gprobe - Man Page
shows off the functionality of the gage library
Synopsis
gprobe -i <nin> -k <kind> [-v <verbosity>] -q <query> [-gmc <min gradmag>] [-ofs] [-seed <N>] [-c <bool>] [-k00 <kern00>] [-k11 <kern11>] [-k22 <kern22>] [-rn] [-ssn <SS #>] [-ssr <scale range>] [-kssb <kernel>] [-kssr <kernel>] [-ssu] [-sso] [-ssnd] [-ssnb <bias>] [-ssf <SS read/save format>] [-s <sclX xclY sxlZ>] [-ssp <pos>] [-pg <nrrd>] [-pi <nrrd>] [-pp <pos ...>] [-eps <epsilon>] [-psi <p>] [-t <type>] [-o <nout>]
Description
Shows off the functionality of the gage library. Uses gageProbe() to query various kinds of volumes to learn various measured or derived quantities.
Options
- -i <nin>
input volume
- -k <kind>
“kind” of volume (“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)
- -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
- -seed <N>
RNG seed; mostly for debugging (unsigned int); default: “42”
- -c <bool>
clamp positions as part of probing (bool); default: “false”
- -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”
- -rn
renormalize kernel weights at each new sample location. “Accurate” kernels don’t need this; doing it always makes things go slower
- -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”
- -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
- -ssnb <bias>
bias on scale-based derivative normalization (double); default: “0.0”
- -ssf <SS read/save format>
printf(3)-style format (including a “%u”) for the filenames from which to read pre-blurred volumes computed for the stack, if they exist and match the stack parameters, and where to save them if they had to be re-computed. Leave this as empty string to disable this. (string); default: “”
- -s <sclX sclY sxlZ>
scaling factor for resampling on each axis (>1.0: supersampling); use “-ssp” (and “-psi”) to specify scale position of sampling (3 doubles); default: “1 1 1”
- -ssp <pos>
when using scale-space, scale-position at which to probe (double); default: “0”
- -pg <nrrd>
overrides “-s”: 2-D nrrd which specifies origin and direction vectors for sampling grid; default: “”
- -pi <nrrd>
overrides “-pv”: probes at this list of 3-vec or 4-vec positions; default: “”
- -pp <pos ...>
overrides “-pi”: only sample at this specified point (3..4 doubles); default: “nan nan”
- -eps <epsilon>
if non-zero, and if query is a scalar, and if using “-pp” to query at a single point, then do epsilon offset probes to calculate discrete differences, to find the numerical gradient and hessian (for debugging) (double); default: “0”
- -psi <p>
whether the probe location specification (by any of the four previous flags) are in index space (bool); default: “false”
- -t <type>
type of output volume (type); default: “float”
- -o <nout>
output volume (string); default: “-”
See Also
ilk(1), miter(1), mrender(1), nrrdSanity(1), overrgb(1), puller(1), tend(1), unu(1), vprobe(1)
Referenced By
ilk(1), miter(1), mrender(1), nrrdSanity(1), overrgb(1), puller(1), tend(1), unu(1), vprobe(1).