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The Grumpy Editor's hugin experience

Sep 21, 2009, 16:06 (1 Talkback[s])

"More complex changes will require falling back to tools like the GIMP, krita, or cinepaint. Anybody who has tried to join together two or more independent images in those tools will have discovered, however, that certain manipulations fall into a class of their own. For that kind of work, hugin would appear to be the only choice. Your editor has long intended to play with hugin; the threat of having some real work to do finally provided the necessary motivation.

"The problem with just gluing two images together is simple to understand: lenses distort. Even the best lens will transform light differently toward the edges of the image than it does in the middle. Multiple images also suffer from parallax problems, even if the camera is mounted on a tripod. The result is that two overlapping images will not normally join together in a straightforward way - the pieces simply do not fit. Resolving this problem requires distorting the images in fairly tricky ways. The key to the value of a tool like hugin is not in putting images together; it is, instead, in the process of stretching and remapping those images (along with some other details like exposure matching) so that they can be put together. As an added bonus, the ability to correct lens distortion makes some other interesting applications possible."

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