The processing speed is too slow and needs to be improved

[008v]

0.028020143508911133 <-- load image
0.5316257476806641 <-- edge detection
0.0003399848937988281 <-- choose points
0.13251304626464844 <-- triangulation
0.03511810302734375 <-- draw image
0.72782301902771 <-- TOTAL