Hi all, Actually, my thesis project is about creating a linear panorama from a series of photos taken along a line. I'm rebuilding the system as described in an article called "Photographing Long Scenes with Multi- Viewpoint Panoramas" [1]. Basically, these are the steps which are performed (a bit simplified):
0. Correct barrel distortion using PTLens to get rectilinear images. 1. Keypoint extraction. 2. Keypoint matching, which finds matches of keypoints for each pair of images. 3. Bundle adjustment, which reconstructs a sparse cloud of 3d scene points (it places the 2d keypoints in 3d space). 4. The bundle adjustment packages also reconstructs where the cameras are positioned in 3d space. 5. The user selects a projection surface by drawing a line in a 2d map generated from the 3d point cloud (just a top down view). 6. All images are backprojected onto this surface. 7. The images are blended together. I haven't finished the whole system yet, but I do have a viewer for the 3d point cloud, in which I can backproject the images using a very simple approach: from each camera viewpoint, I draw the accompanying image at a user specifiable distance. The results are far from perfect, but it is clear that even a simple approach like this does nice tricks. So far, I don't really have a research question (rebuilding a piece of software obviously isn't enough), although I have some ideas. Because for each keypoint both 3d information and 2d information (original keypoint locations) is available, I could warp the images to match the 3d points, such that each image follows its own 3d surface (difficult), or find a "most common" plane per image and position the input images on those surfaces (a lot easier and, I suspect, less prone to error). I have to think of something clever to do after that works. Any ideas welcome of course, although in its current form, it will be quite a challenge to merge my stuff with Hugin. I'm using Noah Snavely's Bundler [2], for one thing, which is currently dependent on Cygwin... So, this is also a GSOC project? Nice :) [1] http://grail.cs.washington.edu/projects/multipano/ [2] http://phototour.cs.washington.edu/bundler/ --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
