Program Listing for File narf.h¶
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#ifndef PCL_NARF_H_
#define PCL_NARF_H_
#include <pcl/features/eigen.h>
#include <pcl/common/common_headers.h>
#include <pcl/point_representation.h>
namespace pcl
{
// Forward declarations
class RangeImage;
struct InterestPoint;
#define NARF_DEFAULT_SURFACE_PATCH_PIXEL_SIZE 10
/**
* \brief NARF (Normal Aligned Radial Features) is a point feature descriptor type for 3D data.
* Please refer to pcl/features/narf_descriptor.h if you want the class derived from pcl Feature.
* See B. Steder, R. B. Rusu, K. Konolige, and W. Burgard
* Point Feature Extraction on 3D Range Scans Taking into Account Object Boundaries
* In Proc. of the IEEE Int. Conf. on Robotics &Automation (ICRA). 2011.
* \author Bastian Steder
* \ingroup features
*/
class PCL_EXPORTS Narf
{
public:
// =====CONSTRUCTOR & DESTRUCTOR=====
//! Constructor
Narf();
//! Copy Constructor
Narf(const Narf& other);
//! Destructor
~Narf();
// =====Operators=====
//! Assignment operator
const Narf& operator=(const Narf& other);
// =====STATIC=====
/** The maximum number of openmp threads that can be used in this class */
static int max_no_of_threads;
/** Add features extracted at the given interest point and add them to the list */
static void
extractFromRangeImageAndAddToList (const RangeImage& range_image, const Eigen::Vector3f& interest_point, int descriptor_size,
float support_size, bool rotation_invariant, std::vector<Narf*>& feature_list);
/** Same as above */
static void
extractFromRangeImageAndAddToList (const RangeImage& range_image, float image_x, float image_y, int descriptor_size,
float support_size, bool rotation_invariant, std::vector<Narf*>& feature_list);
/** Get a list of features from the given interest points. */
static void
extractForInterestPoints (const RangeImage& range_image, const PointCloud<InterestPoint>& interest_points,
int descriptor_size, float support_size, bool rotation_invariant, std::vector<Narf*>& feature_list);
/** Extract an NARF for every point in the range image. */
static void
extractForEveryRangeImagePointAndAddToList (const RangeImage& range_image, int descriptor_size, float support_size,
bool rotation_invariant, std::vector<Narf*>& feature_list);
// =====PUBLIC METHODS=====
/** Method to extract a NARF feature from a certain 3D point using a range image.
* pose determines the coordinate system of the feature, whereas it transforms a point from the world into the feature system.
* This means the interest point at which the feature is extracted will be the inverse application of pose onto (0,0,0).
* descriptor_size_ determines the size of the descriptor,
* support_size determines the support size of the feature, meaning the size in the world it covers */
bool
extractFromRangeImage (const RangeImage& range_image, const Eigen::Affine3f& pose, int descriptor_size, float support_size,
int surface_patch_world_size=NARF_DEFAULT_SURFACE_PATCH_PIXEL_SIZE);
//! Same as above, but determines the transformation from the surface in the range image
bool
extractFromRangeImage (const RangeImage& range_image, float x, float y, int descriptor_size, float support_size);
//! Same as above
bool
extractFromRangeImage (const RangeImage& range_image, const InterestPoint& interest_point, int descriptor_size, float support_size);
//! Same as above
bool
extractFromRangeImage (const RangeImage& range_image, const Eigen::Vector3f& interest_point, int descriptor_size, float support_size);
/** Same as above, but using the rotational invariant version by choosing the best extracted rotation around the normal.
* Use extractFromRangeImageAndAddToList if you want to enable the system to return multiple features with different rotations. */
bool
extractFromRangeImageWithBestRotation (const RangeImage& range_image, const Eigen::Vector3f& interest_point,
int descriptor_size, float support_size);
/* Get the dominant rotations of the current descriptor
* \param rotations the returned rotations
* \param strength values describing how pronounced the corresponding rotations are
*/
void
getRotations (std::vector<float>& rotations, std::vector<float>& strengths) const;
/* Get the feature with a different rotation around the normal
* You are responsible for deleting the new features!
* \param range_image the source from which the feature is extracted
* \param rotations list of angles (in radians)
* \param rvps returned features
*/
void
getRotatedVersions (const RangeImage& range_image, const std::vector<float>& rotations, std::vector<Narf*>& features) const;
//! Calculate descriptor distance, value in [0,1] with 0 meaning identical and 1 every cell above maximum distance
inline float
getDescriptorDistance (const Narf& other) const;
//! How many points on each beam of the gradient star are used to calculate the descriptor?
inline int
getNoOfBeamPoints () const { return (static_cast<int> (pcl_lrint (ceil (0.5f * float (surface_patch_pixel_size_))))); }
//! Copy the descriptor and pose to the point struct Narf36
inline void
copyToNarf36 (Narf36& narf36) const;
/** Write to file */
void
saveBinary (const std::string& filename) const;
/** Write to output stream */
void
saveBinary (std::ostream& file) const;
/** Read from file */
void
loadBinary (const std::string& filename);
/** Read from input stream */
void
loadBinary (std::istream& file);
//! Create the descriptor from the already set other members
bool
extractDescriptor (int descriptor_size);
// =====GETTERS=====
//! Getter (const) for the descriptor
inline const float*
getDescriptor () const { return descriptor_;}
//! Getter for the descriptor
inline float*
getDescriptor () { return descriptor_;}
//! Getter (const) for the descriptor length
inline const int&
getDescriptorSize () const { return descriptor_size_;}
//! Getter for the descriptor length
inline int&
getDescriptorSize () { return descriptor_size_;}
//! Getter (const) for the position
inline const Eigen::Vector3f&
getPosition () const { return position_;}
//! Getter for the position
inline Eigen::Vector3f&
getPosition () { return position_;}
//! Getter (const) for the 6DoF pose
inline const Eigen::Affine3f&
getTransformation () const { return transformation_;}
//! Getter for the 6DoF pose
inline Eigen::Affine3f&
getTransformation () { return transformation_;}
//! Getter (const) for the pixel size of the surface patch (only one dimension)
inline const int&
getSurfacePatchPixelSize () const { return surface_patch_pixel_size_;}
//! Getter for the pixel size of the surface patch (only one dimension)
inline int&
getSurfacePatchPixelSize () { return surface_patch_pixel_size_;}
//! Getter (const) for the world size of the surface patch
inline const float&
getSurfacePatchWorldSize () const { return surface_patch_world_size_;}
//! Getter for the world size of the surface patch
inline float&
getSurfacePatchWorldSize () { return surface_patch_world_size_;}
//! Getter (const) for the rotation of the surface patch
inline const float&
getSurfacePatchRotation () const { return surface_patch_rotation_;}
//! Getter for the rotation of the surface patch
inline float&
getSurfacePatchRotation () { return surface_patch_rotation_;}
//! Getter (const) for the surface patch
inline const float*
getSurfacePatch () const { return surface_patch_;}
//! Getter for the surface patch
inline float*
getSurfacePatch () { return surface_patch_;}
//! Method to erase the surface patch and free the memory
inline void
freeSurfacePatch () { delete[] surface_patch_; surface_patch_=NULL; surface_patch_pixel_size_=0; }
// =====SETTERS=====
//! Setter for the descriptor
inline void
setDescriptor (float* descriptor) { descriptor_ = descriptor;}
//! Setter for the surface patch
inline void
setSurfacePatch (float* surface_patch) { surface_patch_ = surface_patch;}
// =====PUBLIC MEMBER VARIABLES=====
// =====PUBLIC STRUCTS=====
struct FeaturePointRepresentation : public PointRepresentation<Narf*>
{
typedef Narf* PointT;
FeaturePointRepresentation(int nr_dimensions) { this->nr_dimensions_ = nr_dimensions; }
/** \brief Empty destructor */
virtual ~FeaturePointRepresentation () {}
virtual void copyToFloatArray (const PointT& p, float* out) const { memcpy(out, p->getDescriptor(), sizeof(*p->getDescriptor())*this->nr_dimensions_); }
};
protected:
// =====PROTECTED METHODS=====
//! Reset al members to default values and free allocated memory
void
reset ();
//! Create a deep copy of other
void
deepCopy (const Narf& other);
//! Get the surface patch with a blur on it
float*
getBlurredSurfacePatch (int new_pixel_size, int blur_radius) const;
/** Write header to output stream */
void
saveHeader (std::ostream& file) const;
/** Read header from input stream */
int
loadHeader (std::istream& file) const;
// =====PROTECTED STATIC METHODS=====
static const std::string
getHeaderKeyword () { return "NARF"; }
// =====PROTECTED STATIC VARIABLES=====
const static int VERSION = 1;
// =====PROTECTED MEMBER VARIABLES=====
Eigen::Vector3f position_;
Eigen::Affine3f transformation_;
float* surface_patch_;
int surface_patch_pixel_size_;
float surface_patch_world_size_;
float surface_patch_rotation_;
float* descriptor_;
int descriptor_size_;
// =====STATIC PROTECTED=====
public:
EIGEN_MAKE_ALIGNED_OPERATOR_NEW
};
#undef NARF_DEFAULT_SURFACE_PATCH_PIXEL_SIZE
} // end namespace pcl
#include <pcl/features/impl/narf.hpp>
#endif //#ifndef PCL_NARF_H_