 measure the
repeatability as it is defined in <a href="#rep.ref1">[1]</a> the 
benchmark object needs the following
configuration:</p>

<precode type="matlab">
import benchmarks.*;
repBenchmark = RepeatabilityBenchmark('Mode','Repeatability');
</precode>

<p>To test a feature extractor, benchmark object has a method
<code>testFeatureExtractor(featExtractor, tf, imageAPath,imageBPath)</code>.
The remaining parameters can be obtained from the VGG Affine dataset class
which contains sets of six images with kn