SiftppClassifier Class Reference

SIFTPP classifier. More...

#include <classifiers/siftpp.h>

Inheritance diagram for SiftppClassifier:

Inheritance graph
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List of all members.


Classes

struct  Feature
 Siftpp Feature struct. More...

Public Member Functions

 SiftppClassifier (const char *features_file, int samplingStep=2, int octaves=4, int levels=3, float magnif=3.0, int noorient=0, int unnormalized=0)
 Constructor.
virtual ~SiftppClassifier ()
 Destructor.
virtual std::list< ROI > * classify ()
 Classify image.

Detailed Description

SIFTPP classifier.

This class provides a classifier that uses SIFTPP to detect objects in a given image by matching features. The objects are reported back as regions of interest. Each ROI contains an object. ROIs with 11x11 are matched features.

This code uses siftpp from http://vision.ucla.edu/~vedaldi/code/siftpp/siftpp.html and is partly based on code from their package.

Author:
Stefan Schiffer

Definition at line 45 of file siftpp.h.

Constructor & Destructor Documentation

SiftppClassifier::SiftppClassifier ( const char *  object_file,
int  samplingStep = 2,
int  octaves = 4,
int  levels = 3,
float  magnif = 3.0,
int  noorient = 0,
int  unnormalized = 0 
)

Constructor.

Parameters:
object_file file that contains an image of the object to detect
samplingStep Initial sampling step
octaves Number of analysed octaves
levels Number of levels per octave
magnif Keypoint magnification (default = 3)
noorient rotation invariance (0) or upright (1)
unnormalized Normalization of features (default 0)

Definition at line 67 of file siftpp.cpp.

References fawkes::TimeTracker::add_class(), PNGReader::colorspace(), SiftppClassifier::Feature::descs, SiftppClassifier::Feature::key, SiftppClassifier::Feature::number_of_desc, fawkes::TimeTracker::ping_end(), fawkes::TimeTracker::ping_start(), PNGReader::pixel_height(), PNGReader::pixel_width(), PNGReader::read(), and PNGReader::set_buffer().

SiftppClassifier::~SiftppClassifier (  )  [virtual]

Destructor.

Definition at line 218 of file siftpp.cpp.

Member Function Documentation

std::list< ROI > * SiftppClassifier::classify (  )  [virtual]

Classify image.

The current buffer is processed and scanned for the features the classifier has been written and initialized for. It returns a list of disjunct regions of interest.

Returns:
disjunct list of extracted regions of interest

Write image to verify correct operation

adding feature-ROI

Implements Classifier.

Definition at line 230 of file siftpp.cpp.

References Classifier::_height, Classifier::_src, Classifier::_width, SiftppClassifier::Feature::descs, SiftppClassifier::Feature::key, SiftppClassifier::Feature::number_of_desc, fawkes::TimeTracker::ping_end(), fawkes::TimeTracker::ping_start(), and fawkes::TimeTracker::print_to_stdout().

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