_hand_angle _hand_angle_estimation _hand_angle_prediction _hand_bounding_box _hand_center _hand_center_estimation _hand_center_prediction _hand_contour _hand_convexity_defects _hand_finger_line_origin _hand_fingertips _hand_found _hand_gesture _hand_hull _hand_num_fingers _hand_ROI _hand_rotated_bounding_box _max_circle_incribed_center _max_circle_inscribed_radius _min_enclosing_circle_center _min_enclosing_circle_radius angleControl angleExtraction boundingBoxExtraction centerExtraction contourExtraction defectsExtraction fingerExtraction gestureExtraction getBoundingBox getCenterHand getCenterHandEstimated getCenterHandPredicted getContours getGesture getHandAngle getHandAngleEstimated getHandAnglePredicted getNumFingers HandDescriptor handFound handPalmExtraction kalmanFilterAngle kalmanFilterCenter operator() plotBoundingRectangle plotCenter plotComplexHull plotContours plotConvexityDefects plotFingertips plotHandInterface plotMaxInscribedCircle plotMinEnclosingCircle ROIExtraction update

void HandDescriptor::gestureExtraction ( ) [private] Guesses the hand gesture using the hand characteristic data previouly found. { const float closed_hand_threshold = 2; //-- Ratio between the outer circle and the inner circle if ( _hand_found) { //-- Open palm if (_hand_num_fingers == 5 || _hand_num_fingers == 4 ) { _hand_gesture = GECKO_GESTURE_OPEN_PALM; } //-- 2-finger signs else if ( _hand_num_fingers == 2 ) { //-- Find angle between fingers: float angle_between_fingers = findAngle( _hand_fingertips[0], _hand_fingertips[1], _max_circle_incribed_center); //-- Victory sign if ( angle_between_fingers < 60 ) _hand_gesture = GECKO_GESTURE_VICTORY; //- Gun sign else if ( angle_between_fingers < 90 ) _hand_gesture = GECKO_GESTURE_GUN; } //-- Closed hand else if (_hand_num_fingers == 0) { if ( _min_enclosing_circle_radius / _max_circle_inscribed_radius < closed_hand_threshold ) _hand_gesture = GECKO_GESTURE_CLOSED_FIST; else _hand_gesture = GECKO_GESTURE_NONE; } else { _hand_gesture = GECKO_GESTURE_NONE; } std::cout << "[Debug] Gesture: "; switch ( _hand_gesture ) { case GECKO_GESTURE_OPEN_PALM: std::cout << "Open Palm"; break; case GECKO_GESTURE_VICTORY: std::cout << "Victory sign"; break; case GECKO_GESTURE_GUN: std::cout << "Gun sign"; break; case GECKO_GESTURE_CLOSED_FIST: std::cout << "Closed hand"; break; default: std::cout << "No sign"; } std::cout << std::endl; } }