boofcv.alg.fiducial.calib.chess

Class DetectChessSquarePoints<T extends ImageGray>

java.lang.Object

boofcv.alg.fiducial.calib.chess.DetectChessSquarePoints<T>

public class DetectChessSquarePoints<T extends ImageGray>
extends java.lang.Object

Given a binary image it detects the presence of chess board calibration grids. 1) Detect blobs in binary image and select square like ones. 2) Create two grids, inner and outer, 3) Put the grids together, 4) extract initial estimate for corners

Constructor Summary

Constructors

Constructor and Description
DetectChessSquarePoints(int numRows, int numCols, double maxCornerDistance, BinaryPolygonDetector<T> detectorSquare) Configures chess board detector.

Method Summary

Modifier and Type	Method and Description
FastQueue<Point2D_F64>	getCalibrationPoints()
BinaryPolygonDetector<T>	getDetectorSquare()
java.util.List<java.util.List<SquareNode>>	getGraphs()
CrossClustersIntoGrids	getGrids()
int	getNumCols()
int	getNumRows()
SquaresIntoCrossClusters	getShapeToClusters()
boolean	process(T input, GrayU8 binary) Detects chessboard in the binary image.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DetectChessSquarePoints

public DetectChessSquarePoints(int numRows,
                               int numCols,
                               double maxCornerDistance,
                               BinaryPolygonDetector<T> detectorSquare)

Configures chess board detector.

Parameters:

numRows - Number of rows in square grid

numCols - Number of columns in square grid

maxCornerDistance - Maximum distance in pixels that two "overlapping" corners can be from each other.

Method Detail

process

public boolean process(T input,
                       GrayU8 binary)

Detects chessboard in the binary image. Square corners must be disconnected. Returns true if a chessboard was found, false otherwise.

Parameters:

input - Original input image.

binary - Binary image of chessboard

Returns:

True if successful.

getGraphs

public java.util.List<java.util.List<SquareNode>> getGraphs()

getShapeToClusters

public SquaresIntoCrossClusters getShapeToClusters()

getGrids

public CrossClustersIntoGrids getGrids()

getDetectorSquare

public BinaryPolygonDetector<T> getDetectorSquare()

getCalibrationPoints

public FastQueue<Point2D_F64> getCalibrationPoints()

getNumRows

public int getNumRows()

getNumCols

public int getNumCols()