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alvar Namespace Reference

Main ALVAR namespace. More...

Namespaces

 plugins
 Dynamically loaded plugins namespace.
 

Classes

class  AlvarException
 ALVAR exception class. More...
 
class  Bitset
 Bitset is a basic class for handling bit sequences More...
 
class  BitsetExt
 An extended Bitset ( BitsetExt ) for handling e.g. Hamming encoding/decoding. More...
 
struct  ProjPoints
 Simple structure for collecting 2D and 3D points e.g. for camera calibration. More...
 
class  Camera
 Simple Camera class for calculating distortions, orientation or projections with pre-calibrated camera. More...
 
struct  Homography
 Simple Homography class for finding and projecting points between two planes. More...
 
class  Labeling
 Base class for labeling connected components from binary image. More...
 
class  LabelingCvSeq
 Labeling class that uses OpenCV routines to find connected components. More...
 
class  Container3d
 Generic container to store any information in 3D (features, photos, ...) More...
 
class  Container3dSortDist
 Functor class for Container3d Sort() to sort the search base using distance to specified origin. More...
 
class  Container3dSortSize
 Functor class for Container3d Sort() to sort the search base using content size. More...
 
class  Container3dLimitDist
 Functor class for Container3d Limit() to limit the search space with distance. More...
 
class  ExternalContainer
 Basic structure to be usable with EC methods. More...
 
class  DoHandleTest
 This is a default functor for testing which items in the container should be handled by each method. More...
 
class  DoEraseTest
 This is default functor for testing which items in the container should be erased. More...
 
class  TrackerFeaturesEC
 Version of TrackerFeatures using external container. More...
 
class  CameraEC
 Version of Camera using external container. More...
 
class  MarkerDetectorEC
 Version of MarkerDetector using external container. More...
 
class  MultiMarkerEC
 Version of MultiMarker using external container. More...
 
class  FileFormatUtils
 Utility functions for file reading / writing. More...
 
class  Filter
 Filter is pure virtual class describing the basic virtual interface for all filters More...
 
class  FilterAverage
 FilterAverage provides an average filter More...
 
class  FilterMedian
 FilterMedian provides an median filter More...
 
class  FilterRunningAverage
 FilterRunningAverage provides an weighted running average filter More...
 
class  FilterDoubleExponentialSmoothing
 FilterDoubleExponentialSmoothing provides an weighted running average filter More...
 
class  FilterArray
 Class for handling an array of filtered values. More...
 
class  IntIndex
 Class for calculating "evenly spaced" integer indices for data sequence. More...
 
class  IntegralImage
 IntegralImage is used for calculating rectangular image sums and averages rapidly More...
 
class  IntegralGradient
 IntegralGradient is used for calculating rectangular image gradients rapidly More...
 
class  KalmanSensorCore
 Core implementation for Kalman sensor. More...
 
class  KalmanCore
 Core implementation for Kalman. More...
 
class  KalmanSensor
 Kalman sensor implementation. More...
 
class  Kalman
 Kalman implementation. More...
 
class  KalmanSensorEkf
 Extended Kalman Filter (EKF) sensor implementation. More...
 
class  KalmanEkf
 Extended Kalman Filter (EKF) implementation. More...
 
class  KalmanVisualize
 Class for visualizing Kalman filter. More...
 
struct  Line
 Struct representing a line. The line is parametrized by its center and direction vector. More...
 
class  Marker
 Basic 2D Marker functionality. More...
 
class  MarkerArtoolkit
 MarkerArtoolkit for using matrix markers similar with the ones used in ARToolkit. More...
 
class  MarkerData
 MarkerData contains matrix of Hamming encoded data. More...
 
class  MarkerIterator
 Iterator type for traversing templated Marker vector without the template. More...
 
class  MarkerIteratorImpl
 Iterator implementation for traversing templated Marker vector without the template. More...
 
class  MarkerDetectorImpl
 Templateless version of MarkerDetector. Please use MarkerDetector instead. More...
 
class  MarkerDetector
 MarkerDetector for detecting markers of type M More...
 
class  MultiMarker
 Base class for using MultiMarker. More...
 
class  MultiMarkerBundle
 Multi marker that uses bundle adjustment to refine the 3D positions of the markers (point cloud). More...
 
class  MultiMarkerFiltered
 Multi marker that is constructed by first calculating the marker poses directly relative to base marker and then filtering the results using e.g. median filter. More...
 
class  MultiMarkerInitializer
 Initializes multi marker by estimating their relative positions from one or more images. More...
 
class  Optimization
 Non-linear optimization routines. There are three methods implemented that include Gauss-Newton, Levenberg-Marquardt and Tukey m-estimator. More...
 
class  Capture
 Capture interface that plugins must implement. More...
 
class  CaptureDevice
 CaptureDevice holder for camera information. More...
 
class  CaptureFactory
 CaptureFactory for creating Capture classes. More...
 
class  CapturePlugin
 CapturePlugin interface that plugins must implement. More...
 
class  DirectoryIterator
 DirectoryIterator for iterating over files and directories. More...
 
class  Lock
 Lock for simplifying mutex handling. More...
 
class  Mutex
 Mutex for synchronizing multiple threads. More...
 
class  Plugin
 Plugin for loading dynamic libraries. More...
 
class  Threads
 Threads vector for handling multiple threads. More...
 
class  Timer
 Timer for measuring execution time. More...
 
class  Uncopyable
 Uncopyable for preventing object copies. More...
 
class  Pose
 Pose representation derived from the Rotation class More...
 
class  RansacImpl
 Internal implementation of RANSAC. Please use Ransac or IndexRansac. More...
 
class  Ransac
 Implementation of a general RANdom SAmple Consensus algorithm. More...
 
class  IndexRansac
 Implementation of a general RANdom SAmple Consensus algorithm with implicit parameters. More...
 
class  Rotation
 Rotation structure and transformations between different parameterizations. More...
 
class  SimpleSfM
 Simple structure from motion implementation using CameraEC , MarkerDetectorEC and TrackerFeaturesEC. More...
 
class  Tracker
 Pure virtual base class for tracking optical flow. More...
 
class  TrackerFeatures
 TrackerFeatures tracks features using OpenCV's cvGoodFeaturesToTrack and cvCalcOpticalFlowPyrLK More...
 
class  TrackerOrientation
 Track orientation based only on features in the image plane. More...
 
class  TrackerPsa
 TrackerPsa implements a very simple PSA tracker More...
 
class  TrackerPsaRot
 TrackerPsaRot implements a slightly extended version of a TrackerPsa which can also detect sideways rotation More...
 
class  TrackerStat
 TrackerStat deduces the optical flow based on tracked features using Seppo Valli's statistical tracking. More...
 
class  TrackerStatRot
 TrackerStatRot implements a slightly extended version of TrackerStat which can also detect sideways rotation. More...
 
class  TrifocalTensor
 Trifocal tensor works for three images like a fundamental matrix works for two images. More...
 
class  UnscentedKalman
 Implementation of unscented kalman filter (UKF) for filtering non-linear processes. More...
 
class  UnscentedProcess
 Process model for an unscented kalman filter. More...
 
class  UnscentedObservation
 Observation model for an unscented kalman filter. More...
 
struct  Point
 Simple Point class meant to be inherited from OpenCV point-classes. For example: Point<cv::Point2d> p. More...
 
struct  Index
 Class for N-dimensional index to be used e.g. with STL maps. More...
 
class  Histogram
 Class for N-dimensional Histograms. More...
 
class  HistogramSubpixel
 N-dimensional Histograms calculating also the subpixel average for max bin. More...
 
class  Serialization
 Class for serializing class content to/from file or std::iostream. More...
 

Typedefs

typedef ALVAR_EXPORT Point< cv::Point > PointInt
 The default integer point type.
 
typedef ALVAR_EXPORT Point< cv::Point2d > PointDouble
 The default double point type.
 

Enumerations

enum  FILE_FORMAT { FILE_FORMAT_DEFAULT , FILE_FORMAT_OPENCV , FILE_FORMAT_TEXT , FILE_FORMAT_XML }
 

Functions

template<class PointType >
void DrawBB (cv::Mat &image, const std::vector< PointType > &points, const cv::Scalar &color, const std::string &label="")
 Draws the bounding box of a connected component (Blob). More...
 
template<class PointType >
void DrawLines (cv::Mat &image, const std::vector< PointType > &points, const cv::Scalar &color, bool loop=true)
 Draws lines between consecutive points stored in vector (polyline). More...
 
void ALVAR_EXPORT DrawLine (cv::Mat &image, const Line line, const cv::Scalar &color=CV_RGB(0, 255, 0))
 Draws a line. More...
 
void ALVAR_EXPORT DrawPoints (cv::Mat &image, const std::vector< cv::Point > &contour, const cv::Scalar &color=CV_RGB(255, 0, 0))
 Draws points of the contour that is obtained by Labeling class. More...
 
void ALVAR_EXPORT DrawCircles (cv::Mat &image, const std::vector< cv::Point > &contour, int radius, const cv::Scalar &color=CV_RGB(255, 0, 0))
 Draws circles to the contour points that are obtained by Labeling class. More...
 
void ALVAR_EXPORT DrawLines (cv::Mat &image, const std::vector< cv::Point > &contour, const cv::Scalar &color=CV_RGB(255, 0, 0))
 Draws lines between consecutive contour points. More...
 
template<class PointType >
void DrawPoints (cv::Mat &image, const std::vector< PointType > &points, const cv::Scalar &color, int radius=1)
 Draws circles to the array of points. More...
 
void ALVAR_EXPORT DrawCVEllipse (cv::Mat &image, const cv::RotatedRect &ellipse, const cv::Scalar &color, bool fill=false, double par=0)
 Draws OpenCV ellipse. More...
 
void ALVAR_EXPORT BuildHideTexture (cv::Mat &image, cv::Mat &hide_texture, Camera *cam, double gl_modelview[16], PointDouble topleft, PointDouble botright)
 This function is used to construct a texture image which is needed to hide a marker from the original video frame. See SampleMarkerHide.cpp for example implementation. More...
 
void ALVAR_EXPORT DrawTexture (cv::Mat &image, cv::Mat &texture, Camera *cam, double gl_modelview[16], PointDouble topleft, PointDouble botright)
 Draws the texture generated by BuildHideTexture to given video frame. For better performance, use OpenGL instead. See SampleMarkerHide.cpp for example implementation. More...
 
template<typename T , typename F >
int EraseItemsEC (std::map< int, T > &container, F do_erase_test)
 Erasing items from container using DoEraseTest type functor.
 
int MarkerIdToContainerId (int marker_id, int corner_id, int first_id=0, int last_id=65535)
 Calculate the index used in external container map for specified marker_id.
 
int ALVAR_EXPORT FitLines (std::vector< Line > &lines, const std::vector< int > &corners, const std::vector< PointInt > &edge)
 Fit lines to vector of points. More...
 
PointDouble ALVAR_EXPORT Intersection (const Line &l1, const Line &l2)
 Calculates an intersection point of two lines. More...
 
void ALVAR_EXPORT errorAtLine (int status, int error, const char *filename, unsigned int line, const char *format,...)
 Error reporting function inspired by error_at_line() on Linux. More...
 
void ALVAR_EXPORT sleep (unsigned long milliseconds)
 Sleep for a specified amount of milliseconds.
 
template<class C >
int ALVAR_EXPORT Sign (const C &v)
 Returns the sign of a number.
 
template<class C >
double ALVAR_EXPORT Rad2Deg (const C &v)
 Converts an angle from radians to degrees.
 
template<class C >
double ALVAR_EXPORT Deg2Rad (const C &v)
 Converts an angle from degrees to radians.
 
template<class PointType >
double PointSquaredDistance (PointType p1, PointType p2)
 Returns the squared distance of two points. More...
 
int ALVAR_EXPORT dot (const cv::Point &A, const cv::Point &B, const cv::Point &C)
 Computes dot product AB.BC. More...
 
int ALVAR_EXPORT cross (const cv::Point &A, const cv::Point &B, const cv::Point &C)
 Computes the cross product AB x AC. More...
 
double ALVAR_EXPORT distance (const cv::Point &A, const cv::Point &B)
 Compute the distance from A to B. More...
 
double ALVAR_EXPORT linePointDist (const cv::Point &A, const cv::Point &B, const cv::Point &C, bool isSegment)
 Computes the distance from point C to line (segment) AB. More...
 
double ALVAR_EXPORT angle (const cv::Point &A, const cv::Point &B, const cv::Point &C, const cv::Point &D, int isDirectionDependent)
 Computes the angle between lines AB and CD. More...
 
double ALVAR_EXPORT polyLinePointDist (const std::vector< cv::Point > &points, const cv::Point &C, int *index, int isClosedPolygon)
 Calculates minimum distance from Point C to Polygon whose points are in list PointList. More...
 
void ALVAR_EXPORT FitCVEllipse (const std::vector< PointDouble > &points, cv::RotatedRect &ellipse_box)
 Uses OpenCV routine to fit ellipse to a vector of points. More...
 
int ALVAR_EXPORT exp_filt2 (std::vector< double > &v, std::vector< double > &ret, bool clamp)
 
template<class C >
int ALVAR_EXPORT diff (const std::vector< C > &v, std::vector< C > &ret)
 Calculates the difference between the consecutive vector elements. More...
 
int ALVAR_EXPORT find_zero_crossings (const std::vector< double > &v, std::vector< int > &corners, int offs=20)
 Finds zero crossings of given vector elements (sequence). More...
 
void ALVAR_EXPORT out_matrix (const cv::Mat &m, const char *name)
 Output OpenCV matrix for debug purposes.
 
double ALVAR_EXPORT Limit (double val, double min_val, double max_val)
 Limits a number to between two values. More...
 
void STRCPY (char *to, size_t size, const char *src)
 

Variables

static const int ALVAR_VERSION_MAJOR = 2
 Major version number.
 
static const int ALVAR_VERSION_MINOR = 2
 Minor version number.
 
static const int ALVAR_VERSION_PATCH = 1
 Patch version number.
 
static const char * ALVAR_VERSION_TAG = ""
 Tag version string. More...
 
static const char * ALVAR_VERSION_REVISION = ""
 Revision version string. More...
 
static const char * ALVAR_VERSION = "2.2.1"
 Entire version string.
 
static const char * ALVAR_VERSION_NODOTS = "221"
 Entire version string without dots.
 
static const char * ALVAR_DATE = "2021-06-21"
 Date the library was built.
 
static const char * ALVAR_SYSTEM = "Linux 5.11.18-300.fc34.x86_64 x86_64"
 System the library was built on.
 
const double PI = 3.14159265
 

Detailed Description

Main ALVAR namespace.

Enumeration Type Documentation

◆ FILE_FORMAT

File format enumeration used when reading / writing configuration files.

Enumerator
FILE_FORMAT_DEFAULT 

Default file format.

Format is either OPENCV, TEXT or XML depending on load/store function used.

FILE_FORMAT_OPENCV 

File format written with cvWrite.

File contents depend on the specific load/store function used.

FILE_FORMAT_TEXT 

Plain ASCII text file format.

File contents depend on the specific load/store function used.

FILE_FORMAT_XML 

XML file format.

XML schema depends on the specific load/store function used.

Definition at line 39 of file FileFormat.h.

Function Documentation

◆ angle()

double ALVAR_EXPORT alvar::angle ( const cv::Point &  A,
const cv::Point &  B,
const cv::Point &  C,
const cv::Point &  D,
int  isDirectionDependent 
)

Computes the angle between lines AB and CD.

Parameters
isDirectionDependentIf isDirectionDependent = 1, angle depends on the order of the points. Otherwise returns smaller angle.
Astart point of first line
Bend point of first line
Cstart point of second line
Dend point of second line

◆ BuildHideTexture()

void ALVAR_EXPORT alvar::BuildHideTexture ( cv::Mat &  image,
cv::Mat &  hide_texture,
Camera cam,
double  gl_modelview[16],
PointDouble  topleft,
PointDouble  botright 
)

This function is used to construct a texture image which is needed to hide a marker from the original video frame. See SampleMarkerHide.cpp for example implementation.

Parameters
imagePointer to the original video frame from where the hiding texture is calculated.
hide_texturePointer to the destination image where the resulting texture is stored.
camCamera object that is used for marker tracking.
gl_modelviewCurrent model view matrix.
topleftTop left limit of the texture area in marker coordinate frame.
botrightBottom right limit of the texture area in marker coordinate frame.

◆ cross()

int ALVAR_EXPORT alvar::cross ( const cv::Point &  A,
const cv::Point &  B,
const cv::Point &  C 
)

Computes the cross product AB x AC.

Parameters
A,Band C points defining lines (line segments) AB and AC

◆ diff()

int ALVAR_EXPORT alvar::diff ( const std::vector< C > &  v,
std::vector< C > &  ret 
)
inline

Calculates the difference between the consecutive vector elements.

Parameters
vSource elements.
retThe difference vector. This is cleared and then resized.
Returns
The number of elements.

Definition at line 200 of file Util.h.

◆ distance()

double ALVAR_EXPORT alvar::distance ( const cv::Point &  A,
const cv::Point &  B 
)

Compute the distance from A to B.

Parameters
Aand B points

◆ dot()

int ALVAR_EXPORT alvar::dot ( const cv::Point &  A,
const cv::Point &  B,
const cv::Point &  C 
)

Computes dot product AB.BC.

Parameters
A,Band C points defining lines (line segments) AB and BC

◆ DrawBB()

void alvar::DrawBB ( cv::Mat &  image,
const std::vector< PointType > &  points,
const cv::Scalar &  color,
const std::string &  label = "" 
)
inline

Draws the bounding box of a connected component (Blob).

Parameters
imagePointer to the destination image.
pointsVector of points that determine the bounding box.
colorUse CV_RGB(red,green,blue) to determine the color of the bounding box.
labelA label to show in the center of the bounding box.

Definition at line 51 of file Draw.h.

◆ DrawCircles()

void ALVAR_EXPORT alvar::DrawCircles ( cv::Mat &  image,
const std::vector< cv::Point > &  contour,
int  radius,
const cv::Scalar &  color = CV_RGB(255, 0, 0) 
)

Draws circles to the contour points that are obtained by Labeling class.

Parameters
imagePointer to the destination image.
contourControur sequence.
radiusCircle radius in pixels.
colorUse CV_RGB(red,green,blue) to determine the color.

◆ DrawCVEllipse()

void ALVAR_EXPORT alvar::DrawCVEllipse ( cv::Mat &  image,
const cv::RotatedRect &  ellipse,
const cv::Scalar &  color,
bool  fill = false,
double  par = 0 
)

Draws OpenCV ellipse.

Parameters
imagePointer to the destination image.
ellipseEllipse struct in OpenCV format.
colorUse CV_RGB(red,green,blue) to determine the color.
fillIf false, only the outline is drawn.
parThe ellipse width and height are grown by par pixels.

◆ DrawLine()

void ALVAR_EXPORT alvar::DrawLine ( cv::Mat &  image,
const Line  line,
const cv::Scalar &  color = CV_RGB(0, 255, 0) 
)

Draws a line.

Parameters
imagePointer to the destination image.
lineLine struct to be drawn.
colorUse CV_RGB(red,green,blue) to determine the color.

◆ DrawLines() [1/2]

void ALVAR_EXPORT alvar::DrawLines ( cv::Mat &  image,
const std::vector< cv::Point > &  contour,
const cv::Scalar &  color = CV_RGB(255, 0, 0) 
)

Draws lines between consecutive contour points.

Parameters
imagePointer to the destination image.
contourControur sequence.
colorUse CV_RGB(red,green,blue) to determine the color.

◆ DrawLines() [2/2]

void alvar::DrawLines ( cv::Mat &  image,
const std::vector< PointType > &  points,
const cv::Scalar &  color,
bool  loop = true 
)
inline

Draws lines between consecutive points stored in vector (polyline).

Parameters
imagePointer to the destination image.
pointsVector of points that determine the polyline.
colorUse CV_RGB(red,green,blue) to determine the color.
loopIf true, the polyline is closed.

Definition at line 101 of file Draw.h.

◆ DrawPoints() [1/2]

void ALVAR_EXPORT alvar::DrawPoints ( cv::Mat &  image,
const std::vector< cv::Point > &  contour,
const cv::Scalar &  color = CV_RGB(255, 0, 0) 
)

Draws points of the contour that is obtained by Labeling class.

Parameters
imagePointer to the destination image.
contourControur sequence.
colorUse CV_RGB(red,green,blue) to determine the color.

◆ DrawPoints() [2/2]

void alvar::DrawPoints ( cv::Mat &  image,
const std::vector< PointType > &  points,
const cv::Scalar &  color,
int  radius = 1 
)
inline

Draws circles to the array of points.

Parameters
imagePointer to the destination image.
pointsVector of points to be visualized.
colorUse CV_RGB(red,green,blue) to determine the color.
radiusCircle radius in pixels.

Definition at line 162 of file Draw.h.

◆ DrawTexture()

void ALVAR_EXPORT alvar::DrawTexture ( cv::Mat &  image,
cv::Mat &  texture,
Camera cam,
double  gl_modelview[16],
PointDouble  topleft,
PointDouble  botright 
)

Draws the texture generated by BuildHideTexture to given video frame. For better performance, use OpenGL instead. See SampleMarkerHide.cpp for example implementation.

Parameters
imagePointer to the destination image where the texture is drawn.
texurePointer to the texture image genereated by BuildHideTexture.
camCamera object that is used for marker tracking.
gl_modelviewCurrent model view matrix.
topleftTop left limit of the texture area in marker coordinate frame.
botrightBottom right limit of the texture area in marker coordinate frame.

◆ errorAtLine()

void ALVAR_EXPORT alvar::errorAtLine ( int  status,
int  error,
const char *  filename,
unsigned int  line,
const char *  format,
  ... 
)

Error reporting function inspired by error_at_line() on Linux.

It flushes stdout and prints the filename, line number and printf compatible error message to stderr. If error is specified, it also prints the corresponding error message from strerror(). If status is not zero, it exits the process.

◆ find_zero_crossings()

int ALVAR_EXPORT alvar::find_zero_crossings ( const std::vector< double > &  v,
std::vector< int > &  corners,
int  offs = 20 
)

Finds zero crossings of given vector elements (sequence).

Parameters
vSequence of numbers from where the zero crossings are found.
cornersResulting index list of zero crossings.
offs
Returns
Number of zero crossings found.

◆ FitCVEllipse()

void ALVAR_EXPORT alvar::FitCVEllipse ( const std::vector< PointDouble > &  points,
cv::RotatedRect &  ellipse_box 
)

Uses OpenCV routine to fit ellipse to a vector of points.

Parameters
pointsVector of points on the ellipse edge.
ellipse_boxOpenCV struct for the fitted ellipse.

◆ FitLines()

int ALVAR_EXPORT alvar::FitLines ( std::vector< Line > &  lines,
const std::vector< int > &  corners,
const std::vector< PointInt > &  edge 
)

Fit lines to vector of points.

Parameters
linesResulting set of lines.
cornersIndex list of line breaks.
edgeVector of points (pixels) where the line is fitted.
greyIn the future, we may want to fit lines directly to grayscale image instead of thresholded edge.

◆ Intersection()

PointDouble ALVAR_EXPORT alvar::Intersection ( const Line l1,
const Line l2 
)

Calculates an intersection point of two lines.

Parameters
l1First line.
l2Second line.
Returns
Intersection point.

◆ Limit()

double ALVAR_EXPORT alvar::Limit ( double  val,
double  min_val,
double  max_val 
)

Limits a number to between two values.

Parameters
valInput value.
min_valMinimum value for the result.
max_valMaximum value for the result.
Returns
Resulting value that is between min_val and max_val.

◆ linePointDist()

double ALVAR_EXPORT alvar::linePointDist ( const cv::Point &  A,
const cv::Point &  B,
const cv::Point &  C,
bool  isSegment 
)

Computes the distance from point C to line (segment) AB.

Parameters
isSegmentIf isSegment is true, AB is a segment, not a line.
Cpoint
Aabd B points defining line (segment) AB

◆ PointSquaredDistance()

double alvar::PointSquaredDistance ( PointType  p1,
PointType  p2 
)

Returns the squared distance of two points.

Parameters
p1First point.
p2Second point.
Returns
Squared distance.

Definition at line 119 of file Util.h.

◆ polyLinePointDist()

double ALVAR_EXPORT alvar::polyLinePointDist ( const std::vector< cv::Point > &  points,
const cv::Point &  C,
int *  index,
int  isClosedPolygon 
)

Calculates minimum distance from Point C to Polygon whose points are in list PointList.

Returns distance

Parameters
indexindex of point A in pointlist, where A is the starting point of the closest polygon segment
isClosedPolygonis true if polygon is closed (segment of the first and last point is also checked)

Variable Documentation

◆ ALVAR_VERSION_REVISION

const char* ALVAR_VERSION_REVISION = ""
static

Revision version string.

The revision contains an identifier from the source control system.

Definition at line 203 of file Alvar.h.

◆ ALVAR_VERSION_TAG

const char* ALVAR_VERSION_TAG = ""
static

Tag version string.

The tag contains alpha, beta and release candidate versions.

Definition at line 196 of file Alvar.h.