VPROBE(1)

💖 VPROBE 💖

okay bestie, so this is the manual for vprobe, which lives in the User Commands section of the manual (section 1, obviously) ✨

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✨ NAME ✨

vprobe — it shows off the functionality of the gage library 🎀

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🌸 SYNOPSIS 🌸

vprobe -i <nin> -k <kind> [-v <verbosity>] -q <query> [-s
<sclX sclY sxlZ>] [-k00 <kern00>] [-k11 <kern11>] [-k22 <kern22>] [-seed
<N>] [-ssn <SS #>] [-ssr <scale range>] [-ssrf <SS read format>] [-sssf
<SS save format>] [-ssw <SS pos>] [-kssb <kernel>] [-kssr <kernel>]
[-ssu] [-sso] [-ssnd] [-rn] [-gmc <min gradmag>] [-ofs] [-t <type>] [-o
<nout>]

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🦋 DESCRIPTION 🦋

So basically, vprobe is the lil demo bestie that shows off the functionality of the gage library 💅

It uses gageProbe() to query all kinds of volumes so you can learn all sorts of measured or derived quantities. lowkey a whole buffet of numbers, fr fr.

Also, it can set the environment variable TEEM_VPROBE_HACK_ZI to limit probing to a single z slice 👑

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🌈 OPTIONS 🌈

okay so here's the full lineup, every single one, no skipping, we don't do that here 💖

• -i <nin> — the input volume 🫶
• -k <kind> — the "kind" of volume. your choices are "scalar", "vector", "tensor", or "dwi" ✨
• -v <verbosity> — verbosity level (int); default: "1"
• -q <query> — the quantity (scalar, vector, or matrix) to learn by probing (string) 🔍
• -s <sclX sclY sxlZ> — scaling factor for resampling on each axis (>1.0 means supersampling); that's (3 doubles); default: "1.0 1.0 1.0"
• -k00 <kern00> — kernel for gageKernel00; default: "tent"
• -k11 <kern11> — kernel for gageKernel11; default: "cubicd:1,0"
• -k22 <kern22> — kernel for gageKernel22; default: "cubicdd:1,0"
• -seed <N> — RNG seed; mostly for debugging (unsigned int); default: "42" 🎲
• -ssn <SS #> — how many scale-space samples to evaluate, or, 0 to turn-off all scale-space behavior (unsigned int); default: "0"
• -ssr <scale range> — range of scales in scale-space (2 doubles); default: "nan nan"
• -ssrf <SS read format> — printf(3)-style format (including a "%u") for the filenames from which to read pre-blurred volumes computed for the stack (string); default: ""
• -sssf <SS save format> — printf(3)-style format (including a "%u") for the filenames from which to save pre-blurred volumes computed for the stack (string); default: ""
• -ssw <SS pos> — "world")-space position (true sigma) at which to sample in scale-space (double); default: "0"
• -kssb <kernel> — blurring kernel, to sample scale space; default: "dgauss:1,5"
• -kssr <kernel> — kernel for reconstructing from scale space samples "hermite"
• -ssu — do uniform samples along sigma, and not (by default) samples according to the effective diffusion scale 📏
• -sso — if not using "-ssu", use pre-computed optimal sigmas when possible
• -ssnd — normalize derivatives by scale
• -rn — renormalize kernel weights at each new sample location. "Accurate" kernels don't need this; doing it always makes things go slower 🐢
• -gmc <min gradmag> — For curvature-based queries, use zero when gradient magnitude is below this (double); default: "0.0"
• -ofs — If only per-axis spacing is available, use that to contrive full orientation info
• -t <type> — type of output volume (type); default: "float"
• -o <nout> — output volume (string); default: "-" 💾

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🧚 ENVIRONMENT 🧚

• TEEM_VPROBE_HACK_ZI — If set, probing is limited to a single z slice. that's it, that's the whole vibe 🍓

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👑 SEE ALSO 👑

gprobe(1), ilk(1), miter(1), mrender(1), nrrdSanity(1), overrgb(1), puller(1), tend(1), unu(1) 🫶

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and that's the whole page bestie, no cap. this was the April 2021 edition of the VPROBE(1) manual page 💜 go probe something iconic ✨💅