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Re: [OM] PTGui vs PhotoShop photomerge

Subject: Re: [OM] PTGui vs PhotoShop photomerge
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Sat, 17 Jan 2009 13:31:24 -0500
Nice pano and nice portrait.  Are the foxes getting tame?  Looks like 
he/she just posed for you.

Chuck Norcutt

Mike Lazzari wrote:
> The key to Autostitch is getting to know the Options menu. 
> (Edit>Options) It is really powerful. I have just started to get the 
> hang of what works for me. First of all check the appropriate rotation 
> box or you will get some interesting results. Also check the Gain 
> Compensation box to blend the exposure of skies. I set the Output Size 
> to an even multiple of input image height, usually 912 but I don't think 
> it matters much. Finally increase the jpg output quality. If there is 
> one weakness it is the poor jpg algorithm. Otherwise the defaults work 
> well. If your input images are hard to merge because of lack of distinct 
> features try changing the SIFT and RANSAC parameters. I think it helps 
> to list the center image first with difficult files. (see the help files)
> 
> Here is a 17 image merge from yesterday evening. It took less than a 
> minute for the result. Horizon averaged right to left as it is curved. 
> Cropped and some sky cloned where needed. I applied some LCE but note 
> the image is still a little soft. This could be parallax error and/or 
> jpg algorithm. There was no wind. Size reduced with WP and Save for Web 
> which of course added to the problem. The same workflow applied to an 
> individual image gives much sharper results. I think I cannot blame the 
> tool rather my inept use of it. The commercial versions of Autostitch 
> will output tif files and have a prettier interface.
> 
> <http://www.interisland.net/watershed/mike/WalkDogs/Jan09/prairie%20pano.jpg>
> 
> Here's a bonus shot from our walk.
> <http://www.interisland.net/watershed/mike/WalkDogs/Jan09/fox569.jpg>
> 
> Mike
> 
> 
-- 
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