kitti raw_data 数据集 2011_09_30_drive系列， 2011_09_30_drive_0072_extract(1).zip 2011_09_30_drive_0034_sync.zip 2011_09_30_drive_0034_extract(1).zip 2011_09_30_drive_0033_sync.zip 2011_09_30_drive_0033_extract.zip 2011_09_30_drive_0027_sync.zip 2011_09_30_drive_0027_extract.zip 2011_09_30_drive_0020_syn