2026 Plan-and-Verify Video Reward Reasoning with Spatio-Temporal Scene Graph Grounding Hyomin Kim, Junghye Kim, Joanie Hayoun Chung, and 4 more authors In EMNLP, 2026 PDF FiRe: Fine-grained Multimodal Reasoning for Enhanced Image Generation Yongjin Kim, Yoonjin Oh, Yerin Kim, and 5 more authors arXiv preprint, 2026 PDF Code OSPO: Object-Centric Self-Improving Preference Optimization for Text-to-Image Generation Yoonjin Oh, Yongjin Kim, Hyomin Kim, and 2 more authors In CVPR, 2026 PDF Code 2025 Slot-MLLM: Object-Centric Visual Tokenization for Multimodal LLM Donghwan Chi, Hyomin Kim, Yoonjin Oh, and 7 more authors arXiv preprint, 2025 PDF Code