Fawkes API
Fawkes Development Version
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SIFT classifier. More...
#include <>>
Public Member Functions | |
SiftClassifier (const char *features_file, unsigned int pixel_width, unsigned int pixel_height, int kdtree_bbf_max_nn_chks=200, float nn_sq_dist_ratio_thr=0.49, int flags=0) | |
Constructor. More... | |
virtual | ~SiftClassifier () |
Destructor. More... | |
virtual std::list< ROI > * | classify () |
Classify image. More... | |
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Classifier (const char *name) | |
Constructor. More... | |
virtual | ~Classifier () |
Destructor. More... | |
virtual void | set_src_buffer (unsigned char *yuv422_planar, unsigned int width, unsigned int height) |
Set source buffer. More... | |
virtual const char * | name () const |
Get name of classifier. More... | |
Additional Inherited Members | |
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unsigned char * | _src |
Source buffer, encoded as YUV422_PLANAR. More... | |
unsigned int | _width |
Width in pixels of _src buffer. More... | |
unsigned int | _height |
Height in pixels of _src buffer. More... | |
SIFT classifier.
This class provides a classifier that uses OpenCV to detect objects in a given image by matching features using SIFT. The objects are reported back as regions of interest. Each ROI contains an object.
This code is based on the sift package provided by Rob Hess. at http://web.engr.oregonstate.edu/~hess/
firevision::SiftClassifier::SiftClassifier | ( | const char * | object_file, |
unsigned int | pixel_width, | ||
unsigned int | pixel_height, | ||
int | kdtree_bbf_max_nn_chks = 200 , |
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float | nn_sq_dist_ratio_thr = 0.49 , |
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int | flags = 0 |
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Constructor.
object_file | file that contains the object to detect |
pixel_width | width of images that will be processed |
pixel_height | height of images that will be processed |
kdtree_bbf_max_nn_chks | maximum number of keypoint NN candidates to check during BBF search |
nn_sq_dist_ratio_thr | threshold on squared ratio of distances between NN and 2nd NN |
flags | flags, not used yet. |
Definition at line 78 of file sift.cpp.
References fawkes::TimeTracker::add_class(), fawkes::TimeTracker::ping_end(), and fawkes::TimeTracker::ping_start().
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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.
Implements firevision::Classifier.
Definition at line 140 of file sift.cpp.
References firevision::Classifier::_height, firevision::Classifier::_src, firevision::Classifier::_width, fawkes::TimeTracker::ping_end(), fawkes::TimeTracker::ping_start(), and fawkes::TimeTracker::print_to_stdout().