Hugin is a cross-platform open source Panoramic photography photo stitching program developed by Pablo d Angelo and others. Essentially, Hugin is a GUI frontend for Panorama Tools (software) by Helmut Dersch. Stitching is accomplished by using several overlapping photos taken from the same location, and using control points to align and transform the photos so that they can be blended together to form a larger image. Hugin allows for the easy (optionally automatic) creation of control points between two images, optimization of the image transforms along with a preview window so the user can see whether the panorama is acceptable. Once the preview is correct, the panorama can be fully stitched and transformed and saved in a standard image format.

Its latest version, 0.5 RC2, appeared in September 2005.

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