1 | initial version |
Try that:
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;
}