NTIRE 2026 The 3rd Restore Any Image Model (RAIM) Challenge: AI Flash Portrait (Track 3). - Ya'nan Guan; Shaonan Zhang; Hang Guo; Yawen Wang; Xinying Fan; Tianqu Zhuang; Jie Liang; Hui Zeng; Guanyi Qin; Lishen Qu; Tao Dai 001; Shu-Tao Xia; et al. (CoRR, 2026)