本文整理汇总了C++中cv::Ptr::calc方法的典型用法代码示例。如果您正苦于以下问题：C++ Ptr::calc方法的具体用法？C++ Ptr::calc怎么用？C++ Ptr::calc使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cv::Ptr的用法示例。
在下文中一共展示了Ptr::calc方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1:
std::vector<bbox_t> tracking_flow(cv::Mat new_dst_mat, bool check_error = true)
{
if (sync_PyrLKOpticalFlow.empty()) {
std::cout << "sync_PyrLKOpticalFlow isn't initialized \n";
return cur_bbox_vec;
}
cv::cvtColor(new_dst_mat, dst_grey, CV_BGR2GRAY, 1);
if (src_grey.rows != dst_grey.rows || src_grey.cols != dst_grey.cols) {
src_grey = dst_grey.clone();
return cur_bbox_vec;
}
if (prev_pts_flow.cols < 1) {
return cur_bbox_vec;
}
////sync_PyrLKOpticalFlow_gpu.sparse(src_grey_gpu, dst_grey_gpu, prev_pts_flow_gpu, cur_pts_flow_gpu, status_gpu, &err_gpu); // OpenCV 2.4.x
sync_PyrLKOpticalFlow->calc(src_grey, dst_grey, prev_pts_flow, cur_pts_flow, status, err); // OpenCV 3.x
dst_grey.copyTo(src_grey);
std::vector<bbox_t> result_bbox_vec;
if (err.rows == cur_bbox_vec.size() && status.rows == cur_bbox_vec.size())
{
for (size_t i = 0; i < cur_bbox_vec.size(); ++i)
{
cv::Point2f cur_key_pt = cur_pts_flow.at<cv::Point2f>(0, i);
cv::Point2f prev_key_pt = prev_pts_flow.at<cv::Point2f>(0, i);
float moved_x = cur_key_pt.x - prev_key_pt.x;
float moved_y = cur_key_pt.y - prev_key_pt.y;
if (abs(moved_x) < 100 && abs(moved_y) < 100 && good_bbox_vec_flags[i])
if (err.at<float>(0, i) < flow_error && status.at<unsigned char>(0, i) != 0 &&
((float)cur_bbox_vec[i].x + moved_x) > 0 && ((float)cur_bbox_vec[i].y + moved_y) > 0)
{
cur_bbox_vec[i].x += moved_x + 0.5;
cur_bbox_vec[i].y += moved_y + 0.5;
result_bbox_vec.push_back(cur_bbox_vec[i]);
}
else good_bbox_vec_flags[i] = false;
else good_bbox_vec_flags[i] = false;
//if(!check_error && !good_bbox_vec_flags[i]) result_bbox_vec.push_back(cur_bbox_vec[i]);
}
}
prev_pts_flow = cur_pts_flow.clone();
return result_bbox_vec;
}