对数据归一化显示

对数组中的值归一化，然后拉伸显示

std::vector<float> norms(vertices.size());
std::vector<uchar> normsC(vertices.size());
int i(0);
for(v:vertices) {
	norms[i++] = norm(v);
}
cv::normalize(norms, norms, 1.0, 0.0, cv::NORM_MINMAX);
i = 0;
for (auto& n : norms)
{
	normsC[i++] = n * 255;
}
cv::equalizeHist(normsC, normsC);