Fig. 6: Demonstration of the multifunction tactile system for objects recognition.

a photographs of six objects containing mask, banana, glass, orange, desk and leaf. b The actual online recognition by dragging the bioinspired sensor on the target object and then the recognition result showed on the screen. The blue arrow identified the direction of sliding. c Confusion matrix of above six objects recognition from the model trained by XGBoost. Predicted label refers to the recognized results, and true label refers to the true objects. The color bar represents the normalized accuracy.