Package org.opencv.features2d

Class Features2d

  • public class Features2d
extends Object

    • 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.