Fig. 5From: Machine-learning-based children’s pathological gait classification with low-cost gait-recognition systema The three-layer structure of the piezoresistive sensor. b Piezoresistive sensor pressure–resistor characteristic curve. Horizontal axis represents the pressure loaded on the sensor and vertical axis is the resistor of sensor. c Sensor calibration. Same color points represent a certain sensor block output during calibration and regression straight line with the same color is its result. A total of 64 sensor block calibration results are shownBack to article page