The gesture recognition result from GestureRecognizer, where each vector element represents a single hand detected in the image.

gestures Recognized hand gestures of detected hands. Note that the index of the gesture is always -1, because the raw indices from multiple gesture classifiers cannot consolidate to a meaningful index.
handedness Classification of handedness.
hand_landmarks Detected hand landmarks in normalized image coordinates.
hand_world_landmarks Detected hand landmarks in world coordinates.