Measure the object's convexity
#include "dip_measurement.h"
dip_int dip_FeatureConvexityID ( void )
dip_float
dip_FeatureConvexityID returns the ID value of this measurement function, that is registered by Initialise.
This function is a composite measurement function, that returns the ratio between FeatureSize and FeatureConvexArea. A convex object will have a convexity of 1 (or slightly smaller due to discretization issues). Convexity values smaller than 1 indicate that the object boundary has concavities or that the object has holes. This function supports 2D images only.
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.
Measure, ImageChainCode, ChainCodeConvexHull
FeatureAnisotropy2D, FeatureBendingEnergy, FeatureCenter, FeatureChainCodeBendingEnergy, FeatureConvexArea, FeatureConvexPerimeter, FeatureConvexity, FeatureDimension, FeatureExcessKurtosis, FeatureFeret, FeatureGinertia, FeatureGmu, FeatureGravity, FeatureInertia, FeatureLongestChaincodeRun, FeatureMass, FeatureMaxVal, FeatureMaximum, FeatureMean, FeatureMinVal, FeatureMinimum, FeatureMu, FeatureOrientation2D, FeatureP2A, FeaturePerimeter, FeatureRadius, FeatureShape, FeatureSize, FeatureSkewness, FeatureStdDev, FeatureSum, FeatureSurfaceArea