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Adding a dedicated FPS tracker.

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This commit is contained in:
Tadas Baltrusaitis
2017-11-13 09:07:52 +00:00
parent bee6d185cb
commit fa48372f4c
8 changed files with 89 additions and 38 deletions
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33
lib/local/Utilities/src/VisualizationUtils.cpp
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@@ -44,6 +44,39 @@
namespace Utilities
{
FpsTracker::FpsTracker()
{
// Keep two seconds of history
history_length = 2;
}
void FpsTracker::AddFrame()
{
double current_time = cv::getTickCount() / cv::getTickFrequency();
frame_times.push(current_time);
DiscardOldFrames();
}
double FpsTracker::GetFPS()
{
DiscardOldFrames();
if (frame_times.size() == 0)
return 0;
double current_time = cv::getTickCount() / cv::getTickFrequency();
return ((double)frame_times.size()) / (current_time - frame_times.front());
}
void FpsTracker::DiscardOldFrames()
{
double current_time = cv::getTickCount() / cv::getTickFrequency();
// Remove old history
while (frame_times.size() > 0 && (current_time - frame_times.front()) > history_length)
frame_times.pop();
}
void DrawBox(cv::Mat image, cv::Vec6d pose, cv::Scalar color, int thickness, float fx, float fy, float cx, float cy)
{
auto edge_lines = CalculateBox(pose, fx, fy, cx, cy);