PTGui Support Google Group

Re: [PTGui] Re: no performance plus with dual xeon and 8 x 1tb HDD raid0

supp...@ptgui.com (PTGui Support) — Thu, 12 Dec 2009 09:31:23 UT

That really depends on the project and the hardware..
> I know panini and
They definately do benefit from the recent improvements in virtual
memory handling.
Also the HDR/fusion algorithms are already optimized for speed in many
ways. But they're complex algorithms requiring a fair bit of processing.

Re: Cant get it right

j.hough...@ntlworld.com (John Houghton) — Thu, 12 Dec 2009 08:54:05 UT

Justin sent me a set of images which stitched very well, but through
some oversight only cover about 80% of the 360x180 view. There is
evidence of a small amount of parallax, which should be possible to
eliminate by a small adjustment of the camera position:
[link]
John

Re: [PTGui] Re: Cant get it right

mick.cr...@gmail.com (michael crane) — Wed, 12 Dec 2009 22:30:41 UT

2009/12/16 Juz H <justi...@netspace.net.au>:

I don't know I follow what you mean.
What I meant is.
put some tape on a window and photograph it
once so the tape is in the left of the viewfinder about a 1/4 in
second spin the camera so the tape is on the right of the viewfinder
about a 1/4 in

Re: Cant get it right

justi...@netspace.net.au (Juz H) — Wed, 12 Dec 2009 22:05:40 UT

Hi Michael, sorry mate I assumed that it would be taken for granted
that my testing wouldnt include the outer edges of the lens.Testing
was done to the limit of where I could see lens distortion starting to
come in. What Im getting at is that there was no parallax errors for a
majority of the lens, usable lens :)

Re: no performance plus with dual xeon and 8 x 1tb HDD raid0

image...@gmail.com (image360@gmail.com) — Wed, 12 Dec 2009 17:04:50 UT

this can kind of be done already, while not an automated solution it
does work and is completely doable today.

In the Advanced section of Create Panorama tab you can choose which
source images to include in the stitch. If you process a sub selection
you can get a partial or imtermediate stitch section which can be

Re: no performance plus with dual xeon and 8 x 1tb HDD raid0

jgee...@gmail.com (Joergen Geerds) — Wed, 12 Dec 2009 16:12:04 UT

how much less performance do we get from the code when we use
mercator, or from modified cylindrical projections? I know panini and
VP's aren't optimized at all and aren't using cropped tiles for temp,
but are all other cases also affected by that, or at least partially?
I also think that HDR projects are far too popular now to not to

Re: [PTGui] Re: no performance plus with dual xeon and 8 x 1tb HDD raid0

supp...@ptgui.com (PTGui Support) — Wed, 12 Dec 2009 13:10:14 UT

Rectilinear, cylindrical or equirectangular in fact..

This should make no difference at all for PTGui. If there's any
difference in speed this would be due to hardware or driver issues. I
suspect your particular RAID system is not working like it should in Win 7.

A simple gigapixel panorama should be doable in one to a few hours at

Re: no performance plus with dual xeon and 8 x 1tb HDD raid0

i...@querdenker-ltd.de (Querdenker Ltd.) — Wed, 12 Dec 2009 12:17:38 UT

made so many tests with different setup of my system

conclusion
- rectangular is way the fastest stitching possibility
- stitching in vista is much faster than in windows 7
- you cannot have enough ram ;) tomorrow I will have 72gb ^^
- raid systems are not as fast as hoped
- if you want to stitch very big gigapixel panoramas, you need at

PTGui 8.3.6

supp...@ptgui.com (PTGui Support) — Wed, 12 Dec 2009 11:49:22 UT

Hi all,

Version 8.3.6 is now available, fixing a bug which caused random crashes.

Joost

Re: [PTGui] Re: banding when stitching RAW files

ke...@vortex.co.uk (Keith Martin) — Wed, 12 Dec 2009 10:20:11 UT

Sometime around 16/12/09 (at 12:21 +0900) Roger D. Williams said:

Good point. That's a kind of safety net for when mistakes are made,
whether on purpose or not.

Re: [PTGui] Re: banding when stitching RAW files

ro...@adex-japan.com (Roger D. Williams) — Wed, 12 Dec 2009 03:21:51 UT

On Wed, 16 Dec 2009 07:59:24 +0900, Keith Martin <ke...@vortex.co.uk>
wrote:

That said, PTgui can also do a remarkably fine job of blending shots
that are deliberately taken a different exposures... It's not only
saved panoramas where I forgot to take the camera off "Auto,"it's
also done well blending a panorama where, for instance, I was

[PTGui] Re: banding when stitching RAW files

ke...@vortex.co.uk (Keith Martin) — Tue, 12 Dec 2009 22:59:24 UT

Sometime around 15/12/09 (at 14:10 -0800) Al said:

One of the most important things to do when shooting imags for
panorama stitching is to work in complete manual mode. For good
results nothing at all must change from one shot to the next;
exposure, white balance, focus, ISO... nothing.

Re: banding when stitching RAW files

akir...@hotmail.com (Al) — Tue, 12 Dec 2009 22:10:23 UT

Erik, thanks for those great suggestions.

It's true that I've got a lot of overlap. Sometimes, in previous
attempts, I thought I had enough overlap, then the program couldn't
find enough control points. It could also be that the orientation of
the image wasn't quite the same as the others.

control point generator

mick.cr...@gmail.com (michael crane) — Tue, 12 Dec 2009 21:26:10 UT

how does the control point generator work ?
Does it only compare image to image with no ( lens) parameters ?
regards

MIck

Re: banding when stitching RAW files

erik.kra...@gmx.de (Erik Krause) — Tue, 12 Dec 2009 21:17:38 UT

Al wrote:

Ok. My suspicion was wrong. You can see the camera response curve on
Exposure/HDR tab, but it wasn't changed from default in your case.

You took the images with a far too large overlap. Images 0, 2, 4 and 7
would cover the whole panorama. This alone probably wouldn't cause any