Re: [hugin-ptx] Some practical Layout issues
On Wed 09-Dec-2009 at 10:54 +0100, Oskar Sander wrote: 1. I would like to merge the lines manually in a program like Gimp or Photoshop as different layers. Is it possible to get the negative space (black) of these uncropped lines as transparent alpha channels straight out of hugin? Maybe this is what already happens in the output? Yes, Hugin creates images with an alpha channel which is transparent in the 'black' areas. 2. Some parts become more smeared than would be expected based on the quality of the photos, see for example the mid section of this strip [3]. I recollect a discussion here that if the overlap of images are large, image fusion would be done rather than seam blending. Is that so and is there a way to prioritize seam blending?In this case when the images are not perfectly aligned, the fusion would just smear. No, by default Hugin always uses seam blending with enblend, it only uses fusion with enfuse when it finds well-aligned bracketed stacks. Alternatively if you select 'blended then fused' it will seam blend images with a similar exposure, then fuse all these layers together at the end. ..but I don't think either of these things is happening here. Basically enblend isn't very good at joining a blurred photo with a sharp photo because it blends each level of detail separately - You get a sharp transition between small scale detail which is normally not noticeable. This may be a case where you could try blending entirely with enfuse instead of enblend (just swap the executable names), the transitions between photos will be more noticeable but sharper photos will dominate. -- Bruno -- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to hugin-ptx@googlegroups.com To unsubscribe from this group, send email to hugin-ptx+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/hugin-ptx
[hugin-ptx] Some practical Layout issues
I've been playing with the layout branch, using a test project with UW-footage [1] Because this project was done with too little overlap between lines, i have made separate projects for each line first, to see if there is enough overlap anywhere to run it through Hugin, the three first lines are shown here [2]. It is obvious that the low contrast, low overlap and uneven focus, because of motion blur and wrong focus setting makes this a very challenging project to use Hugin and automated CP detection on. On the other hand, the detail resolution of the end result is not that important, it is the overview that is the goal, so some misfit is ok. I have a couple of questions: 1. I would like to merge the lines manually in a program like Gimp or Photoshop as different layers. Is it possible to get the negative space (black) of these uncropped lines as transparent alpha channels straight out of hugin? Maybe this is what already happens in the output? 2. Some parts become more smeared than would be expected based on the quality of the photos, see for example the mid section of this strip [3]. I recollect a discussion here that if the overlap of images are large, image fusion would be done rather than seam blending. Is that so and is there a way to prioritize seam blending?In this case when the images are not perfectly aligned, the fusion would just smear. Cheers OS [1] 180 images in 11 roughly parallel vertical lines of the inside of a hull. Photographed with a NikonD300 and a 36mm eqv lens. (not wide enough for this application!) [2] http://picasaweb.google.se/oskar.sander/HuginMosaic# [3] http://picasaweb.google.se/oskar.sander/HuginMosaic#5413164953226501218 -- /O -- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to hugin-ptx@googlegroups.com To unsubscribe from this group, send email to hugin-ptx+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/hugin-ptx
