Sunjun Kim

schoolAalto Universitybar_chart#1643 Global Rank

Total Papers

HCI Rank

#1643

Research Areas

Years Active

Recent Publications

AutoGain: Gain Function Adaptation with Submovement Efficiency Optimization

A well-designed control-to-display gain function can improve pointing performance with indirect pointing devices like trackpads. However, the design of gain functions is challenging and mostly based on trial and error. AutoGain is a novel method to individualize a gain function for indirect pointing devices in context…

CHI '202nd AuthorForce Feedback & Pseudo-Haptic Weight +1

Button Simulation and Design via FDVV Models

Designing a push-button with desired sensation and performance is challenging because the mechanical construction must have the right response characteristics. Physical simulation of a button's force-displacement (FD) response has been studied to facilitate prototyping; however, the simulations' scope and realism have…

CHI '192nd AuthorGame UX & Player Behavior +1

Geometrically Compensating Effect of End-to-End Latency in Moving-Target Selection Games

Effects of unintended latency on gamer performance have been reported. End-to-end latency can be corrected by post-input manipulation of activation times, but this gives the player unnatural gameplay experience. For moving-target selection games such as Flappy Bird, the paper presents a predictive model of latency on…

CHI '181st AuthorForce Feedback & Pseudo-Haptic Weight

Impact Activation Improves Rapid Button Pressing

The activation point of a button is defined as the depth at which it invokes a make signal. Regular buttons are activated during the downward stroke, which occurs within the first 20 ms of a press. The remaining portion, which can be as long as 80~ms, has not been examined for button activation for reason of mech…

CHI '182nd AuthorGame UX & Player Behavior +1

Moving Target Selection: A Cue Integration Model

This paper investigates a common task requiring temporal precision: the selection of a rapidly moving target on display by invoking an input event when it is within some selection window. Previous work has explored the relationship between accuracy and precision in this task, but the role of visual cues available to u…

CHI '182nd AuthorHonorable MentionVibrotactile Feedback & Skin Stimulation +1

Neuromechanics of a Button Press

To press a button, a finger must push down and pull up with the right force and timing. How the motor system succeeds in button-pressing, in spite of neural noise and lacking direct access to the mechanism of the button, is poorly understood. This paper investigates a unifying account based on neuromechanics. Mechanic…

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