DIPlib Documentation - ©1995-2011 Quantitative Imaging Group, Delft University of Technology.

# FeatureRadius

Measure the object's radius statistics

## SYNOPSIS

`#include "dip_measurement.h"`

dip_int dip_FeatureRadiusID ( void )

## OUTPUT DATA TYPE

`dip_FloatArray`

## FUNCTION

`dip_FeatureRadiusID` returns the ID value of this measurement function, that is registered by `Initialise`.

## NOTE

If any physical dimensions are passed to this function through `Measure`, only the sample distance along the first dimension are used. All other dimensions are assumed to be sampled the same way. This produces incorrect results for anisotropically sampled images.

## NOTE

This function uses chain codes. It expects each measured object to be compact, that is, to have only one chain code. Additional chain codes are ignored, meaning that non-compact objects are not measured properly. Take care in providing the correct connectivity value: if you object is compact only with 2-connectivity, this measure will fail if you call `Measure` with a value of 1 for the connectivity.

## SEE ALSO

`Measure`, `ImageChainCode`, `ChainCodeGetRadius`

`FeatureDimension`, `FeatureSize`, `FeatureCenter`, `FeatureGravity`, `FeatureMaximum`, `FeatureMinimum`, `FeatureFeret`, `FeatureMaxVal`, `FeatureMinVal`, `FeatureMean`, `FeatureStdDev`, `FeatureSum`, `FeatureMass`, `FeaturePerimeter`, `FeatureP2A`, `FeatureShape`, `FeatureSurfaceArea`, `FeatureAnisotropy2D`, `FeatureInertia`, `FeatureGinertia`, `FeatureMu`, `FeatureGmu`, `FeatureBendingEnergy`, `FeatureChainCodeBendingEnergy`, `FeatureExcessKurtosis`, `FeatureLongestChaincodeRun`, `FeatureOrientation2D`, `FeatureSkewness`