org.bytedeco.javacv

Class JavaCV

java.lang.Object

org.bytedeco.javacv.JavaCV

public class JavaCV
extends Object

Author:

Samuel Audet

Field Summary

Fields

Modifier and Type	Field and Description
static double	DBL_EPSILON
static double	FLT_EPSILON
static double	SQRT2

Constructor Summary

Constructors

Constructor and Description
JavaCV()

Method Summary

Modifier and Type	Method and Description
static void	adaptiveThreshold(IplImage srcImage, IplImage sumImage, IplImage sqSumImage, IplImage dstImage, boolean invert, int windowMax, int windowMin, double varMultiplier, double k) more sophisticated than cvAdaptiveThreshold()
static CvBox2D	boundedRect(CvMat contour, CvBox2D box)
static CvRect	boundingRect(double[] contour, CvRect rect, int padX, int padY, int alignX, int alignY) Similar to cvBoundingRect(), but can also pad the output with some extra pixels, useful to use as ROI for operations with interpolation.
static void	clamp(IplImage src, IplImage dst, double min, double max) Clamps image intensities between min and max.
static double	cond(CvMat A)
static double	cond(CvMat A, double p)
static double	cond(CvMat A, double p, CvMat W)
static double	distanceToLine(double x1, double y1, double x2, double y2, double x3, double y3) returns the distance^2 between the line (x1, y1) (x2, y2) and the point (x3, y3)
static void	fractalTriangleWave(double[] line, int i, int j, double a)
static void	fractalTriangleWave(double[] line, int i, int j, double a, int roughness)
static void	fractalTriangleWave(IplImage image, CvMat H)
static void	fractalTriangleWave(IplImage image, CvMat H, int roughness)
static CvMat	getPerspectiveTransform(double[] src, double[] dst, CvMat map_matrix) this is basically cvGetPerspectiveTransform() using CV_LU instead of CV_SVD, because the latter gives inaccurate results...
static CvMat	getPerspectiveTransform(double[] src, double[] dst, CvMat invSrcK, CvMat dstK, CvMat R, CvMat t, CvMat H)
static CvMat	getPlaneParameters(double[] src, double[] dst, CvMat invSrcK, CvMat dstK, CvMat R, CvMat t, CvMat n)
static double	HnToRt(CvMat H, CvMat n, CvMat R, CvMat t)
static double	homogToRt(CvMat H, CvMat R1, CvMat t1, CvMat n1, CvMat R2, CvMat t2, CvMat n2) Ported to Java/OpenCV from Bill Triggs.
static double	homogToRt(CvMat S, CvMat U, CvMat V, CvMat R1, CvMat t1, CvMat n1, CvMat R2, CvMat t2, CvMat n2)
static void	HtoRt(CvMat H, CvMat R, CvMat t) Algorithms for Plane-Based Pose Estimation, Peter Sturm This assumes plane parameters n == z axis.
static void	hysteresisThreshold(IplImage srcImage, IplImage dstImage, double highThresh, double lowThresh, double maxValue) similar to hysteresis thresholding as used by the Canny edge detector
static void	main(String[] args)
static double	median(double[] doubles)
static <T> T	median(T[] objects)
static double	norm(CvMat A) induced norm 2
static double	norm(CvMat A, double p) induced norm p
static double	norm(CvMat A, double p, CvMat W) induced norm p
static double	norm(double[] v) vector norm 2
static double	norm(double[] v, double p) vector norm p
static void	perspectiveTransform(double[] src, double[] dst, CvMat map_matrix) Consider using opencv_core.perspectiveTransform(org.bytedeco.opencv.opencv_core.Mat, org.bytedeco.opencv.opencv_core.Mat, org.bytedeco.opencv.opencv_core.Mat) instead.
static void	perspectiveTransform(double[] src, double[] dst, CvMat invSrcK, CvMat dstK, CvMat R, CvMat t, CvMat n, boolean invert)
static double[]	unitize(double a, double b)

Methods inherited from class java.lang.Object

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

Field Detail

SQRT2

public static final double SQRT2

See Also:

Constant Field Values

FLT_EPSILON

public static final double FLT_EPSILON

See Also:

Constant Field Values

DBL_EPSILON

public static final double DBL_EPSILON

See Also:

Constant Field Values

Constructor Detail

JavaCV

public JavaCV()

Method Detail

distanceToLine

public static double distanceToLine(double x1,
                                    double y1,
                                    double x2,
                                    double y2,
                                    double x3,
                                    double y3)

returns the distance^2 between the line (x1, y1) (x2, y2) and the point (x3, y3)

boundedRect

public static CvBox2D boundedRect(CvMat contour,
                                  CvBox2D box)

boundingRect

public static CvRect boundingRect(double[] contour,
                                  CvRect rect,
                                  int padX,
                                  int padY,
                                  int alignX,
                                  int alignY)

Similar to cvBoundingRect(), but can also pad the output with some extra pixels, useful to use as ROI for operations with interpolation. Further aligns the region to specified boundaries, for easier vectorization and subsampling, and also uses on input the rect argument as a maximum boundary.

getPerspectiveTransform

public static CvMat getPerspectiveTransform(double[] src,
                                            double[] dst,
                                            CvMat map_matrix)

this is basically cvGetPerspectiveTransform() using CV_LU instead of CV_SVD, because the latter gives inaccurate results... Consider using opencv_imgproc.getPerspectiveTransform(org.bytedeco.opencv.opencv_core.Mat, org.bytedeco.opencv.opencv_core.Mat, int) instead.

perspectiveTransform

public static void perspectiveTransform(double[] src,
                                        double[] dst,
                                        CvMat map_matrix)

Consider using opencv_core.perspectiveTransform(org.bytedeco.opencv.opencv_core.Mat, org.bytedeco.opencv.opencv_core.Mat, org.bytedeco.opencv.opencv_core.Mat) instead.

getPlaneParameters

public static CvMat getPlaneParameters(double[] src,
                                       double[] dst,
                                       CvMat invSrcK,
                                       CvMat dstK,
                                       CvMat R,
                                       CvMat t,
                                       CvMat n)

getPerspectiveTransform

public static CvMat getPerspectiveTransform(double[] src,
                                            double[] dst,
                                            CvMat invSrcK,
                                            CvMat dstK,
                                            CvMat R,
                                            CvMat t,
                                            CvMat H)

perspectiveTransform

public static void perspectiveTransform(double[] src,
                                        double[] dst,
                                        CvMat invSrcK,
                                        CvMat dstK,
                                        CvMat R,
                                        CvMat t,
                                        CvMat n,
                                        boolean invert)

HtoRt

public static void HtoRt(CvMat H,
                         CvMat R,
                         CvMat t)

Algorithms for Plane-Based Pose Estimation, Peter Sturm This assumes plane parameters n == z axis.

HnToRt

public static double HnToRt(CvMat H,
                            CvMat n,
                            CvMat R,
                            CvMat t)

homogToRt

public static double homogToRt(CvMat H,
                               CvMat R1,
                               CvMat t1,
                               CvMat n1,
                               CvMat R2,
                               CvMat t2,
                               CvMat n2)

Ported to Java/OpenCV from Bill Triggs. Autocalibration from Planar Scenes. In 5th European Conference on Computer Vision (ECCV ’98), volume I, pages 89–105. Springer-Verlag, 1998.

homogToRt

public static double homogToRt(CvMat S,
                               CvMat U,
                               CvMat V,
                               CvMat R1,
                               CvMat t1,
                               CvMat n1,
                               CvMat R2,
                               CvMat t2,
                               CvMat n2)

unitize

public static double[] unitize(double a,
                               double b)

adaptiveThreshold

public static void adaptiveThreshold(IplImage srcImage,
                                     IplImage sumImage,
                                     IplImage sqSumImage,
                                     IplImage dstImage,
                                     boolean invert,
                                     int windowMax,
                                     int windowMin,
                                     double varMultiplier,
                                     double k)

more sophisticated than cvAdaptiveThreshold()

hysteresisThreshold

public static void hysteresisThreshold(IplImage srcImage,
                                       IplImage dstImage,
                                       double highThresh,
                                       double lowThresh,
                                       double maxValue)

similar to hysteresis thresholding as used by the Canny edge detector

clamp

public static void clamp(IplImage src,
                         IplImage dst,
                         double min,
                         double max)

Clamps image intensities between min and max.

norm

public static double norm(double[] v)

vector norm 2

norm

public static double norm(double[] v,
                          double p)

vector norm p

norm

public static double norm(CvMat A)

induced norm 2

norm

public static double norm(CvMat A,
                          double p)

induced norm p

norm

public static double norm(CvMat A,
                          double p,
                          CvMat W)

induced norm p

cond

public static double cond(CvMat A)

cond

public static double cond(CvMat A,
                          double p)

cond

public static double cond(CvMat A,
                          double p,
                          CvMat W)

median

public static double median(double[] doubles)

median

public static <T> T median(T[] objects)

fractalTriangleWave

public static void fractalTriangleWave(double[] line,
                                       int i,
                                       int j,
                                       double a)

fractalTriangleWave

public static void fractalTriangleWave(double[] line,
                                       int i,
                                       int j,
                                       double a,
                                       int roughness)

fractalTriangleWave

public static void fractalTriangleWave(IplImage image,
                                       CvMat H)

fractalTriangleWave

public static void fractalTriangleWave(IplImage image,
                                       CvMat H,
                                       int roughness)

main

public static void main(String[] args)