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hand model

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@ -91,7 +91,7 @@ To detect initial hand locations, we designed a
mobile real-time uses in a manner similar to the face detection model in
[MediaPipe Face Mesh](./face_mesh.md). Detecting hands is a decidedly complex
task: our
[model](https://github.com/google/mediapipe/tree/master/mediapipe/models/palm_detection.tflite) has
[model](https://github.com/google/mediapipe/blob/master/mediapipe/modules/palm_detection/palm_detection.tflite) has
to work across a variety of hand sizes with a large scale span (~20x) relative
to the image frame and be able to detect occluded and self-occluded hands.
Whereas faces have high contrast patterns, e.g., in the eye and mouth region,
@ -119,7 +119,7 @@ just 86.22%.
### Hand Landmark Model
After the palm detection over the whole image our subsequent hand landmark
[model](https://github.com/google/mediapipe/tree/master/mediapipe/models/hand_landmark.tflite)
[model](https://github.com/google/mediapipe/blob/master/mediapipe/modules/hand_landmark/hand_landmark.tflite)
performs precise keypoint localization of 21 3D hand-knuckle coordinates inside
the detected hand regions via regression, that is direct coordinate prediction.
The model learns a consistent internal hand pose representation and is robust