Simon Voelker

schoolRWTH Aachen Universitybar_chart#813 Global Rank

Total Papers

HCI Rank

#813

Research Areas

Years Active

Recent Publications

User-Aware Rendering: Merging the Strengths of Device- and User-Perspective Rendering in Handheld AR

In handheld AR, users have only a small screen to see the augmented scene, making decisions about scene layout and rendering techniques crucial. Traditional device-perspective rendering (DPR) uses the device camera's full field of view, enabling fast scene exploration, but ignoring what the user sees around the device…

CHI '203rd AuthorAR Navigation & Context Awareness +1

Heatmaps, Shadows, Bubbles, Rays: Comparing Mid-Air Pen Position Visualizations in Handheld AR

In Handheld Augmented Reality, users look at AR scenes through the smartphone held in their hand. In this setting, having a mid-air pointing device like a pen in the other hand greatly expands the interaction possibilities. For example, it lets users create 3D sketches and models while on the go. However, perceptual i…

CHI '201st AuthorEye Tracking & Gaze Interaction +1

HeadReach: Using Head Tracking to Increase Reachability on Mobile Touch Devices

People often operate their smartphones with only one hand, using just their thumb for touch input. With today's larger smartphones, this leads to a reachability issue: Users can no longer comfortably touch everywhere on the screen without changing their grip. We investigate using the head tracking in modern smartphone…

CHI '201st AuthorEye Tracking & Gaze Interaction +1

GazeConduits: Calibration-Free Cross-Device Collaboration through Gaze and Touch

We present GazeConduits, a calibration-free ad-hoc mobile interaction concept that enables users to collaboratively interact with tablets, other users, and content in a cross-device setting using gaze and touch input. GazeConduits leverages recently introduced smartphone capabilities to detect facial features and esti…

CHI '19CorrespondingForce Feedback & Pseudo-Haptic Weight +1

ForceRay: Extending Thumb Reach via Force Input Stabilizes Device Grip for Mobile Touch Input

Smartphones are used predominantly one-handed, using the thumb for input. Many smartphones, however, have grown beyond 5". Users cannot tap everywhere on these screens without destabilizing their grip. ForceRay (FR) lets users aim at an out-of-reach target by applying a force touch at a comfortable thumb location, cas…

CHI '193rd AuthorShape-Changing Interfaces & Soft Robotic Materials +1

ARPen: Mid-Air Object Manipulation Techniques for a Bimanual AR System with Pen & Smartphone

Modeling in Augmented Reality (AR) lets users create and manipulate virtual objects in mid-air that are aligned to their real environment. We present ARPen, a bimanual input technique for AR modeling that combines a standard smartphone with a 3D-printed pen. Users sketch with the pen in mid-air, while holding their sm…

CHI '193rd AuthorHonorable MentionHaptic Wearables +1

Springlets: Expressive, Flexible and Silent On-Skin Tactile Interfaces

We introduce Springlets, expressive, non-vibrating mechanotactile interfaces on the skin. Embedded with shape memory alloy springs, we implement Springlets as thin and flexible stickers to be worn on various body locations, thanks to their silent operation even on the neck and head. We present a technically simple and…

CHI '183rd AuthorFull-Body Interaction & Embodied Input +1

Tangible Awareness: How Tangibles on Tabletops Influence Awareness of Each Other's Actions

Tangibles on multitouch tabletops increase speed, accuracy, and eyes-free operability for individual users, and verbal and behavioral social interaction among multiple users around smaller tables with a shared focus of attention. Modern multitouch tables, however, provide sizes and resolutions that let groups work al…

CHI '182nd AuthorHonorable MentionForce Feedback & Pseudo-Haptic Weight

Use the Force Picker, Luke: Space-Efficient Value Input on Force-Sensitive Mobile Touchscreens

Picking values from long ordered lists, such as when setting a date or time, is a common task on smartphones. However, the system pickers and tables used for this require significant screen space for spinning and dragging, covering other information or pushing it off-screen. The Force Picker reduces this footprint by…

CHI '182nd AuthorShape-Changing Interfaces & Soft Robotic Materials +1

Sketch&Stitch: Interactive Embroidery for E-textiles

E-Textiles are fabrics that integrate electronic circuits and components. Makers use them to create interactive clothing, furniture, and toys. However, this requires significant manual labor and skills, and using technology-centric design tools. We introduce Sketch&Stitch, an interactive embroidery system to create e-…

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