FeatureExtractor.hpp File Reference

Concrete feature extractor using analyzer-guided extraction. More...

#include "ExtractionHelper.hpp"
#include "MayaFlux/EnumUtils.hpp"
#include "UniversalExtractor.hpp"
#include "MayaFlux/Yantra/OperationSpec/OperationHelper.hpp"

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Classes
class	MayaFlux::Yantra::FeatureExtractor< InputType, OutputType >
	Analyzer-guided feature extractor with enum-based configuration. More...

Namespaces
namespace	MayaFlux
	Main namespace for the Maya Flux audio engine.
namespace	MayaFlux::Yantra

Typedefs
using	MayaFlux::Yantra::StandardFeatureExtractor = FeatureExtractor< std::vector< Kakshya::DataVariant >, std::vector< std::vector< double > > >
	Standard feature extractor: vector of [DataVariant -> vector<double>].
using	MayaFlux::Yantra::MatrixFeatureExtractor = FeatureExtractor< std::vector< Kakshya::DataVariant >, Eigen::MatrixXd >
	Eigen Matrix feature extractor: DataVariant -> Matrixxd.
using	MayaFlux::Yantra::ContainerFeatureExtractor = FeatureExtractor< std::shared_ptr< Kakshya::SignalSourceContainer >, std::vector< std::vector< double > > >
	Container feature extractor: SignalContainer -> multi vector<double>
using	MayaFlux::Yantra::RegionFeatureExtractor = FeatureExtractor< Kakshya::Region, std::vector< std::vector< double > > >
	Region feature extractor: Region -> multi vector<double>
using	MayaFlux::Yantra::VariantFeatureExtractor = FeatureExtractor< std::vector< Kakshya::DataVariant >, std::vector< Kakshya::DataVariant > >
	Variant feature extractor: DataVariant -> DataVariant.

Enumerations
enum class	MayaFlux::Yantra::ExtractionMethod : uint8_t {   MayaFlux::Yantra::HIGH_ENERGY_DATA , MayaFlux::Yantra::PEAK_DATA , MayaFlux::Yantra::OUTLIER_DATA , MayaFlux::Yantra::HIGH_SPECTRAL_DATA ,   MayaFlux::Yantra::ABOVE_MEAN_DATA , MayaFlux::Yantra::OVERLAPPING_WINDOWS , MayaFlux::Yantra::ZERO_CROSSING_DATA , MayaFlux::Yantra::SILENCE_DATA ,   MayaFlux::Yantra::ONSET_DATA }
	Supported extraction methods for FeatureExtractor. More...

Detailed Description

Concrete feature extractor using analyzer-guided extraction.

FeatureExtractor demonstrates the modern extraction paradigm by using analyzers (EnergyAnalyzer, StatisticalAnalyzer) to identify regions of interest, then extracting the actual data from those regions. Uses enum-based configuration instead of string parsing for type safety and performance.

Example Usage:

// Extract high-energy audio data
auto extractor = std::make_shared<StandardFeatureExtractor>();
extractor->set_extraction_method(ExtractionMethod::HIGH_ENERGY_DATA);
extractor->set_parameter("energy_threshold", 0.2);
 
auto high_energy_audio = extractor->extract_data(audio_data);
 
// Extract data from statistical outlier regions
extractor->set_extraction_method(ExtractionMethod::OUTLIER_DATA);
extractor->set_parameter("std_dev_threshold", 2.5);
 
auto outlier_audio = extractor->extract_data(audio_data);

Definition in file FeatureExtractor.hpp.