public static void lakeRemove() {
		try {
			System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
			Mat source = Imgcodecs.imread("lake.png", Imgcodecs.CV_LOAD_IMAGE_COLOR);
			Mat sourceClone = source.clone();

			Imgproc.cvtColor(source, source, Imgproc.COLOR_BGR2GRAY, 0);
//			Imgcodecs.imwrite("noLake1.png", source);

			Mat morph = Imgproc.getStructuringElement(Imgproc.MORPH_RECT, new Size(9, 3));
			Imgproc.morphologyEx(source, source, Imgproc.MORPH_TOPHAT, morph);
//			Imgcodecs.imwrite("noLake2.png", source);

			Imgproc.threshold(source, source, 0, 255, Imgproc.THRESH_OTSU);
//			Imgcodecs.imwrite("noLake3.png", source);

			Imgproc.adaptiveThreshold(source, source, 255, Imgproc.ADAPTIVE_THRESH_GAUSSIAN_C,
					Imgproc.THRESH_BINARY_INV, 13, 2);
//			Imgcodecs.imwrite("noLake4.png", source);

			// Imgcodecs.imwrite("cc.png", sourceClone);

			for (int i = 0; i < source.rows(); i++) {
				for (int j = 0; j < source.cols(); j++) {

					double[] d = source.get(i, j);
					// System.out.println(d.length);
					// System.out.println(d[0]);
					if (d[0] == 255) {
						source.put(i, j + 1, d);
						source.put(i, j + 2, d);
						source.put(i, j + 3, d);
						source.put(i, j + 4, d);
						source.put(i, j + 5, d);
						source.put(i, j + 6, d);
						source.put(i, j + 7, d);


						j += 7;
					}
				}
			}
//			Imgcodecs.imwrite("noLake5.png", source);
			Mat destination = new Mat(source.rows(), source.cols(), source.type());

			for (int i = 0; i < source.rows(); i++) {
				for (int j = 0; j < source.cols(); j++) {

					double[] d = source.get(i, j);
					// System.out.println(d.length);
					if (d[0] == 255)
						destination.put(i, j, sourceClone.get(i, j));
					else
						destination.put(i, j, d);
				}

				Imgcodecs.imwrite("noLake.png", destination);

			}

		} catch (Exception e) {
			System.out.println("error: " + e.getMessage());
		}

	}