Java Imgproc.floodFill方法代码示例

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static Mat RectangleSubROI(Mat input, Rect rect) {
	final Mat maskCopyTo = Mat.zeros(input.size(), CvType.CV_8UC1); // ����copyTo������mask����С��ԭͼ����һ��
	// floodFill��mask��width��height�����������ͼ��������������أ��������ᱨ��
	final Mat maskFloodFill = Mat.zeros(new Size(input.cols() + 2, input.rows() + 2), CvType.CV_8UC1); // ����floodFill������mask���ߴ��ԭͼ��һЩ
	// Imgproc.circle(maskCopyTo, new Point(cc.x, cc.y), radius, Scalar.all(255), 2,
	// 8, 0); // ����Բ������
	Imgproc.rectangle(maskCopyTo, rect.tl(), rect.br(), Scalar.all(255), 2, 8, 0);
	Imgproc.floodFill(maskCopyTo, maskFloodFill,
			new Point((rect.tl().x + rect.br().x) / 2, (rect.tl().y + rect.br().y) / 2), Scalar.all(255), null,
			Scalar.all(20), Scalar.all(20), 4); // ��ˮ��䷨���Բ���ڲ�
	// MatView.imshow(maskFloodFill, "Mask of floodFill"); // ����floodFill������mask
	// MatView.imshow(maskCopyTo, "Mask of copyTo"); // ����copyTo������mask
	final Mat imgRectROI = new Mat();
	input.copyTo(imgRectROI, maskCopyTo); // ��ȡԲ�ε�ROI
	// MatView.imshow(imgCircularROI, "Circular ROI"); // ��ʾԲ�ε�ROI
	return imgRectROI;
}
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static Mat Circle(Mat circularInput, Point cc, int radius) {
	final Mat maskCopyTo = Mat.zeros(circularInput.size(), CvType.CV_8UC1); // ����copyTo������mask����С��ԭͼ����һ��
	// floodFill��mask��width��height�����������ͼ��������������أ��������ᱨ��
	final Mat maskFloodFill = Mat.zeros(new Size(circularInput.cols() + 2, circularInput.rows() + 2),
			CvType.CV_8UC1); // ����floodFill������mask���ߴ��ԭͼ��һЩ
	Imgproc.circle(maskCopyTo, new Point(cc.x, cc.y), radius, Scalar.all(255), 2, 8, 0); // ����Բ������
	Imgproc.floodFill(maskCopyTo, maskFloodFill, new Point(207, 290), Scalar.all(255), null, Scalar.all(20),
			Scalar.all(20), 4); // ��ˮ��䷨���Բ���ڲ�
	// MatView.imshow(maskFloodFill, "Mask of floodFill"); // ����floodFill������mask
	// MatView.imshow(maskCopyTo, "Mask of copyTo"); // ����copyTo������mask
	final Mat imgCircularROI = new Mat();
	circularInput.copyTo(imgCircularROI, maskCopyTo); // ��ȡԲ�ε�ROI
	// MatView.imshow(imgCircularROI, "Circular ROI"); // ��ʾԲ�ε�ROI
	return imgCircularROI;
}
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static Mat irregularQuadrangle_Simplified(Mat irrInput, Point p1, Point p2, Point p3, Point p4,
		double shift_x, double shift_y, boolean noULandLRcorner, double ulCornerRatio, double lrCornerRatio) {
	final Mat maskCopyTo = Mat.zeros(irrInput.size(), CvType.CV_8UC1); // ����copyTo������mask����С��ԭͼ����һ��

	// �����ĵ���Ϊ��ʼ����
	final double centerX = (p1.x + p2.x + p3.x + p4.x) / 4;
	final double centerY = (p1.y + p2.y + p3.y + p4.y) / 4;
	final Point cc = new Point(centerX, centerY);

	final List<MatOfPoint> counter = new ArrayList<>();
	final Point aP1 = new Point(p1.x + shift_x, p1.y + shift_y);
	final Point aP2 = new Point(p2.x - shift_x, p2.y + shift_y);
	final Point aP3 = new Point(p3.x + shift_x, p3.y - shift_y);
	final Point aP4 = new Point(p4.x - shift_x, p4.y - shift_y);

	if (noULandLRcorner) {
		final Point aP1L = new Point(aP1.x, aP1.y + (aP3.y - aP1.y) * ulCornerRatio);
		final Point aP1R = new Point(aP1.x + (aP2.x - aP1.x) * ulCornerRatio, aP1.y);
		final Point aP4L = new Point(aP4.x - (aP4.x - aP3.x) * lrCornerRatio, aP4.y);
		final Point aP4R = new Point(aP4.x, aP4.y - (aP4.y - aP2.y) * lrCornerRatio);

		counter.add(new MatOfPoint(aP1L, aP1R, aP2, aP4R, aP4L, aP3)); // ����һ��������Ķ���Σ�û�����ϽǺ����½�
	} else
		counter.add(new MatOfPoint(aP1, aP2, aP4, aP3)); // ����һ��������Ķ����

	// floodFill��mask��width��height�����������ͼ��������������أ��������ᱨ��
	Imgproc.drawContours(maskCopyTo, counter, -1, Scalar.all(255)); // ��������
	// MatView.imshow(maskCopyTo, "Irregular shape edge");
	final Mat maskFloodFill = new Mat(irrInput.rows() + 2, irrInput.cols() + 2, CvType.CV_8UC1); // ����floodFill������mask���ߴ��ԭͼ��һЩ
	Imgproc.floodFill(maskCopyTo, maskFloodFill, new Point(centerX, centerY), Scalar.all(255), null, Scalar.all(20),
			Scalar.all(20), 4); // ��ˮ��䷨����ڲ�
	// MatView.imshow(maskFloodFill, "Irregular shape��Mask of floodFill"); //
	// ����copyTo������mask
	// MatView.imshow(maskCopyTo, "Irregular shape��Mask of copyTo"); //
	// ����floodFill������mask
	final Mat imgIrregularROI = new Mat();
	irrInput.copyTo(imgIrregularROI, maskCopyTo); // ��ȡ��������״��ROI
	// MatView.imshow(imgIrregularROI, "Irregular shape ROI");
	return imgIrregularROI;
}
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static void fillContour(Mat im, List<Point> contour, Point seed) {
    Mat mask = Mat.zeros(new Size(im.width() + 2, im.height() + 2), CvType.CV_8UC1);

    int len = contour.size();
    for (int i = 0; i < len; ++i) {
        int next_i = (i + 1) % len;
        Imgproc.line(im, contour.get(i), contour.get(next_i), Util.SCALAR_WHITE, 2);
    }
    Imgproc.floodFill(im, mask, seed, Util.SCALAR_WHITE);
}
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static Mat fillContours(Size size, List<MatOfPoint> contours, Point[] seeds) {
    Mat im = Mat.zeros(size, CvType.CV_8U);
    Mat mask = Mat.zeros(new Size(size.width + 2, size.height + 2), CvType.CV_8U);

    for (int ind = 0; ind < contours.size(); ++ind) {
        Imgproc.drawContours(mask, contours, ind, Util.SCALAR_WHITE);
    }

    for (Point p : seeds) {
        Imgproc.floodFill(im, mask, p, Util.SCALAR_WHITE);
    }

    return im;
}
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
private Mat doBackgroundRemovalFloodFill(Mat frame) {

        Scalar newVal = new Scalar(255, 255, 255);
        Scalar loDiff = new Scalar(50, 50, 50);
        Scalar upDiff = new Scalar(50, 50, 50);
        Point seedPoint = clickedPoint;
        Mat mask = new Mat();
        Rect rect = new Rect();

        // Imgproc.floodFill(frame, mask, seedPoint, newVal);
        Imgproc.floodFill(frame, mask, seedPoint, newVal, rect, loDiff, upDiff, Imgproc.FLOODFILL_FIXED_RANGE);

        return frame;
    }
 

import org.opencv.imgproc.Imgproc; //导入方法依赖的package包/类
public static Mat irregularQuadrangle(Mat irrInput, Point p1, Point p2, Point p3, Point p4, double shift,
		boolean noULandLRcorner, double ulCornerRatio, double lrCornerRatio) {
	final Mat maskCopyTo = Mat.zeros(irrInput.size(), CvType.CV_8UC1); // ����copyTo������mask����С��ԭͼ����һ��

	final double angle = MathBox.slopeAngle(p1, p2);
	// System.out.println(angle);
	final double sin = Math.sin(angle);
	final double cos = Math.cos(angle);

	// �����ĵ���Ϊ��ʼ����
	final double centerX = (p1.x + p2.x + p3.x + p4.x) / 4;
	final double centerY = (p1.y + p2.y + p3.y + p4.y) / 4;
	final Point cc = new Point(centerX, centerY);

	final List<MatOfPoint> counter = new ArrayList<>();
	final Point aP1raw = new Point(p1.x + shift, p1.y + shift);
	final Point aP2raw = new Point(p2.x - shift, p2.y + shift);
	final Point aP3raw = new Point(p3.x + shift, p3.y - shift);
	final Point aP4raw = new Point(p4.x - shift, p4.y - shift);

	final Point aP1 = MathBox.rotateAroundAPoint(cc, aP1raw, angle);
	final Point aP2 = MathBox.rotateAroundAPoint(cc, aP2raw, angle);
	final Point aP3 = MathBox.rotateAroundAPoint(cc, aP3raw, angle);
	final Point aP4 = MathBox.rotateAroundAPoint(cc, aP4raw, angle);

	if (noULandLRcorner) {
		final Point aP1Lraw = new Point(aP1.x, aP1.y + (aP3.y - aP1.y) * ulCornerRatio);
		final Point aP1Rraw = new Point(aP1.x + (aP2.x - aP1.x) * ulCornerRatio, aP1.y);
		final Point aP4Lraw = new Point(aP4.x - (aP4.x - aP3.x) * lrCornerRatio, aP4.y);
		final Point aP4Rraw = new Point(aP4.x, aP4.y - (aP4.y - aP2.y) * lrCornerRatio);

		final Point aP1L = MathBox.rotateAroundAPoint(cc, aP1Lraw, angle);
		final Point aP1R = MathBox.rotateAroundAPoint(cc, aP1Rraw, angle);
		final Point aP4L = MathBox.rotateAroundAPoint(cc, aP4Lraw, angle);
		final Point aP4R = MathBox.rotateAroundAPoint(cc, aP4Rraw, angle);

		counter.add(new MatOfPoint(aP1L, aP1R, aP2, aP4R, aP4L, aP3)); // ����һ��������Ķ���Σ�û�����ϽǺ����½�
	} else
		counter.add(new MatOfPoint(aP1, aP2, aP4, aP3)); // ����һ��������Ķ����

	// floodFill��mask��width��height�����������ͼ��������������أ��������ᱨ��
	Imgproc.drawContours(maskCopyTo, counter, -1, Scalar.all(255)); // ��������
	MatView.imshow(maskCopyTo, "Irregular shape edge");
	final Mat maskFloodFill = new Mat(irrInput.rows() + 2, irrInput.cols() + 2, CvType.CV_8UC1); // ����floodFill������mask���ߴ��ԭͼ��һЩ
	Imgproc.floodFill(maskCopyTo, maskFloodFill, new Point(centerX, centerY), Scalar.all(255), null, Scalar.all(20),
			Scalar.all(20), 4); // ��ˮ��䷨����ڲ�
	// MatView.imshow(maskFloodFill, "Irregular shape��Mask of floodFill"); //
	// ����copyTo������mask
	// MatView.imshow(maskCopyTo, "Irregular shape��Mask of copyTo"); //
	// ����floodFill������mask
	final Mat imgIrregularROI = new Mat();
	irrInput.copyTo(imgIrregularROI, maskCopyTo); // ��ȡ��������״��ROI
	// MatView.imshow(imgIrregularROI, "Irregular shape ROI");
	return imgIrregularROI;
}