3D Forensic Reconstruction Assisted by a Forensic NPC: Pedestrian Accident Prototype in Unity with Conversational AI
Resumo
This paper presents an interactive 3D prototype for the forensic reconstruction of a real vehicle-pedestrian collision. This technique made it possible to position the 3D model in close visual correspondence with the anatomical coordinates described in the forensic report,so that the visual points of contact were aligned with the areas of interest reported by the forensic expert. The core innovation is the integration of a ’Medical Examiner NPC’, a conversational Artificial Intelligence (AI) developed via the ConvAI platform, that acts as a tutor. The agent prompts the user to correlate bodily traumas with the corresponding vehicle damage. The results validate this proof of concept as demonstrative evidence, highlighting its high pedagogical and immersive potential for forensic medicine education.
Referências
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Carew, R. M., French, J., and Morgan, R. M. (2021). 3d forensic science: A new field integrating 3d imaging and 3d printing in crime reconstruction. Forensic Science International: Synergy, 3:100205.
Chango, X., Flor-Unda, O., Gil-Jiménez, P., and Gómez-Moreno, H. (2024). Technology in forensic sciences: Innovation and precision. Technologies, 12(8):120.
Chen, Y., Zhang, Q., and Yu, F. (2025). Transforming traffic accident investigations: a virtual-real-fusion framework for intelligent 3d traffic accident reconstruction. Complex & Intelligent Systems, 11(1):76.
Koller, S., Ebert, L. C., Martinez, R. M., and Sieberth, T. (2019). Using virtual reality for forensic examinations of injuries. Forensic science international, 295:30–35.
Korkiakoski, M., Sheikhi, S., Nyman, J., Saariniemi, J., Tapio, K., and Kostakos, P. (2025). An empirical evaluation of ai-powered non-player characters’ perceived realism and performance in virtual reality environments. arXiv preprint arXiv:2507.10469.
Krafft, A., Sleem, L., Francois, J., Bianco, C., and State, R. (2025). Ptvr: Leveraging llms for prompt-to-vr forensic scene generation. In 2025 Computing, Communications and IoT Applications (ComComAp), pages 266–273. IEEE.
Ma, M., Zheng, H., and Lallie, H. (2010). Virtual reality and 3d animation in forensic visualization. Journal of forensic sciences, 55(5):1227–1231.
Maksymowicz, K., Kuzan, A., and Tunikowski, W. (2024). 3d reconstruction of events: Search for a spatial correlation between injuries and the geometry of the body discovery site. Forensic Science International, 357:111970.
Maneli, M. A. and Isafiade, O. E. (2022). 3d forensic crime scene reconstruction involving immersive technology: A systematic literature review. IEEE Access, 10:88821–88857.
Niu, S., Zhang, J., Lin, J., Wang, B., and Yan, J. (2025). Enhancing anatomy education with virtual reality: integrating three-dimensional models for improved learning efficiency and student satisfaction. Frontiers in Medicine, 12:1555053.
Pulgar Haro, H. D., Mora Arévalo, K. J., Morales Pérez, M. , and Tacle Reascos, M. G. (2024). Reconstrucción virtual como técnica de recreación de prototipos en evaluaciones de escenas del crimen: Una revisión bibliográfica. Salud, Ciencia y Tecnología, 4:160–169.
Thali, M. J., Braun, M., Buck, U., Aghayev, E., Jackowski, C., Vock, P., Sonnenschein, M., and Dirnhofer, R. (2005). Virtopsy—scientific documentation, reconstruction and animation in forensic: individual and real 3d data based geo-metric approach including optical body/object surface and radiological ct/mri scanning. Journal of Forensic and Sciences, 50(2):JFS2004290–15.
Villa, C., Lynnerup, N., and Jacobsen, C. (2023). A virtual, 3d multimodal approach to victim and crime scene reconstruction. Diagnostics, 13(17):2764.
Zhu, C., Sam, C. H., Wu, Y., and Tang, Y. (2025). Wip: Enhancing game-based learning with ai-driven peer agents. In 2025 IEEE Frontiers in Education Conference (FIE), pages 1–5. IEEE.
Baier, W., Warnett, J. M., Payne, M., and Williams, M. A. (2018). Introducing 3d printed models as demonstrative evidence at criminal trials. Journal of forensic sciences, 63(4):1298–1302.
Buldu, K. B., Özdel, S., Lau, K. H. C., Wang, M., Saad, D., Schönborn, S., Boch, A., Kasneci, E., and Bozkir, E. (2025). Cuify the xr: An open-source package to embed llm-powered conversational agents in xr. In 2025 IEEE International Conference on Artificial Intelligence and eXtended and Virtual Reality (AIxVR), pages 192–197. IEEE.
Carew, R. M., French, J., and Morgan, R. M. (2021). 3d forensic science: A new field integrating 3d imaging and 3d printing in crime reconstruction. Forensic Science International: Synergy, 3:100205.
Chango, X., Flor-Unda, O., Gil-Jiménez, P., and Gómez-Moreno, H. (2024). Technology in forensic sciences: Innovation and precision. Technologies, 12(8):120.
Chen, Y., Zhang, Q., and Yu, F. (2025). Transforming traffic accident investigations: a virtual-real-fusion framework for intelligent 3d traffic accident reconstruction. Complex & Intelligent Systems, 11(1):76.
Koller, S., Ebert, L. C., Martinez, R. M., and Sieberth, T. (2019). Using virtual reality for forensic examinations of injuries. Forensic science international, 295:30–35.
Korkiakoski, M., Sheikhi, S., Nyman, J., Saariniemi, J., Tapio, K., and Kostakos, P. (2025). An empirical evaluation of ai-powered non-player characters’ perceived realism and performance in virtual reality environments. arXiv preprint arXiv:2507.10469.
Krafft, A., Sleem, L., Francois, J., Bianco, C., and State, R. (2025). Ptvr: Leveraging llms for prompt-to-vr forensic scene generation. In 2025 Computing, Communications and IoT Applications (ComComAp), pages 266–273. IEEE.
Ma, M., Zheng, H., and Lallie, H. (2010). Virtual reality and 3d animation in forensic visualization. Journal of forensic sciences, 55(5):1227–1231.
Maksymowicz, K., Kuzan, A., and Tunikowski, W. (2024). 3d reconstruction of events: Search for a spatial correlation between injuries and the geometry of the body discovery site. Forensic Science International, 357:111970.
Maneli, M. A. and Isafiade, O. E. (2022). 3d forensic crime scene reconstruction involving immersive technology: A systematic literature review. IEEE Access, 10:88821–88857.
Niu, S., Zhang, J., Lin, J., Wang, B., and Yan, J. (2025). Enhancing anatomy education with virtual reality: integrating three-dimensional models for improved learning efficiency and student satisfaction. Frontiers in Medicine, 12:1555053.
Pulgar Haro, H. D., Mora Arévalo, K. J., Morales Pérez, M. , and Tacle Reascos, M. G. (2024). Reconstrucción virtual como técnica de recreación de prototipos en evaluaciones de escenas del crimen: Una revisión bibliográfica. Salud, Ciencia y Tecnología, 4:160–169.
Thali, M. J., Braun, M., Buck, U., Aghayev, E., Jackowski, C., Vock, P., Sonnenschein, M., and Dirnhofer, R. (2005). Virtopsy—scientific documentation, reconstruction and animation in forensic: individual and real 3d data based geo-metric approach including optical body/object surface and radiological ct/mri scanning. Journal of Forensic and Sciences, 50(2):JFS2004290–15.
Villa, C., Lynnerup, N., and Jacobsen, C. (2023). A virtual, 3d multimodal approach to victim and crime scene reconstruction. Diagnostics, 13(17):2764.
Zhu, C., Sam, C. H., Wu, Y., and Tang, Y. (2025). Wip: Enhancing game-based learning with ai-driven peer agents. In 2025 IEEE Frontiers in Education Conference (FIE), pages 1–5. IEEE.
Publicado
23/09/2026
Como Citar
OLIVEIRA, Rayelen de Jesus; IVO, Juliana Sampaio Silva; G., Thirzá Larissa A. de Menezes; SILVA, Igor Libertador; NUNES, Tâmara Luiza G. M.; NUNES, Tássia Luiza G. M.; ARAUJO, Victor Flávio de Andrade.
3D Forensic Reconstruction Assisted by a Forensic NPC: Pedestrian Accident Prototype in Unity with Conversational AI. In: ESCOLA REGIONAL DE COMPUTAÇÃO BAHIA, ALAGOAS E SERGIPE (ERBASE), 26. , 2026, Maragogi/AL.
Anais [...].
Porto Alegre: Sociedade Brasileira de Computação,
2026
.
p. 131-140.
DOI: https://doi.org/10.5753/erbase.2026.30384.
