PeopleofSuperintelligence

Researcher

Dimitrios Tzionas

Also known as Dimitris Tzionas, D. Tzionas

Dimitrios Tzionas is a computer vision researcher whose AI work models people, movement and interaction with objects. He studied electrical and computer engineering at Aristotle University of Thessaloniki, completed a PhD on hand-object interaction at Bonn, and developed 3D hand and body models at the Max Planck Institute for Intelligent Systems. At the University of Amsterdam, he led research on 3D virtual humans and coauthored InteractVLM, which estimates 3D contact points on people and objects from images. Since June 2026, he is an assistant professor at Aristotle University of Thessaloniki and leads the 3Dim Intelligence team.

Works
50
Citations
6,408
h-index
25
Badges

Publication numbers from OpenAlex, as of 22 October 2026.

Timeline

  1. 2002–2009

    Electrical engineering at Aristotle

    He studies Electrical and Computer Engineering at Aristotle University of Thessaloniki from 2002 to 2009 and earns an engineering diploma there.

  2. May 2012–August 2016

    A PhD at Bonn

    At the University of Bonn, he completes a PhD in 2016 with a thesis on capturing hand-object interaction and reconstructing manipulated objects from RGB-D input, advised by Juergen Gall.

  3. October 2016–October 2018

    Embodied Hands at MPI-IS

    At the Perceiving Systems department of MPI-IS, he works on 3D hand modeling, whole-body modeling and 4D scan registration, and hand-object reconstruction. In 2017, he coauthors Embodied Hands, a model of hands and bodies interacting together.

  4. October 2018–May 2022

    Research Scientist at MPI-IS

    He co-advises PhD students and co-leads part of the Perceiving Systems department's research agenda at the Max Planck Institute for Intelligent Systems.

  5. June 2022–June 2026

    Assistant Professor at UvA

    In June 2022, he joins the University of Amsterdam's Computer Vision group as a tenured assistant professor and starts a research direction on 3D virtual humans. He teaches the bachelor's Introduction to Computer Vision course for AI students.

  6. January 2025

    An ELLIS Scholar

    He becomes an ELLIS Scholar in the ELLIS Unit Amsterdam in January 2025.

  7. 2025

    3D contact estimates with InteractVLM

    In 2025, he coauthors InteractVLM, which estimates 3D contact points on human bodies and objects from single in-the-wild images and supports their joint reconstruction.

  8. Since June 2026

    Assistant Professor at AUTh

    Since June 2026, he is an assistant professor in the Electrical and Computer Engineering department at Aristotle University of Thessaloniki and leads 3Dim Intelligence, a team working on 3D/4D human perception and synthesis. In 2026, he coauthors RHINO, a framework that reconstructs a person, a manipulated object and a scene from monocular video.

Career

  1. Since 2026Aristotle University of ThessalonikiAssistant Professor
  2. 2022–2026University of AmsterdamAssistant Professor
  3. 2016–2022Max Planck Institute for Intelligent SystemsResearch Scientist

Education

  1. 2016University of BonnPhD
  2. 2009Aristotle University of ThessalonikiEngineering diploma

From the biography and OpenAlex affiliations (the years of papers that list the organization), so some years are approximate.

  1. More people shaping AI studied at Massachusetts Institute of Technology than at any other institutionIncludes Aristotle University of Thessaloniki. We estimate where the people shaping AI studied and where their careers led. Massachusetts Institute of Technology leads with 467 former students, including 291 recorded doctorates.
  2. The company share of AI researchers’ top papers was 31% in 2020–2024 and 8% in 1970–1974Includes Aristotle University of Thessaloniki. We estimate where the people shaping AI worked when their most-cited papers appeared: the company share was 31% in 2020–2024 and 8% in 1970–1974, and Google led all organizations in 2020–2024.
  3. Google has the highest combined h-index among AI organizationsIncludes Max Planck Society. We estimate that Google holds the highest combined h-index at 8,016, while universities account for 73% of the deduplicated total across AI organizations.
  4. People shaping AI work at a median of 3 organizations over a career: 3 for university starters and institute and lab starters, versus 2 for company startersIncludes Max Planck Society. Across 6,853 people shaping AI with a dated work role, we estimate a median of 3 parent organizations over a career (mean 3.6), comparing role groups, starting sectors and starting decades from the 1950s to 2020–2026.

Colleagues

People with dated positions at the same organization in the same years.

Sources and credits

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  1. Dimitrios (Dimitris) Tzionas | alphaXiv alphaxiv.org. Checked 21 October 2026.
  2. Dimitris Tzionas dtzionas.com. Checked 21 October 2026.
  3. Embodied Hands: Modeling and Capturing Hands and Bodies Together arxiv.org. Checked 21 October 2026.
  4. Dimitrios Tzionas | European Laboratory for Learning and Intelligent Systems ellis.eu. Checked 21 October 2026.
  5. InteractVLM: 3D Interaction Reasoning from 2D Foundational Models openaccess.thecvf.com. Checked 21 October 2026.
  6. RHINO: Reconstructing Human Interactions with Novel Objects from Monocular Videos lxxue.github.io. Checked 21 October 2026.