Yah, probably would be, especially for complex image sets. Maybe could
make it a manual option user could specify on starting a stitch; maybe
even select which image to start with for each thread. Then if it blows
up, user can try it again without it. But, yah, be just faster to run
seaming in a single thread!
On 04/30/2012 02:54 AM, Monkey wrote:
I suspect that any code required to work out if and how a particular
image layout could be broken down into parallelisable chunks would be
far more complicated and far slower than seaming itself!
David
On Monday, April 30, 2012 10:09:17 AM UTC+1, GnomeNomad wrote:
Could you multi-thread seaming by working from opposite sides of the
panorama simultaneously? For example, a strip panorama - do the seaming
for the first 2 images while also doing the seaming for the last 2
images (assuming there's enough images in the pano for that to work).
Maybe use opposite corners for multi-row/multi-column panos.
On 04/29/2012 09:13 PM, Monkey wrote:
> I did try multi-threading it in a couple of places, but maybe it was
> doing it wrong because it didn't make it any quicker. That was with
> native Windows multithreading - unfortunately Microsoft don't
want you
> to use OpenMP with Visual C++ Express, which is the only option now
> multiblend is multi-platform. Besides which, the seaming
algorithm can't
> be multithreaded (at least not easily), and that and image
loading are
> usually the two slowest parts.
>
> David
>
> On Monday, April 30, 2012 7:24:32 AM UTC+1, GnomeNomad wrote:
>
> Thanks, I thought it was multi-threaded.
>
> On 04/28/2012 11:41 PM, Monkey wrote:
> > The same benefit it has on any system - it's quicker (but not
> better)
> > than Enblend :). The "multi" in multiblend doesn't have anything
> to do
> > with multicore processing - it's (currently) single-threaded.
> >
> > On Sunday, April 29, 2012 1:26:16 AM UTC+1, GnomeNomad wrote:
> >
> > What benefit does multiblend have on uniprocessor systems?
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