[hugin-ptx] Re: How to best shoot and stitch this?
Hi there, I have never tried one of what you are describing so I have no insights into the stitching. For the actually taking the photos can you shoot the photos on a cloudy day, or maybe yearly or late in the day when you have indirect lighting? I am hopeful that if you could get the right light it would cut down on the reflection that Marius Loots has in his photos. Which would have to help with the control point finding. -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/1f78da3a-3deb-413e-b6bc-78c9dbafdf8e%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Re: How to best shoot and stitch this?
Hello Brandan, On Tue, 04 Mar 2014 19:08:37 +1100, Brandan bran...@flyingtsalers.com wrote: I am hopeful that if you could get the right light it would cut down on the reflection that Marius Loots has in his photos. Which would have to help with the control point finding. I have taken a number of shots of the walk, and auto control point finding can be a bit problematic, but it isn't too hard to manually add them. I don't think reflection is major issue. I think the main issue is that it is probably impossible to stitch a pano that gives a clear view of all panels. Thanks for your comments. Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb6vq7xnrs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
Hello Marius, On Tue, 04 Mar 2014 17:57:03 +1100, Marius Loots mlo...@medic.up.ac.za wrote: My biggest problem was control points. The granite is highly reflective, which meant that I showed up in each photograph and control points were added automatically linking up myself in all the images. The same with all the images engraved in the granite. I have now retrieved the photos and will gave it another attemp today. Let you know how it went. I don't have the same problems with reflections. The really big issue, I think, is the size and shape. The size precludes a normal pano, and the shape precludes a linear pano. This might be a silly idea, but is there any post processing you can do on the images to counter the reflections that will leave detail that CPFind can use to get control points? If so, then save your .pto and substitute your original filenames and restitch. Please let us know how you get on with your new attempt. Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb6v6ziers0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Re: How to best shoot and stitch this?
Terry Duell wrote: Hello Brandan, On Tue, 04 Mar 2014 19:08:37 +1100, Brandan bran...@flyingtsalers.com wrote: I am hopeful that if you could get the right light it would cut down on the reflection that Marius Loots has in his photos. Which would have to help with the control point finding. I have taken a number of shots of the walk, and auto control point finding can be a bit problematic, but it isn't too hard to manually add them. I don't think I've ever used auto control point creation. When I've tried it I always spend more time editing points, and deleting bad ones, than it takes me to create nigh perfect ones from scratch. BugBear -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/53159EE1.504%40papermule.co.uk. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
Terry Duell wrote: Hello All, The attachment shows the Vietnam Veterans Commemorative Walk, in Seymour, Victoria. It is approx. 80-ish metres long, with about 52 glass panels on each side, each panel approx 2m high, 1.5m wide. . . Does anyone have any comments on whether a pano might be possible, and any ideas on how to tackle it? It's clearly possible - if nothing else it would be possible, if tedious, to simply take 52 shots, each centred on a single panel, pick a single panel as a reference, and correct this panel to be perfectly proportioned and rectilinear. http://hugin.sourceforge.net/tutorials/perspective/en.shtml Then create 52 2-frame panos, each with the reference panel as one picture, and a fresh picture as the other, and correct the shot to the reference panel. Stitch each panorama with the reference panel invisible, and the panel precisely cropped. The resulting images will tessalate perfectly. BugBear -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/5315A03C.8060605%40papermule.co.uk. For more options, visit https://groups.google.com/groups/opt_out.
[hugin-ptx] Re: FOV and orientation
Hallöchen! Torsten Bronger writes: Bruno Postle writes: On 3 March 2014 10:25, Torsten Bronger torsten.bron...@gmail.com wrote: How is the FOV lens parameter in Hugin defined? Always the horizontal axis, always the longer axis, always the shorter axis? Always horizontal, this is inherited from the panotools lens model. Then, I'd like to define the FOV on the *shorter* axis for the Lensfun project. I did it now this way, but for the *longer* axis. This should be compatible with Hugin in almost all cases. [...] However, Hugin must then re-calculate the FOV value returned by the Lensfun database for the particular projection and image orientation. This is still necessary, for portrait orientation. Tschö, Torsten. -- Torsten BrongerJabber ID: torsten.bron...@jabber.rwth-aachen.de or http://bronger-jmp.appspot.com -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/87ioruuvfu.fsf%40physik.rwth-aachen.de. For more options, visit https://groups.google.com/groups/opt_out.
[hugin-ptx] Re: How to best shoot and stitch this?
On Tuesday, March 4, 2014 6:51:13 AM UTC+5:30, Tduell wrote: Hello All, The attachment shows the Vietnam Veterans Commemorative Walk, in Seymour, Victoria. It is approx. 80-ish metres long, with about 52 glass panels on each side, each panel approx 2m high, 1.5m wide. The panels are etched with images from the war, and the names of all the Australian veterans. Shooting and stitching a pano of each side looks like a tricky project. The right side of the attached image is roughly north, so shooting the south side is always going to present a bit of a problem with the light, i.e. the sun is always to the north. On the north side the panels have much better light, but there is vegetation about 4 to 5m from the panels. Standing on the edge of the vegetation, a 24mm lens (36mm equiv) shooting approx normal to the panels gives about 2.5 panel wide coverage. Does anyone have any comments on whether a pano might be possible, and any ideas on how to tackle it? If you can live without the curve of the wall, I would do this: - In a drawing program like gimp, create a line drawing of a stripe with sections having the same aspect ratio as the individual images on the wall - imagine a ladder put down horizontal with rungs upright - Mask the individual normal shots so that there is some of the left and right neighbouring image visible; enough to let the blending software create an invisible blend. - 'pin' the four corners of each image to the corresponding points on your skeleton drawing (the ladder) - use the ladder drawing as reference and optimize the other images for r, p, y, x, y and z. If the otimization fails, you could try adding line control points along the ladder's lines; in my experience with stitching mosaics from handheld shots this has always helped getting the optimization to work and achieving a good result. - leave the placement of the seams to enblend; the curvature might be slight enough not to create too much parallactic error This process might be less work than processing each individual image to be perfectly normal and of the right size and then mosaicing them together. And making a trial with just a few images won't cost you too much time. Kay -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/e9cf0262-8973-4f35-93d2-fe31b616f2b5%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Batch files for making cubes
With a bit of luck I will have a chance to have my hands on the mac in question for an hour or so later today. If I do not get it solved today, then I will give TeamViewer a try. Something like that would make this sort of thing a lot easier. I am not able to find it right now, but I thought I came across a thread talking about if a person uses CPAN to install panotools on a mac and a few other things had already been installed(I forget what they were) that there would be problems and to instead only install a subset of panotools. Does that sound familiar at all? For what it is worth, building a droplet to make cubes and include it with hugin would likely be something that a lot of people would use.I have tried 2 other programs that make cubes and the fastest one that I found would take about 30 times as long for a big pano, and the slowest one I gave up on after an hour. In one case a lot of the users are already using hugin to make the panos, saving them the step of another program to make the cube would be something the whole group would benefit from. Brandan -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/cbc5474c-4257-4177-af9d-fa63238325cd%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
Hallo Terry, Tuesday, March 4, 2014, 10:50:49 AM, you wrote: My biggest problem was control points. The granite is highly reflective, which meant that I showed up in each photograph and control points were added automatically linking up myself in all the images. The same with all the images engraved in the granite. I have now retrieved the photos and will gave it another attemp today. Let you know how it went. Terry I don't have the same problems with reflections. The really big issue, I Terry think, is the size and shape. Terry The size precludes a normal pano, and the shape precludes a linear pano. Terry This might be a silly idea, but is there any post processing you can do on Terry the images to counter the reflections that will leave detail that CPFind Terry can use to get control points? If so, then save your .pto and substitute Terry your original filenames and restitch. Terry Please let us know how you get on with your new attempt. I have uploaded my next attempt at: http://www.flickr.com/photos/marius_loots/12927837453/ One correction, it wasn't my reflection giving so much problems, but the reflections of trees that are repeated across the whole section. But, the 2012 version of hugin CPfind deals a lot better with this than whatever I used with the version current in 2006. The result is still relatively uneven, even with horisontal and vertical control points added and correcting for barrel distortion. The barrel distortion being quite visible in the original images. I think if one has a tripod and keep the distance from the wall constant using a tape measure, the results would be a lot better. In the case of the curved wall one would maybe also keep the angle towards the panel the same. I will give it another go, using the various suggestions that has been made. In summary, I think it would be possible, given a little more time on the photographs than I took (five minutes for 66 photos of a 50 meter stretch). Will update on the revised attempts. Groetnis Marius mailto:mlo...@medic.up.ac.za -- add some chaos to your life and put the world in order http://www.mapungubwe.co.za/ http://www.chaos.co.za/ skype: marius_loots Hierdie boodskap en aanhangsels is aan 'n vrywaringsklousule onderhewig. Volledige besonderhede is by www.it.up.ac.za/documentation/governance/disclaimer/ beskikbaar. -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/1725623304.20140304161547%40medic.up.ac.za. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
My best suggestion would be to make sure that you are always at 90 degree to the tangent of the centre point of the section of the wall you're photographing. And have lots of overlap so you only use the vertical centr of each image. Sent from my BlackBerry® wireless handheld -Original Message- From: Terry Duell tdu...@iinet.net.au Sender: hugin-ptx@googlegroups.com Date: Tue, 04 Mar 2014 16:18:10 To: hugin-ptx@googlegroups.com Reply-To: hugin-ptx@googlegroups.com Subject: Re: [hugin-ptx] How to best shoot and stitch this? On Tue, 04 Mar 2014 13:25:35 +1100, Terry Duell tdu...@iinet.net.au wrote: [snip] Because of the considerable curve of the walk I don't think it is possible to shoot it as a linear pano...i.e. many different camera positions. There is a continual change in Trz value, which is small from one panel to the next and may allow a linear pano stitch of 2 images, each with 2 panels, overlapping one panel for a 3 panel linear stitch, but would I then be able to stitch all these linear panos together? One other approach I have pondered on, is to shoot a couple of panels to my right and and a couple to my left and stitch as normal, and make about 12 or 13 of these sub-panos, each with one panel overlap on the ends with the next sub-pano. Then try to stitch these normal sub-panos together using the one panel overlap and do these as linear panos, but I'm not sure that the overlap will be enough. So, not really sure if any of the above has any hope of success. The more I think about this, the more I am convincing myself that none of the above can produce a reasonable result. Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb6mckmjrs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out. -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/1452044095-1393949306-cardhu_decombobulator_blackberry.rim.net-2131182259-%40b14.c5.bise6.blackberry. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
Hello Paul, On Tue, 04 Mar 2014 20:43:24 +1100, paul womack pwom...@papermule.co.uk wrote: It's clearly possible - if nothing else it would be possible, if tedious, to simply take 52 shots, each centred on a single panel, pick a single panel as a reference, and correct this panel to be perfectly proportioned and rectilinear. http://hugin.sourceforge.net/tutorials/perspective/en.shtml Then create 52 2-frame panos, each with the reference panel as one picture, and a fresh picture as the other, and correct the shot to the reference panel. Stitch each panorama with the reference panel invisible, and the panel precisely cropped. The resulting images will tessalate perfectly. Thanks for your thoughts on this. As you say, possible, but tedious. Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb7vo2tdrs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Re: How to best shoot and stitch this?
Hello Kay, On Tue, 04 Mar 2014 21:19:46 +1100, kfj _...@yahoo.com wrote: If you can live without the curve of the wall, I would do this: - In a drawing program like gimp, create a line drawing of a stripe with sections having the same aspect ratio as the individual images on the wall - imagine a ladder put down horizontal with rungs upright - Mask the individual normal shots so that there is some of the left and right neighbouring image visible; enough to let the blending software create an invisible blend. - 'pin' the four corners of each image to the corresponding points on your skeleton drawing (the ladder) - use the ladder drawing as reference and optimize the other images for r, p, y, x, y and z. If the otimization fails, you could try adding line control points along the ladder's lines; in my experience with stitching mosaics from handheld shots this has always helped getting the optimization to work and achieving a good result. - leave the placement of the seams to enblend; the curvature might be slight enough not to create too much parallactic error This process might be less work than processing each individual image to be perfectly normal and of the right size and then mosaicing them together. And making a trial with just a few images won't cost you too much time. Thanks for that. I'll have a try and see how it goes. Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb7v0fhgrs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Re: How to best shoot and stitch this?
Hello Kay, Sorry if I am a bit dense, but a couple of questions on detail, if I may. On Tue, 04 Mar 2014 21:19:46 +1100, kfj _...@yahoo.com wrote: [snip] If you can live without the curve of the wall, I would do this: - In a drawing program like gimp, create a line drawing of a stripe with sections having the same aspect ratio as the individual images on the wall - imagine a ladder put down horizontal with rungs upright - Mask the individual normal shots so that there is some of the left and right neighbouring image visible; enough to let the blending software create an invisible blend. - 'pin' the four corners of each image to the corresponding points on your skeleton drawing (the ladder) Where is this to be done, in Gimp or Hugin? Can you be a bit more explicit as to what you mean by 'pin' an image to another, it isn't a term I see used in Gimp or Hugin. - use the ladder drawing as reference and optimize the other images for r, p, y, x, y and z. What is the ladder drawing in this context...the bare drawing, or the drawing with all the images 'pinned'? By 'reference' do you mean (in hugin terminology) the 'anchor' for position? Cheers, -- Regards, Terry Duell -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/op.xb8etmv1rs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] Re: How to best shoot and stitch this?
On Wednesday, March 5, 2014 10:00:48 AM UTC+5:30, Tduell wrote: Hello Kay, Sorry if I am a bit dense, but a couple of questions on detail, if I may. On Tue, 04 Mar 2014 21:19:46 +1100, kfj _k...@yahoo.com javascript: wrote: - 'pin' the four corners of each image to the corresponding points on your skeleton drawing (the ladder) Where is this to be done, in Gimp or Hugin? Can you be a bit more explicit as to what you mean by 'pin' an image to another, it isn't a term I see used in Gimp or Hugin. Okay, sorry for the sloppy terminology. By 'pinning' I mean setting control points between a reference image with reference points and corresponding points in partial images which need placement. Imagine, for example, having a set of image tiles and a reference image showing a grid. Pinning would then mean that you set CPs from the four corners of each tile to the grid points where the image is to be placed. Another use of pinning was my method of fixing prominent features in landscape panoramas to an artificial panorama which is used as reference, resulting in what I labeled a 'canonical' panorama with near-perfect horizon and orientation, see https://groups.google.com/forum/#!topic/hugin-ptx/l32L3Iffv6w - use the ladder drawing as reference and optimize the other images for r, p, y, x, y and z. What is the ladder drawing in this context...the bare drawing, or the drawing with all the images 'pinned'? The ladder drawing, in this context, is the line drawing made in gimp which serves as the surface you 'pin' your individual images to. By 'reference' do you mean (in hugin terminology) the 'anchor' for position? Yes, that's what I mean. You are right, anchor is the hugin term, or to be more precise, position anchor. And when you finally stitch the panorama, you simply deactivate this anchor image, resulting in a panorama from the individual photos, held by the invisible 'spine' of the hidden artificial anchor image. The 'pinning' technique has quite a few interesting applications, but I think it isn't used much, since it doesn't occur to many people to mix in images which don't visibly contribute to the final product. Another example of pinning is using a reference showing an azimuthal grid, possibly with the sun's position marked which can be found by using the techniques discussed here: https://groups.google.com/forum/#!topic/hugin-ptx/vWRO7SxdFxQ If your set of photographs show both the nadir and the sun, you are just a few clicks away from a level horizon and a good orientation. Kay -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups hugin and other free panoramic software group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/d89e7a12-826d-4872-9e6f-ffe151c94835%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
