Hugin image stacking1/8/2024 ![]() go to Create Panorama tab and enter the width of your source image (only if you changed FoV in previous step).on Panorama Settings tab choose Fullframe and enter same FoV like on Lens Settings tab (if not already present).back on Lens Settings tab choose Lens type Fullframe fisheye and enter correct HFoV (if not already present).Width and height should now be identical to your source image. on Create Panorama tab uncheck Link width and height and choose Set optimum size -> Maximum size.open Pano Editor (Ctrl+E) and choose Edit->Fit Panorama.on Panorama Settings tab choose Rectilinear ('flat').on Lens settings tab choose Lens type Rectilinear (normal lens), enter an arbitrary value below 180 as Horizontal field of view (if your lens' HFoV is below 180° you can use that value) and click Restore defaults in Advanced section.open PTgui and load a single image with the pixel size you will process.To create a template for the Batch Builder please follow the steps carefully (assuming advanced mode in PTGui pro): You need to open the file with a text editor and put the correct parameters for your lens in the line starting withĪ way to align images directly inside hugin GUI is outlined in Align a stack of photos.Īligning images in PTGui is a bit tricky, but it has the advantage of the Batch Builder and is relatively fast. The hugin windows bundle also includes a batch file called enfuse_align_droplet.bat which calls align_image_stack and passes the aligned images to enfuse for merging. For a fisheye lens you need to specify parameters -e (fisheye lens), -f HFOV (where HFOV is the approximate horizontal field of view in degrees), -m (Field of View), -d (distortion), -i (center shift) and -x -y -z (camera position, since version 2011.5 only). Since version 2011.5 it allows for optimization of camera position, too. ![]() Hugin comes with a command line tool called align_image_stack. All this possibilities together usually allow for a very good alignment. ![]() There should be plenty of control points throughout the whole image. The most recent versions also allow for viewpoint correction (called translation in hugin). Panotools based stitchers allow for optimization of Yaw, Pitch and Roll, field of view, lens correction parameters and center shift. However, since handheld shooting always can cause parallax errors between the bracketed image a perfect alignment is not always possible.īest results can be achieved if all possible image distortions are allowed. Any attempts to align such images should take this into account. Since handheld shooting means a possible displacement in all three spatial directions and fisheyes cover up to 180° or more a back or forth displacement effectively means a different viewpoint. Very wide angle and fisheye lenses are more difficult. PTGui and hugin allow for not linking bracketed shots to the same place in order to compensate for shifts and several HDR programs do a simple alignment as well. ![]() For not so wide rectilinear images this requires a simple image shift. But sometimes this isn't possible and images need to be aligned later. Usually this is done using a sturdy tripod. Shooting for HDR requires the bracketed images to be perfectly aligned.
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