Re: How can I combine several images into one?
hi there, some days ago Eric Depagne wrote: > > Hi. > > I'm new to this list, so please forgive me if my question has already been > asked. > > I've made 13 photos from the top of a building, so that all the landscape is > visible. > Now, I want to combine every photos into one. > as i was unsubscribed for sometime i don't know if someone posted the following link. it is a panorama stiching soft as plugin for Gimp :-) i havn't it tested yet, but the results presented on the web look pretty good. http://www.fh-furtwangen.de/~dersch/ hope it still helps regards robert
Re: How can I combine several images into one?
Quickie tutorial on image composting with gimp. by jon winters I grabbed my camera, set it to the lowest resolution and shot a series of images overlapping each one by at least 1/3 of the frame. (sometimes 1/2) I transferred the images into the computer and used Image Magick to shrink them down to 320x240 ( mogrify -geometry 320x240! *.jpg ) Then I opened the first image in gimp and had a look. I needed some room to work so I increased the image size to 1000x400. After resizing the background layer was not full size so I added a new layer and did 'merge visible layers' and let it 'expand' when it asked. To get things started I needed to rotate the first image. I was looking at the computer monitor when doing this. Figured it would make it easy to match the second image if I made the monitor level. I also used the transform tool in 'perspective' mode to modify it a little. (use layers > alpha to selection to select the image) For each image I created a new layer, pasted the image in, and used the transform tool to adjust perspective and rotation. The move tool lets you shift things around and match them up. No big scientific process... just "seat of the pants" gimping. Some of the images took several attempts to match. Remember [Ctrl+z] will undo if you transform or rotate and it doesn't come out correctly. I wish the transform tool had interactive pre-vue, it would have made it a lot easier. After saving the .xcf I flattened it and applied the warp-sharp scriptfu. Then saved the final image as a JPEG. I like how the things in the center of the frame match up and the world gets funky in the fore and background. Everything is there on Obscura if you would like to grab the images and give it a try. (obscura is the rust-box computer under the scanner) http://obscura.obscurasite.com/images/office/ I'll leave the images there for a while and possibly make a proper web tutorial with screengrabs and stuff. Enjoy! -- Jon Winters http://www.obscurasite.com/ OpenVerse http://www.openverse.org/
Re: How can I combine several images into one?
On Thu, 20 Jan 2000, Ian Boreham wrote: > > At 23:31 19/01/00 -0600, Jon Winters wrote: > >I have done a quickie experiment trying to lace a few images together. > >I shot hand-held instead of on a tripod and I didn't bother to lock the > >exposure or correct color. > > > >It is possibl to put photos together into one big seamless but it is a > >LOT of work. > > > >Here are the results: > >http://obscura.obscurasite.com/images/office/ > > Pretty impressive for a quickie manual effort. Which (gimp) tools did you use? > I used the transform tool (rotate and perspective) , and the move tool. I also realize this morning that my office was a complete mess and I should have cleaned it first. :-) Feel free to grab the .xcf and the source images if you would like to try and duplicate the experiment. Its good gimp practice. -- Jon Winters http://www.obscurasite.com/ OpenVerse http://www.openverse.org/
Re: How can I combine several images into one?
> > It is possibl to put photos together into one big seamless but it is a > LOT of work. > > Here are the results: > http://obscura.obscurasite.com/images/office/ > It is exactly what I want to do. Maybe you can tell me (us) how you did? -- Eric Depagne DASGAL - Observatoire de Meudon. First they ignore you, then, they laugh at you, then they fight you, then you win. Gandhi.
Re: How can I combine several images into one?
At 23:31 19/01/00 -0600, Jon Winters wrote: >I have done a quickie experiment trying to lace a few images together. >I shot hand-held instead of on a tripod and I didn't bother to lock the >exposure or correct color. > >It is possibl to put photos together into one big seamless but it is a >LOT of work. > >Here are the results: >http://obscura.obscurasite.com/images/office/ Pretty impressive for a quickie manual effort. Which (gimp) tools did you use? Regards, Ian
Re: How can I combine several images into one?
Ian Boreham wrote: > > Good luck with your respective efforts. I have done a quickie experiment trying to lace a few images together. I shot hand-held instead of on a tripod and I didn't bother to lock the exposure or correct color. It is possibl to put photos together into one big seamless but it is a LOT of work. Here are the results: http://obscura.obscurasite.com/images/office/ Far from perfect. I spent an hour or so working on it. Given more time to work on it I could have made it a lot less noticable. Enjoy! -- Jon Winters visit the Obscura Lounge in OpenVerse http://www.openverse.org/
Re: How can I combine several images into one?
At 09:40 19/01/00 -0600, Jon Winters <[EMAIL PROTECTED]> wrote: > >There exists so called 'stiching' software that is supposed to do this >sort of thing. I think I remember seeing something from Ulead but I >haven't used it. I read some reviews of a number of different stitching programs/plug-ins a while ago (none for Gimp...). If I come across it again I'll post a mention of the names (it may take a while to find them). A similar effect is achieve in Quicktime VR, giving you a panorama that is actually a ring - you can keep going round and round. Some of the software does it all automatically, by analysing the contents of the pictures to work out which bits correspond. The more accurate ones seem to require the user to indicate the corresponding bits. >You might try using the transform tool to shift perspective so that the >component images match up. > >Make a big canvas. >Paste in the starting image. >Paste in the second image near the first. >Then select the second image and shift its perspective so that it matches >up to the first. > >So on and so forth until they all match. Trying to achieve seamless results manually is almost impossible, but it's fun to try. With all the errors (translation, image plane rotation, perspective distortion, exposure differences, moving objects), you have your work cut out for you. If you set the camera up on a tripod, lock exposure settings and take photos at fixed angles, you can minimise some of these problems. I gather from the fact that there were 13 photos, that they probably aren't fixed-angle. >I'll put my camera on a tripod tonight and try it out. Over the next few >days I'll put my camera on a tripod and try this out. I'll post results >to the list. > >I don't know if you'll be able to get the images to match at all on the >edges. Distortion might be too great. You may need some overlap to get >things to look nice. For a panorama made this way, you are trying to simulate a curved image plane with a set of flat ones, and so straight lines end up with kinks or offsets in them at the sub-image boundaries. The stitching software warps the individual images, preferably with a reasonable overlap, to avoid the perspective distortion, and also to account for slight rotations, translations (and scalings?). The warping is not a planar "perspective" warping, but more of a fish-eye effect - the middle of the sub-image needs to stay almost the same, but the distortion increases towards the edges. The results I saw from the stitching software looked pretty good, especially across the middle of the combined image. It tended to fall apart a bit at the top and bottom, where the joins became more obvious. >Interesting question. :-) Indeed. I've harboured a desire to mess around with writing software to do this for some time (where time is the problem - and possibly knowledge and skill). Good luck with your respective efforts. Regards, Ian
Re: How can I combine several images into one?
There exists so called 'stiching' software that is supposed to do this sort of thing. I think I remember seeing something from Ulead but I haven't used it. You might try using the transform tool to shift perspective so that the component images match up. Make a big canvas. Paste in the starting image. Paste in the second image near the first. Then select the second image and shift its perspective so that it matches up to the first. So on and so forth until they all match. I'll put my camera on a tripod tonight and try it out. Over the next few days I'll put my camera on a tripod and try this out. I'll post results to the list. I don't know if you'll be able to get the images to match at all on the edges. Distortion might be too great. You may need some overlap to get things to look nice. Interesting question. :-) -- Jon Winters http://www.obscurasite.com/ OpenVerse http://www.openverse.org/
How can I combine several images into one?
Hi. I'm new to this list, so please forgive me if my question has already been asked. I've made 13 photos from the top of a building, so that all the landscape is visible. Now, I want to combine every photos into one. How can I do that? As I was turning from photo to photo to catch everything, my images cannot be just put one near the other. Does something exist to simulate the rotation of my images? Hoping to have been clear :-)) -- Eric Depagne DASGAL - Observatoire de Meudon. First they ignore you, then, they laugh at you, then they fight you, then you win. Gandhi.
