org.opencv.features2d

Class Features2d

java.lang.Object

org.opencv.features2d.Features2d

public class Features2d
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	DrawMatchesFlags_DEFAULT
static int	DrawMatchesFlags_DRAW_OVER_OUTIMG
static int	DrawMatchesFlags_DRAW_RICH_KEYPOINTS
static int	DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS

Constructor Summary

Constructors

Constructor and Description
Features2d()

Method Summary

Modifier and Type	Method and Description
static void	drawKeypoints(Mat image, MatOfKeyPoint keypoints, Mat outImage) Draws keypoints.
static void	drawKeypoints(Mat image, MatOfKeyPoint keypoints, Mat outImage, Scalar color) Draws keypoints.
static void	drawKeypoints(Mat image, MatOfKeyPoint keypoints, Mat outImage, Scalar color, int flags) Draws keypoints.
static void	drawMatches(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, MatOfDMatch matches1to2, Mat outImg) Draws the found matches of keypoints from two images.
static void	drawMatches(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, MatOfDMatch matches1to2, Mat outImg, Scalar matchColor) Draws the found matches of keypoints from two images.
static void	drawMatches(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, MatOfDMatch matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor) Draws the found matches of keypoints from two images.
static void	drawMatches(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, MatOfDMatch matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor, MatOfByte matchesMask) Draws the found matches of keypoints from two images.
static void	drawMatches(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, MatOfDMatch matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor, MatOfByte matchesMask, int flags) Draws the found matches of keypoints from two images.
static void	drawMatchesKnn(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, List<MatOfDMatch> matches1to2, Mat outImg)
static void	drawMatchesKnn(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, List<MatOfDMatch> matches1to2, Mat outImg, Scalar matchColor)
static void	drawMatchesKnn(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, List<MatOfDMatch> matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor)
static void	drawMatchesKnn(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, List<MatOfDMatch> matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor, List<MatOfByte> matchesMask)
static void	drawMatchesKnn(Mat img1, MatOfKeyPoint keypoints1, Mat img2, MatOfKeyPoint keypoints2, List<MatOfDMatch> matches1to2, Mat outImg, Scalar matchColor, Scalar singlePointColor, List<MatOfByte> matchesMask, int flags)

Methods inherited from class java.lang.Object

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

Field Detail

DrawMatchesFlags_DEFAULT

public static final int DrawMatchesFlags_DEFAULT

See Also:

Constant Field Values

DrawMatchesFlags_DRAW_OVER_OUTIMG

public static final int DrawMatchesFlags_DRAW_OVER_OUTIMG

See Also:

Constant Field Values

DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS

public static final int DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS

See Also:

Constant Field Values

DrawMatchesFlags_DRAW_RICH_KEYPOINTS

public static final int DrawMatchesFlags_DRAW_RICH_KEYPOINTS

See Also:

Constant Field Values

Constructor Detail

Features2d

public Features2d()

Method Detail

drawKeypoints

public static void drawKeypoints(Mat image,
                                 MatOfKeyPoint keypoints,
                                 Mat outImage,
                                 Scalar color,
                                 int flags)

Draws keypoints.

Parameters:

image - Source image.

keypoints - Keypoints from the source image.

outImage - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

color - Color of keypoints.

flags - Flags setting drawing features. Possible flags bit values are defined by DrawMatchesFlags. See details above in drawMatches . Note: For Python API, flags are modified as cv.DRAW_MATCHES_FLAGS_DEFAULT, cv.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv.DRAW_MATCHES_FLAGS_DRAW_OVER_OUTIMG, cv.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS

drawKeypoints

public static void drawKeypoints(Mat image,
                                 MatOfKeyPoint keypoints,
                                 Mat outImage,
                                 Scalar color)

Draws keypoints.

Parameters:

image - Source image.

keypoints - Keypoints from the source image.

outImage - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

color - Color of keypoints. DrawMatchesFlags. See details above in drawMatches . Note: For Python API, flags are modified as cv.DRAW_MATCHES_FLAGS_DEFAULT, cv.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv.DRAW_MATCHES_FLAGS_DRAW_OVER_OUTIMG, cv.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS

drawKeypoints

public static void drawKeypoints(Mat image,
                                 MatOfKeyPoint keypoints,
                                 Mat outImage)

Draws keypoints.

Parameters:

image - Source image.

keypoints - Keypoints from the source image.

outImage - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below. DrawMatchesFlags. See details above in drawMatches . Note: For Python API, flags are modified as cv.DRAW_MATCHES_FLAGS_DEFAULT, cv.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv.DRAW_MATCHES_FLAGS_DRAW_OVER_OUTIMG, cv.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS

drawMatches

public static void drawMatches(Mat img1,
                               MatOfKeyPoint keypoints1,
                               Mat img2,
                               MatOfKeyPoint keypoints2,
                               MatOfDMatch matches1to2,
                               Mat outImg,
                               Scalar matchColor,
                               Scalar singlePointColor,
                               MatOfByte matchesMask,
                               int flags)

Draws the found matches of keypoints from two images.

Parameters:

img1 - First source image.

keypoints1 - Keypoints from the first source image.

img2 - Second source image.

keypoints2 - Keypoints from the second source image.

matches1to2 - Matches from the first image to the second one, which means that keypoints1[i] has a corresponding point in keypoints2[matches[i]] .

outImg - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

matchColor - Color of matches (lines and connected keypoints). If matchColor==Scalar::all(-1) , the color is generated randomly.

singlePointColor - Color of single keypoints (circles), which means that keypoints do not have the matches. If singlePointColor==Scalar::all(-1) , the color is generated randomly.

matchesMask - Mask determining which matches are drawn. If the mask is empty, all matches are drawn.

flags - Flags setting drawing features. Possible flags bit values are defined by DrawMatchesFlags. This function draws matches of keypoints from two images in the output image. Match is a line connecting two keypoints (circles). See cv::DrawMatchesFlags.

drawMatches

public static void drawMatches(Mat img1,
                               MatOfKeyPoint keypoints1,
                               Mat img2,
                               MatOfKeyPoint keypoints2,
                               MatOfDMatch matches1to2,
                               Mat outImg,
                               Scalar matchColor,
                               Scalar singlePointColor,
                               MatOfByte matchesMask)

Draws the found matches of keypoints from two images.

Parameters:

img1 - First source image.

keypoints1 - Keypoints from the first source image.

img2 - Second source image.

keypoints2 - Keypoints from the second source image.

matches1to2 - Matches from the first image to the second one, which means that keypoints1[i] has a corresponding point in keypoints2[matches[i]] .

outImg - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

matchColor - Color of matches (lines and connected keypoints). If matchColor==Scalar::all(-1) , the color is generated randomly.

singlePointColor - Color of single keypoints (circles), which means that keypoints do not have the matches. If singlePointColor==Scalar::all(-1) , the color is generated randomly.

matchesMask - Mask determining which matches are drawn. If the mask is empty, all matches are drawn. DrawMatchesFlags. This function draws matches of keypoints from two images in the output image. Match is a line connecting two keypoints (circles). See cv::DrawMatchesFlags.

drawMatches

public static void drawMatches(Mat img1,
                               MatOfKeyPoint keypoints1,
                               Mat img2,
                               MatOfKeyPoint keypoints2,
                               MatOfDMatch matches1to2,
                               Mat outImg,
                               Scalar matchColor,
                               Scalar singlePointColor)

Draws the found matches of keypoints from two images.

Parameters:

img1 - First source image.

keypoints1 - Keypoints from the first source image.

img2 - Second source image.

keypoints2 - Keypoints from the second source image.

matches1to2 - Matches from the first image to the second one, which means that keypoints1[i] has a corresponding point in keypoints2[matches[i]] .

outImg - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

matchColor - Color of matches (lines and connected keypoints). If matchColor==Scalar::all(-1) , the color is generated randomly.

singlePointColor - Color of single keypoints (circles), which means that keypoints do not have the matches. If singlePointColor==Scalar::all(-1) , the color is generated randomly. drawn. DrawMatchesFlags. This function draws matches of keypoints from two images in the output image. Match is a line connecting two keypoints (circles). See cv::DrawMatchesFlags.

drawMatches

public static void drawMatches(Mat img1,
                               MatOfKeyPoint keypoints1,
                               Mat img2,
                               MatOfKeyPoint keypoints2,
                               MatOfDMatch matches1to2,
                               Mat outImg,
                               Scalar matchColor)

Draws the found matches of keypoints from two images.

Parameters:

img1 - First source image.

keypoints1 - Keypoints from the first source image.

img2 - Second source image.

keypoints2 - Keypoints from the second source image.

matches1to2 - Matches from the first image to the second one, which means that keypoints1[i] has a corresponding point in keypoints2[matches[i]] .

outImg - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below.

matchColor - Color of matches (lines and connected keypoints). If matchColor==Scalar::all(-1) , the color is generated randomly. have the matches. If singlePointColor==Scalar::all(-1) , the color is generated randomly. drawn. DrawMatchesFlags. This function draws matches of keypoints from two images in the output image. Match is a line connecting two keypoints (circles). See cv::DrawMatchesFlags.

drawMatches

public static void drawMatches(Mat img1,
                               MatOfKeyPoint keypoints1,
                               Mat img2,
                               MatOfKeyPoint keypoints2,
                               MatOfDMatch matches1to2,
                               Mat outImg)

Draws the found matches of keypoints from two images.

Parameters:

img1 - First source image.

keypoints1 - Keypoints from the first source image.

img2 - Second source image.

keypoints2 - Keypoints from the second source image.

matches1to2 - Matches from the first image to the second one, which means that keypoints1[i] has a corresponding point in keypoints2[matches[i]] .

outImg - Output image. Its content depends on the flags value defining what is drawn in the output image. See possible flags bit values below. , the color is generated randomly. have the matches. If singlePointColor==Scalar::all(-1) , the color is generated randomly. drawn. DrawMatchesFlags. This function draws matches of keypoints from two images in the output image. Match is a line connecting two keypoints (circles). See cv::DrawMatchesFlags.

drawMatchesKnn

public static void drawMatchesKnn(Mat img1,
                                  MatOfKeyPoint keypoints1,
                                  Mat img2,
                                  MatOfKeyPoint keypoints2,
                                  List<MatOfDMatch> matches1to2,
                                  Mat outImg,
                                  Scalar matchColor,
                                  Scalar singlePointColor,
                                  List<MatOfByte> matchesMask,
                                  int flags)

drawMatchesKnn

public static void drawMatchesKnn(Mat img1,
                                  MatOfKeyPoint keypoints1,
                                  Mat img2,
                                  MatOfKeyPoint keypoints2,
                                  List<MatOfDMatch> matches1to2,
                                  Mat outImg,
                                  Scalar matchColor,
                                  Scalar singlePointColor,
                                  List<MatOfByte> matchesMask)

drawMatchesKnn

public static void drawMatchesKnn(Mat img1,
                                  MatOfKeyPoint keypoints1,
                                  Mat img2,
                                  MatOfKeyPoint keypoints2,
                                  List<MatOfDMatch> matches1to2,
                                  Mat outImg,
                                  Scalar matchColor,
                                  Scalar singlePointColor)

drawMatchesKnn

public static void drawMatchesKnn(Mat img1,
                                  MatOfKeyPoint keypoints1,
                                  Mat img2,
                                  MatOfKeyPoint keypoints2,
                                  List<MatOfDMatch> matches1to2,
                                  Mat outImg,
                                  Scalar matchColor)

drawMatchesKnn

public static void drawMatchesKnn(Mat img1,
                                  MatOfKeyPoint keypoints1,
                                  Mat img2,
                                  MatOfKeyPoint keypoints2,
                                  List<MatOfDMatch> matches1to2,
                                  Mat outImg)