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Bison Landscape (layered output)

PostPosted: Sun Mar 19, 2006 6:56 am
by ckiely
This is a 7 source image pano. 6 of them are standard portrait shots w/ a 50mm prime lens. The last shot was a landscape shot w/ a 50mm lens of just about all of the bison (minus the two on the left).

I did standard color matching and output w/ layers... the bison were moving as the images were being taken. I discarded all of the individual layers other than the background and the landscape one. I used a selection tool to select the area around the animals on the landscape shot, feathered it, select inverse and deleted the rest of the layer. Then flattened the image.

Had the layered output not been available this would have looked dreadful w/ ghosting due to moving animals... nice feature :)

Yellowstone Bison Panoramic #005

Christian Kiely Photography

PostPosted: Sun Mar 19, 2006 7:31 am
by phototrek
This is an amazig trick - thanks for posting!

PostPosted: Sun Mar 19, 2006 8:22 am
by phototrek
So I tried this approach on one of my panos, and found that when I use layered output I get pretty sharp bands between the individual layers where they come together. That's certainly not very pleasing. How do you blend it "softly" in PS? When I use the "Flatten Image" feature, it just slaps 'em together. Re-ordering them will only change the placement of the hard line, but not its existence.

Thanks :)

PostPosted: Sun Mar 19, 2006 8:59 am
Soft blend : the easy way to explain it is "just use the rubber tool" with a soft setting. This way, you can get fuzzy seams...

The actual way most people do that is by using masks (one mask for each layer but the background), because masks can be easily corrected afterward. As a mask could be seen as a place where rubber strokes are stored an can be edited afterwords, the final result is just the same.

PostPosted: Sun Mar 19, 2006 1:35 pm
by Panorama fanatic
2 phototrek: hard borders between source layers in HDRI color correction - is known bug of 1.1. 1.2 beta and 1.1/snandard correction get betetr layers. But not ideal, of cource.

If I need to remove ghost of moving objects or improve quality, maximizing non-blended areas, I do:

1. make layered PSD
2. Turn off all source layers (press right mouse button on 'eye' icon of background in layers list, select 'hide another layers')
3. Find layers with best quality (temporary show/hide each of them)
4. To use part os source layer I select area using one of selecting tools, activate source layer and add mask
5. To get seelction smooth I show 'quick mask' (\ key), and make borders of mask smooth using black of white soft brush. Try to use minimal brush to minimize area with blending, but not too small to see border of your 'patch' :)

ptgui have good tutor

I think, authors of APP must add similar tutor to autopano's wiki

PostPosted: Sun Mar 19, 2006 5:26 pm
by ckiely
Answered above before I could jump back in.

PostPosted: Sun Mar 19, 2006 5:35 pm
by phototrek
Thanks! Iwill try that.

PostPosted: Sun Mar 19, 2006 6:05 pm
by nputtick
That is a lovely photo - but on my monitor there is a clearly visible vertical change in the colour of the snow. It is directly in line with the single tree (in front of the lighter snow-covered hump), and exactly half way between the 2 bison on the left and the leftmost bison of the larger group. To the right of that line, the colour balance of the snow is more blue, to the left, more pink. Could that discontinuity correspond to the edge of the landscape image? Preumably if so it could be corrected by matching the colour in the 2 layers.


PostPosted: Sun Mar 19, 2006 6:10 pm
by nputtick
The discontinuity is directly above this mark (if you scroll back up)

PostPosted: Sun Mar 19, 2006 6:28 pm
by ckiely
Yes, I noticed that after I posted. I fixed it since then, the image above was from a 5% render. The full version is taken care of, but thanks. It's a long story...

EDIT: I uploaded a new photo... you shouldn't see it now.

PostPosted: Mon Mar 20, 2006 12:04 am
by nputtick
Christian - that's much better. And the bison have moved!!!!