- B. Raj, Kaustubh Kalgaonkar, Chris Harrison, P. Dietz. 2012. Properties and Applications of Ultrasonic Doppler Sensing in Human-Computer Interaction. Abstract: an overview of our work on ultrasonic Doppler sensing. This is a technique that captures data on the relative velocities of objects in the field of detection. We draw upon our experiences using the tech- nology to characterize several unique properties that significantly differentiate it from other sensing tech- niques, and we believe merit attention from the HCI community. These include high frame rate, low com- putational overhead, instantaneous velocity readings (instead of e.g., frame differencing), and some degree of range independence. Additionally, because it is not vision-based, the technique may sidestep privacy concerns found in many camera-driven approaches, potentially opening the door to sensing in once taboo locations, such as homes, restrooms, hospitals, and schools.
