Gunhyuk Park

schoolGwangju Institute of Science and Technologybar_chart#1108 Global Rank

Total Papers

HCI Rank

#1108

Research Areas

Years Active

Recent Publications

I-VAMOS: Independent Voting with Accessible Multimodal Offline System for Visually Impaired Users

Independent and secret voting is a constitutional right, yet blind and low-vision voters (BLVs) continue to face barriers when casting their votes. Existing methods such as tactile templates often require braille literacy or assistance, while electronic ballot-marking devices raise cost and security concerns. We prese…

CHI '25CorrespondingVisual Impairment Technologies (Screen Readers, Tactile Graphics, Braille) +3

I-Scratch: Independent Slide Creation With Auditory Comment and Haptic Interface for the Blind and Visually Impaired

Presentation software still holds barriers to independent creation for blind and visually impaired users (BVIs) due to its visual-centric interface. To address this gap, we introduce I-Scratch, a multimodal system which empowers BVIs to independently create, explore, and edit PowerPoint slides. We initially designed I…

CHI '25CorrespondingVibrotactile Feedback & Skin Stimulation +1

ChatHAP: A Chat-Based Haptic System for Designing Vibrations through Conversation

In contrast to design tools for graphics and audio generation from text prompts, haptic design tools lag behind due to challenges in constructing large-scale, high-quality datasets including vibrations and text descriptions. To address this gap, we propose ChatHAP, a conversational haptic system for designing vibratio…

CHI '242nd AuthorMid-Air Haptics (Ultrasonic)

Designing Distinguishable Mid-Air Ultrasound Tactons with Temporal Parameters

Mid-air ultrasound technology offers new design opportunities for contactless tactile patterns (i.e., Tactons) in user applications. Yet, few guidelines exist for making ultrasound Tactons easy to distinguish for users. In this paper, we investigated the distinguishability of temporal parameters of ultrasound Tactons…

CHI '23CorrespondingVibrotactile Feedback & Skin Stimulation +1

Can a Computer Tell Differences between Vibrations?: Physiology-Based Computational Model for Perceptual Dissimilarity Prediction

Perceptual dissimilarities, requiring high-cost user ratings, have contributed to designing well-distinguishable vibrations for associated meaning delivery. Appropriate metrics can reduce the cost, but known metrics in vibration similarity/dissimilarity could not predict them robustly. We propose a physiology-based mo…

CHI '23CorrespondingVibrotactile Feedback & Skin Stimulation +1

Can we crowdsource Tacton similarity perception and metaphor ratings?

High-fidelity vibration actuators in recent mobile phones allow designers to crowdsource user evaluation of vibrotactile (VT) Tactons. Yet, little work has examined whether online crowdsourcing platforms can provide comparable results to lab studies. To address this question, we conducted two studies with iOS devices…

CHI '195th+ AuthorForce Feedback & Pseudo-Haptic Weight +1

Haptipedia: Accelerating Haptic Device Discovery to Support Interaction & Engineering Design

Creating haptic experiences often entails inventing, modifying, or selecting specialized hardware. However, interaction designers are rarely engineers, and 30 years of haptic inventions are buried in a fragmented literature that describes devices mechanically rather than by potential purpose. We conceived of Haptipedi…

CHI '181st AuthorVibrotactile Feedback & Skin Stimulation +1

Tactile Information Transmission by 2D Stationary Phantom Sensations

A phantom sensation refers to an illusory tactile sensation perceived midway between multiple distant stimulations on the skin. Phantom sensations have been used intensively in tactile interfaces owing to their simplicity and effectiveness. Despite that, the perceptual performance of phantom sensations is not complete…

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