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I have the following Python code:

ret,thresh = cv2.threshold(gray,5,255,cv2.THRESH_TOZERO)
kernel1 = cv2.getStructuringElement(cv2.MORPH_ELLIPSE,(11,11))
kernel2 = np.ones((3,3),np.uint8)
erosion = cv2.erode(thresh,kernel2,iterations = 1)
dilation = cv2.dilate(erosion,kernel1,iterations = 7)
I'm trying to convert it to Java. This is my current version:
double thresh = Imgproc.threshold(gray, gray, 5, 255, Imgproc.THRESH_TOZERO);
Mat kernel1 = Imgproc.getStructuringElement(Imgproc.MORPH_ELLIPSE, new Size(11, 11));
Mat kernel2 = Mat.ones(3, 3, CvType.CV_8U);
Mat erosion = new Mat();
Imgproc.erode(gray, erosion, kernel2);
Mat dilation = new Mat();
Imgproc.dilate(erosion, dilation, kernel1);
Right now I'm unable to find a place where thresh parameter should be applied and also I'm not using the iterations parameter for Imgproc.erode and Imgproc.dilate methods because the method signature in this case also requires additional Point anchor parameter which I do not have right now.
How to properly convert this code to Java?
UPDATED
I do the following translation:
Mat erosion = new Mat();
Imgproc.erode(gray, erosion, kernel2, new Point(), 1);
Mat dilation = new Mat();
Imgproc.dilate(erosion, dilation, kernel1, new Point(), 7);
and looks like it is working as expected but I'm not sure about new Point() Is it a correct translation?
Here are the dilate declarations in C++/Python/Java:
C++: void dilate(InputArray src, OutputArray dst, InputArray kernel, 
        Point anchor=Point(-1,-1),
        int iterations=1,
        int borderType=BORDER_CONSTANT,
        const Scalar& borderValue=morphologyDefaultBorderValue() )
Python: cv2.dilate(src, kernel[, dst
            [, anchor[, iterations[, borderType[, borderValue]]]]]) → dst
Java: static void dilate(Mat src, Mat dst, Mat kernel, Point anchor, int iterations)
Because there is no default value for anchor if you want to use the param iterations. So pass new Point(-1,-1) is a better choice.
Imgproc.dilate(src, dst, kernel, new Point(-1,-1), iterations);
        
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