MD Khalequzzaman Chowdhury Sayem

We introduce HandVQA, a large-scale benchmark with 1.6M+ geometry-derived VQA pairs spanning joint angles, distances, and relative spatial relations (X/Y/Z). We find that explicit 3D supervision improves spatial reasoning and also transfers to gesture recognition and hand-object interaction tasks.

@inproceedings{sayem2026handvqa,
  title     = {HandVQA: Diagnosing and Improving Fine-Grained Spatial Reasoning about Hands in Vision-Language Models},
  author    = {Sayem, MD Khalequzzaman Chowdhury and Chowdhury, Mubarrat Tajoar and Tiruneh, Yihalem Yimolal and Khan, Muneeb A. and Ali, Muhammad Salman and Bhattarai, Binod and Baek, Seungryul},
  booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
  year      = {2026}
}

FlexiAvatar is a visibility-aware framework for reconstructing animatable 3D Gaussian human avatars. It optimizes only visible body regions, combines occlusion-robust SMPL-X tracking with part-specific refinement and diffusion-based completion, and improves reconstruction quality while reducing runtime and memory overhead in partial-visibility settings.

@inproceedings{tiruneh2026flexiavatar,
  title     = {FlexiAvatar: Unified 3D Gaussian Human Avatars Under Arbitrary Body Visibility},
  author    = {Tiruneh, Yihalem Yimolal and Ali, Muhammad Salman and Jeong, Uyoung and Khan, Muneeb A. and Sayem, MD Khalequzzaman Chowdhury and Bayramgeldiyev, Allanur and Bhattarai, Binod and Baek, Seungryul},
  booktitle = {Proceedings of the European Conference on Computer Vision (ECCV)},
  year      = {2026}
}

QORT-Former optimizes queries to balance efficiency and accuracy, leveraging hand-object contact information and a three-step feature update mechanism. It runs at 53.5 FPS on an RTX 3090 Ti and improves over prior methods on the H2O and FPHA datasets.

@inproceedings{ismayilzada2025qortformer,
  title     = {QORT-Former: Query-Optimized Real-Time Transformer for Understanding Two Hands Manipulating Objects},
  author    = {Ismayilzada, Elkhan and Sayem, MD Khalequzzaman Chowdhury and Tiruneh, Yihalem Yimolal and Chowdhury, Mubarrat Tajoar and Boboev, Muhammadjon and Baek, Seungryul},
  booktitle = {Proceedings of the AAAI Conference on Artificial Intelligence},
  year      = {2025}
}