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Outputs (39)

Large-Scale Multi-Character Interaction Synthesis (2025)
Presentation / Conference Contribution
Chang, Z., Wang, H., Koulieris, G. A., & Shum, H. P. (2025, August). Large-Scale Multi-Character Interaction Synthesis. Presented at ACM SIGGRAPH 2025, Vancouver, Canada

Generating large-scale multi-character interactions is a challenging and important task in character animation. Multi-character interactions involve not only natural interactive motions but also characters coordinated with each other for transition.... Read More about Large-Scale Multi-Character Interaction Synthesis.

On the Design Fundamentals of Diffusion Models: A Survey (2025)
Journal Article
Chang, Z., Koulieris, G. A., Chang, H. J., & Shum, H. P. H. (2026). On the Design Fundamentals of Diffusion Models: A Survey. Pattern Recognition, 169, Article 111934. https://doi.org/10.1016/j.patcog.2025.111934

Diffusion models are learning pattern-learning systems to model and sample from data distributions with three functional components namely the forward process, the reverse process, and the sampling process. The components of diffusion models have gai... Read More about On the Design Fundamentals of Diffusion Models: A Survey.

Fitting Room: Lung Transplantation Donor-Recipient Size-matching in Virtual Reality (2024)
Presentation / Conference Contribution
Sibrina, D., Novysedlak, R., Kolarik, J., Lischke, R., & Koulieris, G. A. (2024, July). Fitting Room: Lung Transplantation Donor-Recipient Size-matching in Virtual Reality. Poster presented at SIGGRAPH '24: Special Interest Group on Computer Graphics and Interactive Techniques Conference, Denver CO USA

OrthopedVR: clinical assessment and pre-operative planning of paediatric patients with lower limb rotational abnormalities in virtual reality (2023)
Journal Article
Sibrina, D., Bethapudi, S., & Koulieris, G. A. (online). OrthopedVR: clinical assessment and pre-operative planning of paediatric patients with lower limb rotational abnormalities in virtual reality. Visual Computer, 39, 3621–3633. https://doi.org/10.1007/s00371-023-02949-0

Rotational abnormalities in the lower limbs causing patellar mal-tracking negatively affect patients’ lives, particularly young patients (10–17 years old). Recent studies suggest that rotational abnormalities can increase degenerative effects on the... Read More about OrthopedVR: clinical assessment and pre-operative planning of paediatric patients with lower limb rotational abnormalities in virtual reality.

A Virtual Reality System for the Assessment of Patients with Lower Limb Rotational Abnormalities (2023)
Presentation / Conference Contribution
Sibrina, D., Bethapudi, S., & Koulieris, G. A. (2023, March). A Virtual Reality System for the Assessment of Patients with Lower Limb Rotational Abnormalities. Presented at 2023 IEEE Conference on Virtual Reality and 3D User Interfaces Abstracts and Workshops (VRW), Shanghai, China

Rotational lower limb abnormalities cause patellar mal-tracking which impacts young patients. Repetitive patellar dislocation may require knee arthroplasty. Surgeons employ CT to identify rotational abnormalities and make surgical decisions. Recent s... Read More about A Virtual Reality System for the Assessment of Patients with Lower Limb Rotational Abnormalities.

Effect of manipulating the vergence/accommodation and image size mismatches of the ±2D flipper test on the frequency and precision of accommodative facility (2023)
Journal Article
Vera, J., Redondo, B., Martínez‐Tovar, J. M., Molina, R., Koulieris, G. A., Allen, P. M., & Jiménez, R. (2023). Effect of manipulating the vergence/accommodation and image size mismatches of the ±2D flipper test on the frequency and precision of accommodative facility. Ophthalmic and Physiological Optics, 43(4), 660-667. https://doi.org/10.1111/opo.13136

Purpose
The ±2.00 D accommodative facility test presents several limitations, including the lack of objective information and inherent characteristics such as vergence/accommodative conflict, change in apparent size of the image, subjective criteria... Read More about Effect of manipulating the vergence/accommodation and image size mismatches of the ±2D flipper test on the frequency and precision of accommodative facility.

RHapTor: Rendering Haptic Torques for Virtual Reality (2022)
Presentation / Conference Contribution
Roice, K., & Koulieris, G. A. (2022, August). RHapTor: Rendering Haptic Torques for Virtual Reality. Presented at SIGGRAPH '22: Special Interest Group on Computer Graphics and Interactive Techniques Conference, Vancouver, Canada

The Statistics of Eye Movements and Binocular Disparities during VR Gaming: Implications for Headset Design (2022)
Journal Article
Aizenman, A., Koulieris, G.-A., Gibaldi, A., Sehgal, V., Levi, D., & Banks, M. S. (2023). The Statistics of Eye Movements and Binocular Disparities during VR Gaming: Implications for Headset Design. ACM Transactions on Graphics, 42(1), Article 7. https://doi.org/10.1145/3549529

The human visual system evolved in environments with statistical regularities. Binocular vision is adapted to these such that depth perception and eye movements are more precise, faster, and performed comfortably in environments consistent with the r... Read More about The Statistics of Eye Movements and Binocular Disparities during VR Gaming: Implications for Headset Design.