ViPER: Empowering the Self-Evolution of Visual Perception Abilities in Vision-Language Models - Zhang, Juntian; Jin, Song; Cheng, Chuanqi; Liu, Yuhan; Lin, Yankai; Zhang, Xun; zhang, Yufei; Jiang, Fei; Yin, Guojun; Lin, Wei; Yan, Rui (International Conference on Learning Representations, 2026)