I am currently a researcher at the Augmented Vision department at DFKI (German Research Center for Artificial Intelligence), specializing in computer vision and deep learning. My work centers on 3D scene understanding and neural rendering, with a growing interest in world models that enable machines to build structured, semantic, and interactive representations of complex environments.

I hold a Master’s degree in Computer Science from RPTU Kaiserslautern, where I graduated with distinction and my thesis focused on Open-Vocabulary 3D Scene Understanding with Gaussian Splatting. Prior to that, I completed my Bachelor’s in Computer Science and Engineering at the German University in Cairo, graduating ranked among the top students in my cohort.

Publications

ReLaGS: Relational Language Gaussian Splatting

CVPR 2026 Yaxu Xie*, Abdalla Arafa*, Alireza Javanmardi, Christen Millerdurai, Jia Cheng Hu, Shaoxiang Wang, Alain Pagani, Didier Stricker

We present a novel framework that constructs a hierarchical language-distilled Gaussian scene and its 3D semantic scene graph without scene-specific training, enabling efficient and scalable open-vocabulary 3D reasoning by jointly modeling hierarchical semantics and inter/intra-object relationships.

[Paper]   [Code]

SynthSL: Expressive Humans for Sign Language Image Synthesis

IEEE FG 2024 Jilliam M. Díaz Barros*, Chen-Yu Wang*, Jameel Malik, Abdalla Arafa, Didier Stricker

We introduce SynthSL, a large-scale synthetic dataset for sign language production, recognition and translation, along with a rendering pipeline based on the SMPL-X body model. We additionally propose a new Swin Transformer-based generator for sign image synthesis conditioned on body pose and appearance.

[Paper]   [Code]