@article{spatialdreamerincentivizingspatialreason,
  title = {SpatialDreamer: Incentivizing Spatial Reasoning via Active Mental Imagery},
  author = {Meng Cao and Xingyu Li and Xue Liu and Ian Reid and Xiaodan Liang},
  year = {2025},
  eprint = {2512.07733},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2512.07733},
}