Hi Kay,
Are you planning to provide another windows build?  At the moment I am 
having problems building but this is due to my lack of knowledge
Brian

On Monday, March 29, 2021 at 8:59:03 PM UTC+11 kfj wrote:

> There is new functionality in lux: I call it 'snap-to-stitch'.
>
> After a few weeks of development, I have gained enough confidence in my 
> implementation of the multilevel blending code to try and use it 
> automatically when a PTO is displayed. Here is the logic:
>
> Per default, lux switches to 'high quality rendering' if there is no 
> activity: neither ongoing user input, nor any background jobs, and no 
> jobs pending in any of the queues. Until recently, 'hq rendering' would 
> display the 'live view' of a PTO file, just with better interpolation. 
> Now what happens is that a stitch or exposure fusion of the current view 
> is produced in the background and displayed once it's ready.
>
> For 'ranked blending' - the default, used for panoramas - this may be 
> hard to notice, but if the live view showed 'hard' borders between the 
> images, with the switch to the blended result these borders should 
> simply 'disappear' after a while. For 'hdr blending' the switch is much 
> more noticeable, because due to the exposure fusion the intensity values 
> change a good deal - blown-out highlights darken and become visible, and 
> dark areas receive fill light.
>
> The snapshot logic remains the same: 'E' produces a snapshot of the live 
> view, 'U' an exposure fusion and 'P' a panorama. As I have explained in 
> my last post, the default for the 'source-like' snapshots, done with 
> 'Shift+E', 'Shift+U' and 'Shift+P' is now to produce a rendition 
> according to the p-line in the PTO.
>
> So trying out the new functionality is simple, especially for panoramas: 
> just load a PTO with a panorama and see the boundaries between the 
> images disappear after some time. Play with it: zoom in and out, look at 
> other places. Once the viewer is at rest, the 'snap-to-stitch' should 
> happen after some time. If you don't like the new mode, you can easily 
> switch it off by pressing F12 or clicking on 'IDLE HQ'. For exposure 
> fusions, you have to invoke lux with --blending=hdr to see the effect.
>
> Of course, all of this is CPU- and memory-intensive, so if you use it 
> with large panoramas, the background task may take long, and - as ever - 
> you may run into memory problems, so you may want to consider adding 
> --build_pyramids=no and possibly even --facet_squash=1 to your command 
> line to lower RAM consumption. The idea is not to use lux' PTO-viewing 
> capabilities to actually *look at* PTOs for any length of time - if you 
> want to do that, stitch/fuse to a single output file and view that 
> instead. What's intended is to give you a tool to inspect what the 
> blended/fused output will look like before you actually commit to 
> stitch/fuse.
>
> And, again, a word of warning: lux' understanding of PTO files is 
> limited to source image projection, position, Ev, lens and vignetting 
> correction - and now the projection, shape, fov and crop from the p-line
> for source-like snapshots. Don't be disappointed or surprised if other 
> stuff from the PTO file is simply ignored. And be aware of the fact that 
> this is new code and not yet well-tested. Start with something simple 
> and work your way up.
>
> Kay
>
>

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