Grading Related Feature Extraction of Chinese Mitten Crab Based on Machine Vision Dawei Sun, Jiangtao Li, Zhuo Li, Chengquan Zhou, Yingfeng Lu and Hongbao Ye BIO Web Conf., 142 (2024) 02016 Published online: 21 November 2024 DOI: 10.1051/bioconf/202414202016