panorama software,virtual tour software
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Joined: 2011-10-12
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2011-10-12
#1

Stitch Problem image number?

I haven't seen anywhere indicated a minimum or ideal number of images to stitch. However, I have been unsuccessful in creating a 360 show by stitching 11 images. The show has a black section between first and last image. I see the examples in the gallery section all use 12 images. So, do you always have to have at least 12 images? Do you always need an even number? Is there a min/max number? Appreciate the help.
Thanks, Al
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Joined: 2002-11-23
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Posts: 5438
2011-10-13
#2

Hi Al,

It depends on the FOV (Field Of View) of the images used for stitching. So long as there is enough to cover the 360 degree wrap with enough overlap for each image pair then it doesn't matter how many images.

What camera and lens are you using?

Regards, Smooth [8D]


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Joined: 2011-10-12
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2011-10-13
#3
We used a Canon 5D with a 17mm lens.
Thanks, Al
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2011-10-13
#4

The 5D is a full frame camera and with the 17mm lens (say 17-40mm L) has a HFOV of 93 degrees at the 17mm setting, you will require 2 rows of 8 images and then a Zenith/Up and Nadir/Down shot.

From top to bottom:

  • 1 Zenith Shot at +90 degrees
  • 8 Rotation Shots at +30 degrees
  • 8 Rotation Shots at -30 degrees
  • 1 Nadir Shot at -90 degrees

18 shots total to cover the complete 360x180 sphere.

The camera will need to rotate around the NPP (No Parallax Point) in portrait orientation on a panohead.

Regards, Smooth [8D]