Convert Gray image into LBP image

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Hello everyone,

I want to detect the eye blink in android OpenCV. I have been suggested to use LBP and SVM Classification for better results. I have been looking at different places including this and this but having trouble in understanding the code. I want the code in Java and I am having problems in converting the C++ code into Java as there are some function which are different in both of them. Can someone kindly give me a sample code to convert gray image to LBP image so that I can apply SVM on it. Need it badly. Please help.. Here is a code in C++. I need this in Java.

Mat LBP(Mat img){
Mat dst = Mat::zeros(img.rows-2, img.cols-2, CV_8UC1);
for(int i=1;i<img.rows-1;i++) {
    for(int j=1;j<img.cols-1;j++) {
        uchar center = img.at<uchar>(i,j);
        unsigned char code = 0;
        code |= ((img.at<uchar>(i-1,j-1)) > center) << 7;
            code |= ((img.at<uchar>(i-1,j)) > center) << 6;
        code |= ((img.at<uchar>(i-1,j+1)) > center) << 5;
        code |= ((img.at<uchar>(i,j+1)) > center) << 4;
        code |= ((img.at<uchar>(i+1,j+1)) > center) << 3;
        code |= ((img.at<uchar>(i+1,j)) > center) << 2;
        code |= ((img.at<uchar>(i+1,j-1)) > center) << 1;
        code |= ((img.at<uchar>(i,j-1)) > center) << 0;
        dst.at<uchar>(i-1,j-1) = code;
    }
}
return dst;

}

Thanks in advance.