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] 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.
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] How to best shoot and stitch this?
Terry, Have you considered using a flash (or two) to lighten the south side panels? With a bright flash about 2 meters from the camera, you should get some good lighting. Just a thought. Roger On 3/3/2014 8:21 PM, 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. 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? Cheers, -- 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/5315336C.7040701%40cox.net. For more options, visit https://groups.google.com/groups/opt_out.
Re: [hugin-ptx] How to best shoot and stitch this?
Hello Roger, On Tue, 04 Mar 2014 12:59:08 +1100, Roger Goodman rlgood...@cox.net wrote: Terry, Have you considered using a flash (or two) to lighten the south side panels? With a bright flash about 2 meters from the camera, you should get some good lighting. Just a thought. That's not really the main issue. Perhaps I didn't explain my concerns well enough. For a normal single camera position pano, it isn't possible to find one location that will capture the whole length, and provide a good view of each the panels on one side of the walk. 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. Anyone attempted anything similar? 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.xb6ecxjsrs0ygh%40localhost. For more options, visit https://groups.google.com/groups/opt_out.
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.
