GTSAM  4.0.2
C++ library for smoothing and mapping (SAM)
Public Types | Protected Attributes | List of all members
gtsam::Cal3 Class Reference

Common base class for all calibration models. More...

#include <Cal3.h>

Inheritance diagram for gtsam::Cal3:
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Public Types

enum  { dimension = 5 }
 
using shared_ptr = std::shared_ptr< Cal3 >
 

Protected Attributes

double fx_ = 1.0f
 
double fy_ = 1.0f
 focal length
 
double s_ = 0.0f
 skew
 
double u0_ = 0.0f
 
double v0_ = 0.0f
 principal point
 

Standard Constructors

 Cal3 ()=default
 Create a default calibration that leaves coordinates unchanged.
 
 Cal3 (double fx, double fy, double s, double u0, double v0)
 constructor from doubles
 
 Cal3 (const Vector5 &d)
 constructor from vector
 
 Cal3 (double fov, int w, int h)
 
virtual ~Cal3 ()
 Virtual destructor.
 

Advanced Constructors

 Cal3 (const std::string &path)
 

Testable

virtual void print (const std::string &s="") const
 print with optional string
 
bool equals (const Cal3 &K, double tol=10e-9) const
 Check if equal up to specified tolerance.
 
GTSAM_EXPORT friend std::ostream & operator<< (std::ostream &os, const Cal3 &cal)
 Output stream operator.
 

Standard Interface

double fx () const
 focal length x
 
double fy () const
 focal length y
 
double aspectRatio () const
 aspect ratio
 
double skew () const
 skew
 
double px () const
 image center in x
 
double py () const
 image center in y
 
Point2 principalPoint () const
 return the principal point
 
Vector5 vector () const
 vectorized form (column-wise)
 
virtual Matrix3 K () const
 return calibration matrix K
 
Matrix3 inverse () const
 Return inverted calibration matrix inv(K)
 
virtual size_t dim () const
 return DOF, dimensionality of tangent space
 
static size_t Dim ()
 return DOF, dimensionality of tangent space
 

Detailed Description

Common base class for all calibration models.

Constructor & Destructor Documentation

◆ Cal3() [1/2]

gtsam::Cal3::Cal3 ( double  fov,
int  w,
int  h 
)

Easy constructor, takes fov in degrees, asssumes zero skew, unit aspect

Parameters
fovfield of view in degrees
wimage width
himage height

◆ Cal3() [2/2]

gtsam::Cal3::Cal3 ( const std::string &  path)

Load calibration parameters from calibration_info.txt file located in path directory.

The contents of calibration file should be the 5 parameters in order: fx, fy, s, u0, v0

Parameters
pathpath to directory containing calibration_info.txt.

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