AI & Visual Communication

Topic modeling of video and image data: A visual semantic unsupervised approach

VisTopics, a computational framework for analyzing large-scale visual datasets through frame extraction, deduplication, image captioning, and topic modeling.

Lokmanoglu, A. D., & Walter, D. (2025). Topic modeling of video and image data: A visual semantic unsupervised approach. Communication Methods and Measures. [DOI] [Code]

Highlights:

• vistopics (Topic Visualization for Visuals) is a Python package for video and image processing
• Replication Code on GitHub

Meme Content Analysis: Classification and Diffusion of Memes in Fringe Social

This project focuses on the classification and diffusion of memes within fringe social platforms, analyzing the content and spread of memes related to extremism and radicalization.

Highlights:

• Meme content classification
• Diffusion analysis in fringe platforms
• Impact on radicalization

Project Details:

• Start Date: 2022
• End Date: 2023
• Funding Agency: The Global Network on Extremism and Technology (GNET)

Other relevant projects and repositories

• Yang, F., Cai, M., Mortenson, C., Fakhari, H., Lokmanoglu, A. D., Diakopoulos, N., Nisbet, E. C., & Kay, M. (2024). The Backstory to “Swaying the Public”: A Design Chronicle of Election Forecast Visualizations. IEEE Transactions on Visualization and Computer Graphics. [DOI]
• Yang, F., Cai, M., Mortenson, C. M., Fakhari, H., Lokmanoglu, A. D., Hullman, J., Franconeri, S., Diakopoulos, N., Nisbet, E., & Kay, M. (2023). Swaying the Public? Impacts of Election Forecast Visualizations on Emotion, Trust, and Intention in the 2022 U.S. Midterms. IEEE Transactions on Visualization and Computer Graphics. (*IEEE VIS23 Best Paper Award*) [Preprint]
• vistopics (Visual Semantic Topic Modeling) – Python package for analyzing video and image data [PyPI] VisTopics Project Page [Website]
• Replication Code [GitHub]
• Arabic and English OCR [GitHub]