-
Trackbar
手动调整Trackbar可以得到值，然后根据值进行高斯滤波。
void on_trackbar(int slideValue, void*) {
Mat imFiltered;
//要为奇数
GaussianBlur(src, imFiltered, Size(slideValue/2*2+1, slideValue / 2 * 2 +1), 0);
imshow(windowName,imFiltered);
}
int main() {
int slideValue;
src = imread("lena.jpg");
namedWindow(windowName,WINDOW_FREERATIO);
createTrackbar("myTrackBar",windowName, &slideValue, maxSlideValue, on_trackbar);
on_trackbar(0, NULL);
END:
waitKey(0);
system("pause");
return 0;
}
- 定义Pixel
typedef Vec3b Pixel;
typedef Point_<uchar> Pixel;
typedef Point3_<uchar> Pixel;
- Mat迭代器与const Mat迭代器
MatIterator_<Pixel> rgb_first = rgb_image.begin<Pixel>();
MatIterator_<Pixel> rgb_end = rgb_image.end<Pixel>();
MatConstIterator_<int> labes_first = labels.begin<int>();
