imRef(im, x, y)表示什么含义 紧急，谢谢了

Question

距离变换这部分代码中出现的
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
f[y] = imRef(im, x, y);
}
float *d = dt(f, height);
for (int y = 0; y < height; y++) {
imRef(im, x, y) = d[y];
}
delete [] d;
}

Answer 1

我猜im应该是一张图片，然后imref应该是取其x，y坐标下的灰度值

Answer 2

你可以不回答 你用的是什么语言

Answer 3

sorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorrysorry