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ConvexHullFeatures Class Reference

Compute object features related to the convex hull. More...

#include <vigra/accumulator.hxx>

Classes

struct  Impl
 Result type of the covex hull feature calculation. More...
 

Detailed Description

Compute object features related to the convex hull.

AccumulatorChain must be used with CoupledIterator in order to have access to pixel coordinates. The convex hull features are only available when WITH_LEMON is set.

Minimal example how to calculate the features:

// "labels" is the array with the region labels
// Set up the accumulator chain and ignore the zero label
chain.ignoreLabel(0);
// Extract the features
extractFeatures(labels, chain);
// Finalize the calculation for label 1
getAccumulator<ConvexHullFeatures>(chain, 1).finalize();
// Get the features
... = getAccumulator<ConvexHullFeatures>(chain, 1).inputCenter();
Create an array of accumulator chains containing the selected per-region and global statistics and th...
Definition: accumulator.hxx:2383
Compute object features related to the convex hull.
Definition: accumulator.hxx:6380
void extractFeatures(...)
Definition: multi_iterator_coupled.hxx:731
Wrapper for MakeTypeList that additionally performs tag standardization.
Definition: accumulator.hxx:408

The documentation for this class was generated from the following file:

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de)
Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany

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vigra 1.11.1