HUGIN_HDRMERGE("1")

💅 hugin_hdrmerge — the manual page, bestie edition ✨

okay so you opened hugin_hdrmerge("1") (that's section 1 of the hugin manual, mwah) and now you're here. slay. this is the whole thing, no skips, no cap. 🫶

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🌸 NAME 🌸

hugin_hdrmerge — literally merges overlapping images together. that's the whole job. iconic behaviour honestly. 💖

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🎀 SYNOPSIS 🎀

hugin_hdrmerge [options] -o output.exr input-files

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🦋 DESCRIPTION 🦋

TODO.

not me telling you the description is literally TODO. — yes bestie, that's genuinely what the page says. the main character hasn't written her backstory yet. we respect the mystery. 🙈

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✨ OPTIONS ✨

• -o prefix — the output file. your prefix, your result. 💅
• -m mode — the merge mode, and it can be one of: avg, avg_slow, khan (that's the default, bestie, khan is the main character here 👑). also important: if you're in avg, then no -i, -s, or -d options apply. like, they just don't show up to the party. 🚫
• -i iter — how many iterations to execute (default is 1). one. one iteration. keep it cute. 🌸
• -c — only consider pixels that are defined in all images. this one is avg mode only, fyi. 🫶
• -s file — debug files to save each iteration, and it can be one of:
  • a — all debug files (can only be used alone — do not pair it up, it's a solo act 💅)
  • w — calculated weights from each iteration
  • r — result image from each iteration
  • s — source images before processing

and ok so: if verbose is >= 3, all debug files are output unless specified. 🦋

• -a calcs — apply one or more advanced calculations, and it can be one or more of:
  • b — biasing weights logarithmically
  • c — choose pixels with highest weight instead of averaging (this one overrides options -a b and -a d, she said what she said 😤)
  • d — choose a pixel with the highest weight instead of averaging when all pixel weights are within 10% of each other
  • h — favour a high signal to noise ratio
  • i — ignore alpha channel
• -e — export each initial weight to <input_file_paths>_iw.<ext>. very giving file management 🎀
• -l — load a previously exported initial weight with respect to the input file names.

⚠️ NOTE: if both -e and -l options are on, the program will calculate and save the initial weights, then wait until user indicates that it can continue by loading the previously saved weights. so she saves, then she waits for you. patient queen. 🧚

• -v — verbose, print progress messages. repeat it for even more verbose output — yes, you can stack her. 🌈
• -h — display help summary. the classic. 💜

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👑 AUTHORS 👑

Written by Jing Jin. Also contains contributions from Pablo d'Angelo, Douglas Wilkins, Ippei Ukai, Ed Halley, Bruno Postle, Gerry Patterson and Brent Townshend. a whole group chat of legends, fr fr. 🔥

This man page was written by Cyril Brulebois <cyril.brulebois@enst-bretagne.fr> and is licensed under the same terms as the hugin package itself. 📜

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okay that's the whole page, you ate that. 💅✨

Version: 2025.0.1 — dated 2026-09-22 — hugin_hdrmerge("1"), signing off bestie 🫶🎀💖