MRITOSELF(1)

💖 mritoself(1) — General Commands Manual 💖

okay bestie, welcome to mritoself(1) — this is the General Commands Manual page for it, and it's giving very specific registration energy. ✨

✨ NAME ✨

mritoself — intra-subject registration of two volumetric data sets. 💅

✨ SYNOPSIS ✨

mritoself [<options>] <source.mnc> <target.mnc> <xform.xfm>

✨ DESCRIPTION ✨

Mritoself estimates the linear transformation required to register two volumetric data sets from the same subject — that's intra-subject registration, iykyk. 🧠✨

The procedure was designed and tested on MRI data, although other modalities can be registered as well (but this has not yet been tested). No cap, that parenthetical is doing important work. 🫶

Mritoself estimates the registration transformation in multiple steps, each successive step refining the previous fit. Currently, the sequence of resamplings, crops, blurs and fits are hard-coded, although there are a number of options to force specific fitting strategies for certain types of data. 🎀

🌸 Fitting Data 🌸

By default, Mritoself uses a mutual information objective function evaluated on the original (unblurred) data volumes. Literally the unblurred ones, bestie. 💖

Optionally, the data can be blurred before fitting with the -blur option. 🦋

If the -gradient option is specified, then the gradient magnitude of the blurred images is used in the fitting process. ⭐

💅 Fitting Strategy 💅

A two step fitting process is then applied to calculate the registration transformation. Periodt. 💅

The first begins with an identity transformation, 7.3mm steps, and a medium-small (3mm) simplex to find an reasonable initial transformation. Yes, that's the move. 🌀

The second (and last) fit is estimated with 4.3mm steps and a small simplex (1.5mm). Slay. ✨

If an initial transformation is available, it can be used in the first fit described above. 🫶

Also present, exactly as written: option <val>: description of option. Keeping the lore intact. 📜

🎀 Generic options 🎀

• -help — Print summary of command-line options and abort. 💀

🦋 EXAMPLES 🦋

This section is empty in the original page — no examples listed, bestie. Not a single one. 😭

💀 KNOWN BUGS 💀

Also empty in the original page — no known bugs were listed here. That's literally all it says. 🙈

🌟 AUTHOR 🌟

Greg Ward and Louis Collins. 👑

🍓 COPYRIGHT 🍓

Copyright (c) 1996 by Greg Ward and Louis Collins

That's the whole mritoself(1) page from the General Commands Manual, bestie — footer just says MRITOSELF(1), and there's no date shown on this copy. Mwah 💋