Enblend

Last updated
Original author(s) Andrew Mihal
Developer(s) Hugin team (Christoph Spiel)
Stable release
4.2 [1]   OOjs UI icon edit-ltr-progressive.svg / 29 March 2016;9 years ago (29 March 2016)
Repository
Written in C++
Operating system Cross-platform
Available inEnglish
License GNU GPL 2+
Website enblend.sourceforge.net   OOjs UI icon edit-ltr-progressive.svg

Enblend-Enfuse are open source console application created by Andrew Mihal and mostly maintained by Hugin developers. It consists of Enblend, an image blending tool useful for creating panoramas, and Enfuse, an exposure fusion (HDR merging) and focus stacking tool that combines the depth of field and dynamic range from multiple images of the same scene (bracketing). Enblend-enfuse accepts images already aligned by other methods. [2]

Contents

Technique

Enblend uses the Burt-Adelson spline for blending. [3]

Enfuse uses the Mertens-Kautz-Van Reeth (MKVr) approach to exposure fusion, which does not require reconstructing an HDR intermediate. The MKVr approach involves blending images by quality estimates based on contrast, saturation, and well-exposedness. [4] Enblend extends the estimate with a fourth term of information entropy, and allows the user to decide the weights of each quality estimator as well as specific implementations of the estimators. For example, a basic focus stack is combined in Enfuse by having the quality estimator only consider contrast, and by having the MKVr blending only use the single best-scoring pixel. [2]

Frontends

Enfuse is used in a number of other tools:

References

  1. "Enblend/Enfuse - combine images with no seams" . Retrieved 5 February 2024.
  2. 1 2 Mihal, Andrew; Spiel, Christoph. "Combining Multiple Images with Enfuse 4.2". enblend.sourceforge.net. Retrieved 11 May 2019.
  3. Burt, Peter J.; Adelson, Edward H. (1 October 1983). "A multiresolution spline with application to image mosaics" (PDF). ACM Transactions on Graphics. 2 (4): 217–236. doi:10.1145/245.247. S2CID   316610.
  4. Mertens, Tom; Kautz, Jan; Van Reeth, Frank (2007). "Exposure Fusion". Pacific Graphics. Retrieved 2011-01-21.
  5. "EnfuseGUI". software.bergmark.com.
  6. "MacroFusion: GUI to combine photos to get deeper DOF or HDR". sourceforge.net. 27 November 2016. Retrieved 2017-10-19.