Examples with Point org.opencv.core.Point used on opensource projects

Example 26 with Point

use of org.opencv.core.Point in project kifu-recorder by leonardost.

the class ImageUtils method generateOrthogonalBoardImage.

public static Mat generateOrthogonalBoardImage(Mat image, Corner[] corners) {
    Mat orthogonalBoardImage = new Mat(ORTHOGONAL_BOARD_IMAGE_SIZE, ORTHOGONAL_BOARD_IMAGE_SIZE, image.type());
    Mat orthogonalImageCorners = new Mat(4, 1, CvType.CV_32FC2);
    orthogonalImageCorners.put(0, 0, 0, 0, ORTHOGONAL_BOARD_IMAGE_SIZE, 0, ORTHOGONAL_BOARD_IMAGE_SIZE, ORTHOGONAL_BOARD_IMAGE_SIZE, 0, ORTHOGONAL_BOARD_IMAGE_SIZE);
    Point[] realCornerPositions = new Point[4];
    for (int i = 0; i < 4; i++) {
        Ponto realCornerPosition = corners[i].getRealCornerPosition();
        realCornerPositions[i] = new Point(realCornerPosition.x, realCornerPosition.y);
    }
    Mat boardPositionInImage = new Mat(4, 1, CvType.CV_32FC2);
    boardPositionInImage.put(0, 0, realCornerPositions[0].x, realCornerPositions[0].y, realCornerPositions[1].x, realCornerPositions[1].y, realCornerPositions[2].x, realCornerPositions[2].y, realCornerPositions[3].x, realCornerPositions[3].y);
    Mat transformationMatrix = Imgproc.getPerspectiveTransform(boardPositionInImage, orthogonalImageCorners);
    Imgproc.warpPerspective(image, orthogonalBoardImage, transformationMatrix, orthogonalBoardImage.size());
    return orthogonalBoardImage;
}

Example 27 with Point

use of org.opencv.core.Point in project kifu-recorder by leonardost.

the class ImageUtils method rotateImage.

// direction = -1 counter-clockwise, 1 clockwise
public static Mat rotateImage(Mat image, int direction) {
    Point center = new Point(image.cols() / 2, image.rows() / 2);
    // Positive values mean counter-clockwise rotation
    direction *= -1;
    Mat transformationMatrix = Imgproc.getRotationMatrix2D(center, 90 * direction, 1);
    Mat rotatedImage = new Mat();
    Imgproc.warpAffine(image, rotatedImage, transformationMatrix, new Size(image.cols(), image.rows()));
    return rotatedImage;
}

Example 28 with Point

use of org.opencv.core.Point in project kifu-recorder by leonardost.

the class BoardDetectorByQuadrilateralCounting method addBlackBorderAround.

private Mat addBlackBorderAround(Mat image) {
    Mat imageWithBlackBorder = image.clone();
    Imgproc.rectangle(imageWithBlackBorder, new Point(0, 0), new Point(499, 499), new Scalar(0, 0, 0), 1);
    return imageWithBlackBorder;
}

Example 29 with Point

use of org.opencv.core.Point in project kifu-recorder by leonardost.

the class BoardDetectorByQuadrilateralCounting method detectContoursIn.

private List<MatOfPoint> detectContoursIn(Mat imageWithBordersDetected) {
    List<MatOfPoint> contours = new ArrayList<>();
    Mat hierarchy = new Mat();
    Imgproc.findContours(imageWithBordersDetected, contours, hierarchy, Imgproc.RETR_LIST, Imgproc.CHAIN_APPROX_SIMPLE, new Point(0, 0));
    removeSmallContours(contours);
    return contours;
}

Example 30 with Point

use of org.opencv.core.Point in project kifu-recorder by leonardost.

the class FirstEllipseDetector method detectContoursIn.

private List<MatOfPoint> detectContoursIn(Mat imageWithBordersDetected) {
    List<MatOfPoint> contours = new ArrayList<>();
    Mat hierarchy = new Mat();
    // Imgproc.findContours(imageWithBordersDetected, contours, hierarchy, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE, new Point(0, 0));
    Imgproc.findContours(imageWithBordersDetected, contours, hierarchy, Imgproc.RETR_LIST, Imgproc.CHAIN_APPROX_SIMPLE, new Point(0, 0));
    removeSmallContours(contours);
    System.out.println("Number of contours found in scene: " + contours.size());
    return contours;
}