Chungman Lim

schoolGwangju Institute of Science and Technologybar_chart#1688 Global Rank

Total Papers

HCI Rank

#1688

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 '252nd AuthorVisual 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 '251st AuthorVibrotactile 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 '241st 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 '231st AuthorVibrotactile 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 '233rd AuthorVibrotactile 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…

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