Related Experiment Video
Updated: Apr 8, 2026
06:53
Creating Virtual-hand and Virtual-face Illusions to Investigate Self-representation
Published on: March 1, 2017
14.0K
Evaluating Cutout Rendering Techniques for Pass-Through Embodiment Using a Real-Mirror Metaphor
IEEE Transactions on Visualization and Computer Graphics
|April 6, 2026
Summary
This study explores rendering techniques for virtual reality (VR) to improve Pass-Through Embodiment (PTE). A dithered edge rendering method significantly enhanced user embodiment and presence compared to hard masks.
Area of Science:
- Virtual Reality (VR) and Human-Computer Interaction (HCI)
- Computer Graphics and Rendering Techniques
- Perceptual Psychology in Immersive Environments
Background:
- A convincing sense of embodiment is vital for immersive virtual reality (VR) experiences.
- Pass-Through Embodiment (PTE) uses real body visualization in VR but faces segmentation artifacts from depth sensors.
- The perceptual impact of these artifacts on user embodiment and presence is not well understood.
Purpose of the Study:
- To investigate and compare edge-rendering techniques for reducing visual artifacts in PTE.
- To evaluate the perceptual impact of these techniques on user embodiment and presence in VR.
- To identify computationally efficient methods for enhancing PTE fidelity.
Main Methods:
- Comparison of three edge-rendering techniques: soft gradient, hard edge, and a novel dithered edge.
- A within-subjects study using a novel real-mirror paradigm for evaluating PTE.
- Measurement of user presence and embodiment as key performance indicators.
Main Results:
- The dithered edge rendering approach significantly outperformed hard edge masks in user studies.
- No significant difference in perceived embodiment was found between the dithered and soft gradient conditions.
- All tested rendering techniques, including dithered edges, supported high levels of presence and embodiment.
Conclusions:
- PTE is a robust method for enhancing embodiment and presence in virtual reality.
- Dithering presents a computationally efficient alternative to smooth blending for reducing visual artifacts in PTE.
- Gradient-based rendering, including dithering, effectively mitigates segmentation artifacts, improving the VR experience.
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