Do you have mediapipe_hand_landmark_cpp ?

[pntt3011]

HI @lexidliny, i have a separate branch for it. https://github.com/pntt3011/mediapipe_face_iris_cpp/tree/HandLandmark. Hope this help.

[lexidliny]

Thank you ! I have tested this code on my computer and I get "Segmentation fault (core dumped)". How do I fix this fault? The face_landmark_cpp program works well on my computer with ubuntu 18.04.

[pntt3011]

Can you show your detailed error? I tested on my computer and it ran normally. Did you compile Debug or Release mode? If you compile with Debug mode, try again with Release mode.

[lexidliny]

I have tried again, and I located this error in the my::DetectionPostProcess::getHighestScoreDetection function.

[pntt3011]

@lexidliny, did you change the define values in DetectionPostProcess.hpp? They are different from those of Face landmark model.

[lexidliny]

I found that I forgot to modfy the path to anchors.csv. Now it works well. Thank you !

[lexidliny]

It seems that the accuracy is not as good as mediapipe. Is it caused by palm_detection_without_custom_layer.tflite ?

[lexidliny]

It seems that the accuracy is not as good as mediapipe. Is it caused by palm_detection_without_custom_layer.tflite ?

[lexidliny]

[pntt3011]

@lexidliny, if i remember correctly, the landmark model works best with straight up hand. Therefore, from the detection model, you should:

• Retrieve the 5 (or 6?) main landmarks
• Calculate the rotate angle from the straight up direction
• Rotate the hand bounding box the opposite of that angle
• Crop the bounding box Then you can feed it to the landmark model.

[pntt3011]

You can get the straight up direction from palm and middle finger landmark (2 of the output landmarks from detection model)