Yang Miao, Jan‑Nico Zaech, Xi Wang, Fabien Despinoy, Danda Pani Paudel, Luc Van Gool

LangHOPS introduces a multimodal framework for open‑vocabulary object‑part segmentation. The system models hierarchical part relationships using structured prompts processed with large language models. The approach improves zero‑shot part segmentation performance on PartImageNet and ADE20K benchmarks and achieves better generalization to previously unseen object categories.