MindJourney: Test-Time Scaling with World Models for Spatial Reasoning
NeurIPS 2025
Yuncong Yang, Jiageng Liu, Zheyuan Zhang, Siyuan Zhou, Reuben Tan, Jianwei Yang, Yilun Du, Chuang Gan
MindJourney is a test-time scaling framework that leverages the 3D imagination capability of World Models to strengthen spatial reasoning in Vision-Language Models (VLMs). We evaluate on the SAT dataset and provide a baseline pipeline, a Stable Virtual Camera (SVC) based spatial beam search pipeline, and a Search World Model (SWM) based spatial beam search pipeline.