levelset(1)

📦
version 3.3.1p2 · 7 versions
, in ubuntu stonking

✨ levelset(1) ✨

okay bestie, so this page is levelset(1) from The Computational Morphometry Toolkit (aka CMTK, the icon itself 🫶) and it's literally your girl for making a foreground/background mask out of a brain pic. no cap.

🌸 NAME 🌸

levelset — levelset segmentation, periodt 💅

🦋 SYNOPSIS 🦋

levelset InputImage OutputImage

like that's it. two arguments. you got this 💖

🎀 DESCRIPTION 🎀

Levelset-type segmentation of foreground/background using minimum regional variance energy. translation: it looks at your image, vibes out which pixels are "thing" and which are "not thing," and evolves a levelset function until the energy is giving minimum regional variance 🧚✨

👑 OPTIONS 👑

🌈 Global Toolkit Options (these are shared by all CMTK tools)

these ones are the universal besties — every CMTK tool has them 💖

  • --help — spills the list of basic command line options to standard output 📝
  • --help-all — same but the complete list, basic and advanced, to standard output 🔥
  • --wiki — writes the command line options as MediaWiki markup to standard output, for all my wiki girlies 🎀
  • --man — writes man page source in 'nroff' markup to standard output. meta, honestly 💀
  • --xml — writes the command line syntax specification in XML markup to standard output (it's for Slicer integration, iykyk) ⭐
  • --version — writes the toolkit version to standard output 👑
  • --echo — writes the current command line to standard output, so you can see exactly what you did 🫶
  • --verbose-level <integer> — set the verbosity level 🗣️
  • --verbose, -v — increment verbosity level by 1. lowkey deprecated, but supported for backward compatibility so nobody's workflow breaks 🙈
  • --threads <integer> — set the maximum number of parallel threads (for POSIX threads and OpenMP). go fast, queen ⚡

💜 Main Options

  • --binarize, -b — binarize the levelset and write it as a byte mask, instead of writing the floating-point levelset function itself 🌸

🧚 These parameters control the initialization of the levelset function

  • --scale-initial-sphere <double> — scale factor to reduce or increase the size of the initial foreground region sphere. [Default: 1] 🔮

💀 These parameters control the evolution of the levelset function

  • --iterations <integer>, -n <integer> — maximum number of iterations [Default: 100] 🔁
  • --force-iterations, -f — force that given number of iterations, even when convergence has been detected. yes, it will keep going. it is determined 💅
  • --filter-sigma <double>, -s <double> — Gaussian filter sigma in world coordinate units (e.g., mm) [Default: 2] 🎀
  • --delta <double>, -d <double> — time constant for levelset evolution; must be > 0; larger is faster [Default: 0.1] 🏃♀️
  • --levelset-threshold <double>, -t <double> — levelset threshold: the levelset function is truncated at +/- this value [Default: 1] ✂️

🍓 Image/Transformation Database

  • --db <string> — path to the image/transformation database that should be updated with the newly created image. [Default: NONE] 🗄️

💖 AUTHORS 💖

Torsten Rohlfing, with contributions from Michael P. Hasak, Greg Jefferis, Calvin R. Maurer, Daniel B. Russakoff, and Yaroslav Halchenko 🌟

⭐ LICENSE ⭐

http://www.fsf.org/licensing/licenses/gpl.html

💀 BUGS 💀

Report bugs at http://nitrc.org/projects/cmtk/ — do it, they're nice about it 🙈

🌸 ACKNOWLEDGMENTS 🌸

CMTK is developed with support from the NIAAA under Grant AA021697, National Consortium on Alcohol and Neurodevelopment in Adolescence (N-CANDA): Data Integration Component. From April 2009 through September 2011, CMTK development and maintenance was supported by the NIBIB under Grant EB008381. 🫶✨

and that's the whole page, bestie — this was CMTK 3.3.1p2, dated Jun 24 2026, and it's levelset(1). go segment something iconic, you're doing amazing 💅👑
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