Re: Precision of the Peleng
- Boy, you really made my day.
These excellent figures rose my envy yesterday and my panogear had to
undergo a meticulous revision. Especially for the Nikon 10,5 which I
always suspected not to deliver the exactest possible results.
I found some slight offsets of the optical axis which didn't affect
the results of my rectilinear lenses but after fixing these the
results with the fisheye became signifcantly better :)
So if we ever get into handshaking distance be prepared to have a
free beer ;)
--- In PanoToolsNG@yahoogroups.com, "dmgalpha" <dmgerman@...> wrote:
> Here is an example of how precise the Peleng can be. This is
> a pano with objects very close (60cm or so, the closest).
> This is the set up:
> * Canon 20d with Peleng 8mm
> * Pinnacle VR head
> * Hugin
> * 8 images around + 1 zenith. The tripod is left in the pano.
> As we know we would ideally like to make the seams of one image
> exactly fall into the next image. MOst of the time they don't quite
> match, but if we mask the edges of the images (creating a stitching
> mask) we get decent results.
> In this image, the seams of one image almost always match the next
> image (or are off by very few pixels). To show you I have created a
> photoshop file, where each layer
> is the peleng image, with no cropping.
> Be warned, these files are large.
> This JPG is created by rolling each image on top of each other, with
> NO stitching masks, no blending and no editing of masks. It is just
> call to PTroller with the mapped images
> If it wasn't for the vignetting of the lens, and the edges of the
> circle it would be difficult to detect the edges.
> and this is the version after enblend has been run on the images:
> Mark Fink has asked what I think about the Pinnacle VR. Well, it is
> very precise. This is are the actual yaw, pitch, and roll for each
> the 8 images:
> p-11.908 r0.327964 y0
> p-10.6091 r-0.993962 y45.9353
> p-9.70911 r-0.589997 y90.7391
> p-8.80028 r0.338645 y135.48
> p-8.79255 r1.69837 y-179.343
> p-9.69431 r2.61333 y-134.485
> p-10.9817 r2.63146 y-90.1969
> p-11.9368 r1.67491 y-44.4717
> p87.7206 r44.5658 y-45.4099
> as you can see the yaws are all within less than 1 degree off. This,
> of course, is no indication exactly how accurate the head is, but
> you an idea of how valuable it is (for indoors panos with close
> objects). the pitch was
> supposed to be 10 degrees, but I did not level the head, so their
> variance doesn't really tell me much.