the running time for solvepnp

[EightImmortals]

Hi:
thank you so much for the code, I have implemented it and the it works, the pose estimation result is fine. However, the runing time for the function "solvePnP" is so big, it seems about 1-second for only running this function. I just used 14 landmarks to estimate the pose(the landmarks are not obtained from Dlib, they are from some other processing output.). Have you ever met this problem or not? I use opencv3.3, and the include files for the source cpp files are:
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/calib3d/calib3d.hpp>"

if the running time for the solvepnp is so big, the real-time processing is impossible.

Thank you so much.

[EightImmortals]

I use ubuntu16.04 and the cpu infomation is :
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 85
model name : Intel(R) Xeon(R) Silver 4110 CPU @ 2.10GHz
stepping : 4
microcode : 0x200002b
cpu MHz : 2100.000
cache size : 11264 KB
physical id : 0
siblings : 16
core id : 0
cpu cores : 8
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes

[lincolnhard]

It's very weird that your solvePnP() running so slow.
I have tested on Quad-core ARM® Cortex® A53 with 1.2 GHz per core, and the result is 1.5ms.
Do you build your opencv lib in release mode?
My test is like below:

double time_begin = cv::getTickCount();
cv::solvePnP(object_pts, image_pts, cam_matrix, dist_coeffs, rotation_vec, translation_vec);
double fee_time = (cv::getTickCount() - time_begin) / cv::getTickFrequency() * 1000;
std::cout << "forward fee: " << fee_time << "ms" << std::endl;