Gesture Recognition Inside a Car Using IR-UWB Radar Professor Sung Ho Cho Communication & Signal Processing Lab Hanyang University Email: dragon@Hanyang.ac.kr

OUTLINE Problem Statement System Block Diagram Features Extraction Gestures Training Gestures Classification Results & Discussion

Current Solutions for Gesture Recognition Problem Statement Current Solutions for Gesture Recognition Vision based gesture recognition Glove Based Solution Main Issues Privacy Issues (Camera Based) Environmental factors that cause vision interference like light, fog, and smoke Inconvenience (Glove based) IR UWB Based Gesture Recognition No privacy Issue Higher range resolution, low power consumption Performance not effected by darkness

Novelda NVA6201 Specifications Experimental Setup Novelda NVA6201 Specifications Parameter Value PRF 100 MHz Centre Frequency 6.8 GHz Bandwidth 2.3 GHz Output Power -53 dBm/MHz

Process Block Diagram

Signal Pre-Processing Clutter Removal Averaging of the signal & Separation of human body from human hand Detect the peaks above the threshold Chose the Nearest peak to Radar

Gestures Defined on basis of features The Variance of Displacement of nearest point above threshold Variance of magnitude Surface Area of the hand Gesture Notation Description G1 When hand moves back and forth while palm is open G2 When hand palm is open and fixed G3 Hand fingers are closed and stationary G4 Similar to G2 but palm facing radar sidewise G5 The fingers are opened and closed continuously while hand position is fixed G6 The palm is facing the ground and hand is stationary

Gesture Training No. of Gestures

Extracted Feature’s Mean Values

Decision Tree

Results Gesture Result of Recognition Number of Trial Number of Correct Accuracy G1 150 100% G2 131 87.33% G3 125 83.33% G4 134 89.34% G5 G6 127 84.67%

Discussion Achievements Future Work Developed and performed the algorithm in Lab environment Tested it in a Stationary Car Future Work Gesture Recognition inside a moving Car Motion Compensation of Radar Motion Compensation of Body

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