SIFTPP classifier. More...
#include <classifiers/siftpp.h>
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. |
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.
Definition at line 50 of file siftpp.h.
firevision::SiftppClassifier::SiftppClassifier | ( | const char * | object_file, | |
int | samplingStep = 2 , |
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int | octaves = 4 , |
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int | levels = 3 , |
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float | magnif = 3.0 , |
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int | noorient = 0 , |
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int | unnormalized = 0 | |||
) |
Constructor.
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 72 of file siftpp.cpp.
References fawkes::TimeTracker::add_class(), firevision::PNGReader::colorspace(), firevision::SiftppClassifier::Feature::descs, firevision::SiftppClassifier::Feature::key, firevision::SiftppClassifier::Feature::number_of_desc, fawkes::TimeTracker::ping_end(), fawkes::TimeTracker::ping_start(), firevision::PNGReader::pixel_height(), firevision::PNGReader::pixel_width(), firevision::PNGReader::read(), and firevision::PNGReader::set_buffer().
firevision::SiftppClassifier::~SiftppClassifier | ( | ) | [virtual] |
Destructor.
Definition at line 223 of file siftpp.cpp.
std::list< ROI > * firevision::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.
Write image to verify correct operation
adding feature-ROI
Implements firevision::Classifier.
Definition at line 235 of file siftpp.cpp.
References firevision::Classifier::_height, firevision::Classifier::_src, firevision::Classifier::_width, firevision::SiftppClassifier::Feature::descs, firevision::SiftppClassifier::Feature::key, firevision::SiftppClassifier::Feature::number_of_desc, fawkes::TimeTracker::ping_end(), fawkes::TimeTracker::ping_start(), and fawkes::TimeTracker::print_to_stdout().