求eurocity person（https://eurocity-dataset.tudelft.nl/eval/user/login?_next=/eval/downloads/detection#%EF%BC%89%E6%95%B0%E6%8D%AE%E9%9B%86%EF%BC%81%E4%B8%87%E5%88%86%E6%84%9F%E8%B0%A2