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#1 2008-07-27 11:57:01

Essneter
New member
Registered: 2008-07-11
Posts: 9

How to ensure water reflections stitch well?

I'm leaving for China this week to update my Hong Kong panorama below - that's from 1999 stitched from three scanned Velvia slides. From experience the water reflections can cause major headaches in post.

Is there anything during shooting I can do to ensure water stitches well? And how should I do the stitching of the final image for good stitches? I plan to do a multi-row panorama for maximum megapixe.. lage? ..lation?

http://gallery.harrijahkola.com/scripts/expman.pl?rm=view_photo&photo_id=hongkongnighttimecityscapepanoramaiii51&file=hongkongnighttimecityscapepanoramaiii-35mm-stitched3exposures-master_medium.jpg&dir=galleries/7

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#2 2008-07-27 12:10:52

marco-pano
Member
From: Paris
Registered: 2006-11-16
Posts: 556
Website

Re: How to ensure water reflections stitch well?

Essneter wrote:

... From experience the water reflections can cause major headaches in post...

I agree that moving objects, even slightly moving, are difficult to render. Sometimes easier to buy some pills in pharmacy against headaches lol


Marco, Paris wink
Canon G9 (wide-converter), Raw by ACR or DxO v5.3
Autopano Pro, PS CS3 and time

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#3 2008-07-27 16:17:59

DrSlony
Member
From: Poland, Zielona Góra
Registered: 2007-11-03
Posts: 946
Website

Re: How to ensure water reflections stitch well?

Render using multiband for the water, render again using smartblend for the cityscape, merge the two. Using smartblend on water might give visible seams. Or you could render using smartblend for everything but change the "transition smooth" value to something high like 32 pixels, as described here: http://www.autopano.net/wiki/action/vie … Smartblend

ps. very nice pano :]

Last edited by DrSlony (2008-07-27 16:18:39)

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#4 2008-07-28 13:16:29

GURL
Member
From: Grenoble
Registered: 2005-12-06
Posts: 1935
Website

Re: How to ensure water reflections stitch well?

When the pano is stitched and when waves don't match, the manual "zigzag" method works very well to make stitchs invisible. wink Our eyes are very expert at detecting aligned stich errors but give up to follow zigzags...

This method is described in details in the following post (I would rather use irregular "fractal like" zigzag...) Blending slighly wavy water surfaces http://www.tawbaware.com/forum2/viewtopic.php?t=4301

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#5 2008-07-28 19:03:19

Essneter
New member
Registered: 2008-07-11
Posts: 9

Re: How to ensure water reflections stitch well?

Thanks both, I'll try these when I start stitching!

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