Quick run through of camera matching in syntheyes for still frames / modelling ref

[joconnell]

Heya Folks,

One of the lovely folks on the forum was asking about camera matching in syntheyes and I'm going to have a junior building a lot of georgian / victorian architecture from photos soon so I thought I'd do a quick video on how to use syntheyes to make yourself a correctly scaled and aligned camera from a still image to allow easy modelling within the perspective of that photo. Up at https://vimeo.com/126516983 and thankfully slightly shorter than my last tutorial vid

[jasonhuang1115]

Thanks for sharing, John.

[SteveC]

Hi John, thanks for the tutorial, I don't know if you can help but I'm currently looking at buying Syntheyes
but don't know which version to go for, Intro or Pro. Thing is, I would only be using it for camera matching
so wouldn't need all the bells and whistles for full on match moving. Do you think I can get away with the
Intro version just for camera matching or should I go all the way

cheers
Steve

[joconnell]

Hmm, intro would have been fine but it seems the biggest issue on your side is going to be the resolution limit being capped at 1920 x 1080. You could happily resize your images to below this for the purpose of matching but larger might be nicer.

[Morne]

What if you don't have a nice square building that fills almost the entire frame?
I can see the properties of the jpg and the camera it was taken with, but that doesnt seem to be helping much either
I have a couple of shots with mostly sloped uneven terrain, LOADS of trees, and faaaaaaaaaaaaaaaar in the distance some buildings that you can't even make out what is front and what is side.

[theedge]

What if you don't have a nice square building that fills almost the entire frame?
I can see the properties of the jpg and the camera it was taken with, but that doesnt seem to be helping much either
I have a couple of shots with mostly sloped uneven terrain, LOADS of trees, and faaaaaaaaaaaaaaaar in the distance some buildings that you can't even make out what is front and what is side.

If you have a few shots of the site you could try to do a survey-shot processing.

[Morne]

Yes I tried that, but it's not working at all. I have about 15 points I mapped over 4 frames. However, the points overlap a bit and also not, in other words in each frame I only have about 4 or 5 points that corresponds to the next or previous frame. When I solve, it ends up using only 4 trackers for the entire thing and when I check the 3D, the path is nothing what I expect and also, in some cases, the camera even goes upside down?!?

[Morne]

At what point does adding more lines make things worse?
And, why can't I specify the length of more than one line? If I do, specify the length of a second line (y axis), after already specifying x axiz, it changes both lines to the new y axiz length!