Set the features finder

obj.setFeaturesFinder(finderType)
obj.setFeaturesFinder(finderType, 'OptionName',optionValue, ...)

Input

• finderType Feature finder type. One of:
  • OrbFeaturesFinder ORB features finder. See cv.ORB
  • AKAZEFeaturesFinder AKAZE features finder. See cv.AKAZE
  • SurfFeaturesFinder SURF features finder. See cv.SURF (requires xfeatures2d module)
  • SurfFeaturesFinderGpu (requires CUDA and xfeatures2d module)

Options

The following are options for the various finders:

OrbFeaturesFinder

• GridSize default [3,1]
• NFeatures default 1500
• ScaleFactor default 1.3
• NLevels default 5

AKAZEFeaturesFinder

• DescriptorType default 'MLDB'
• DescriptorSize default 0
• DescriptorChannels default 3
• Threshold default 0.001
• NOctaves default 4
• NOctaveLayers default 4
• Diffusivity default PM_G2

SurfFeaturesFinder

• HessThresh default 300.0
• NumOctaves default 3
• NumLayers default 4
• NumOctaveDescr default 3
• NumLayersDesc default 4

The class uses OrbFeaturesFinder by default or SurfFeaturesFinder if xfeatures2d module is available.