Perception-Aware Policy Optimization for Multimodal Reasoning. - Zhenhailong Wang; Xuehang Guo; Sofia Stoica; Haiyang Xu 001; Hongru Wang 011; Hyeonjeong Ha; Xiusi Chen; Yangyi Chen; Ming Yan 008; Fei Huang 002; Heng Ji 001 (CoRR, 2025)