import rasterio
from pyproj import CRS

def get_crs_info(tif_path):
    with rasterio.open(tif_path) as src:
        crs = src.crs
        if not crs:
            return "未知坐标系"
        # 硬编码检查 CGCS2000 3度带第35带
        if "CGCS2000" in crs.to_string() and "Gauss-Kruger zone 35" in crs.to_string():
            return "EPSG:4523"
        # 尝试用 pyproj 解析
        try:
            pyproj_crs = CRS.from_user_input(crs.to_wkt())
            epsg_code = pyproj_crs.to_epsg()
            return f"EPSG:{epsg_code}" if epsg_code else crs.to_wkt()
        except Exception as e:
            return f"解析失败: {e}"

tif_path = "tile_0_0.tif"
print(f"TIFF坐标系: {get_crs_info(tif_path)}")