a diagram or show us a video clip or just put up an example photo album to play through on OneDrive?
A picture is worth a thousand words, as they say.
Ok Nate I will try clarifying, using some of my infamous synths ;-).
Recently, I came across a specific term for this situation. There is a trick for pano photographers to work around it. Sadly, I forgot the term and where I came across it.

Let's take this Spin.

To take a pano of the park, I cannot stand in the middle of this park, as this is where this statue is standing. However, to achieve this, I think one could move around the statue with the back towards it. The radius of the circle would be small enough that the synther could process it as a Panorama properly.

Now what if the radius of this circle would have to be larger, say some 10 to 20 meters. In the spin synth the open top tower, which has a highlight, is an example. The following is taken atop of it.

As can be seen in the spin synth, there is a construction on top of the tower. Those are walls and roof in the middle to protect the staircase from rain. So, one cannot stand in the middle to shoot for a standard pano. Also, the tower is big. I.e. some 10 meters from side to side. As one would not want the outer walls on the photos, but as much vertical coverage of the outside scenery as possible, one would move close to the outside wall to shoot over its edge. Note that the tower is square, which doesn't help moving around in a circle. Also, in tourist season it is crowded, which might make it impossible to get to the best positions.
With my then time Photosynth 1 understanding, I took photo sweeps at each side and corner adding up to a total of 58. This did work out reasonably for Photosynth 1 and unexpectedly fine for ICE. It did not for Photosynth 2. I have spent (a lot of) time to select 13 photos to get an as smooth as possible play in Photosynth 2.
A like situation is this one.
Only this is from the highest ring the public is allowed to go on this church tower. The ring passage is that narrow, that passing other people is a 'touchy' thing ;-). The tower is square and even bigger than the previous one. So, a circular movement is out of the question, there is no other way than square. The approach was the same. Not much of a problem for ICE. Again a lot of selection work to get this into a Ps2 pano.
To make it more complex still. Go back to the Spin and look for the other tower with the dome. This tower is not as big, but has only 1 window through a thick wall on each side of its square shape. I.e. blind corners, no continuous view path possible. One cannot lean out. Same approach again. 32 photos of which 11 remained after again a painstaking selection process.
Now, I myself am not that interested how this would best be done with a (d)slr, but if and how this can be done with the app easily.
You need to be Signed In to add a comment. (Are you new? Sign Up for a free account.)