Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{189793,
        author = {Dixita Pravin Tandel and Anita Gaikwad},
        title = {3d Holographic Assistant Using Unity3d And AI},
        journal = {International Journal of Innovative Research in Technology},
        year = {2026},
        volume = {12},
        number = {8},
        pages = {558-561},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=189793},
        abstract = {Human-computer interaction is rapidly transitioning from flat graphical interfaces to immersive and intelligent systems capable of communicating more naturally with users. Traditional voice assistants such as Alexa, Siri, and Google Assistant provide functional audio interaction but lack a compelling visual presence that supports social and emotional engagement. To bridge this gap, this research introduces a real-time 3D holographic voice assistant, developed using Unity 3D and artificial intelligence–based speech processing techniques. The proposed system features a virtual animated character that performs lip-sync, facial expressions, and gesture animations synchronized with system-generated speech.
Voice commands are captured through a speech recognition module and processed by a natural language understanding framework to derive intent and produce contextual responses. These responses are converted to synthetic speech using Text-to-Speech and simultaneously drive avatar animations in Unity. The rendered output is configured into a four-view mirrored layout, which, when projected via a transparent Pepper’s Ghost holographic pyramid, creates the illusion of a floating three-dimensional virtual assistant visible from multiple angles.
The prototype is designed to be cost-effective, portable, and deployable on standard mobile or tablet devices, making holographic interaction accessible without requiring AR/VR headsets. Performance evaluation showed low-latency processing, clear projection visibility, and accurate conversational response generation, enabling smooth two-way interaction. User experience observations indicate that the holographic display significantly enhances engagement, attention retention, and perceived intelligence compared to conventional voice-only assistants.
This research demonstrates how the combination of speech technology, 3D animation, and holographic projection can transform AI assistants into emotionally expressive, visually dynamic, and human-centered communication tools. The system has strong potential for applications in education, customer service, virtual receptionists, healthcare guidance, interactive kiosks, and smart environments. Future extensions include emotional speech response modeling, multilingual support, gesture-based input, and improved realism through character motion-capture and AR-integrated projection.},
        keywords = {3D Hologram, Voice Assistant, Pepper’s Ghost, Unity3D, AI-Driven Interaction, Speech Recognition, NLP, Immersive Interfaces},
        month = {January},
        }