blend seams in panoramic image mosaics
Enblend combines images that partially overlap into a single large image with no seams (panorama generation). This is a command-line tool which performs the actual composition; another tool is required to line up the images ready for input (e.g. Hugin). Enfuse combines images that overlap into a single image with good focus and exposure (exposure stacking for high dynamic range, focus stacking for extended depth-of-field).
Homepage: https://enblend.sourceforge.net/