MEMI-DS: A Benchmark Melasma Image Dataset for Image Segmentation. - Zhenwei Zhai; Chen Li; Zihao Wang; Marcin Grzegorzek; Lin Xu; Linshuai Zhang; Yujie Zhang; Pengfei Zeng; Ji Yin; Jing Guo; Tao Sun; Tao Jiang (ADMA (2), 2025)