# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
       -1.96        -0.15        -0.24  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130407_102001001F064E00_102001002064BD00_2m_lsf_seg9_meta.txt 
       -2.52         0.25        -0.28  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130407_102001001F064E00_102001002064BD00_2m_lsf_seg7_meta.txt 
        0.05         2.81         0.01  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130407_102001001F064E00_102001002064BD00_2m_lsf_seg8_meta.txt 
       -2.97        -0.36        -6.36  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20130414_10200100207C5800_102001002225E100_2m_lsf_seg2_meta.txt 
       -0.25         0.50         2.30  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20130618_1030010023069300_1030010023608C00_2m_lsf_seg5_meta.txt 
        2.52        -2.37         4.15  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20140331_103001002F45EC00_103001002E7E6D00_2m_lsf_seg1_meta.txt 
        2.29         1.81         0.45  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20170327_1030010068971200_1030010068184900_2m_lsf_seg3_meta.txt 
       -1.47        -0.05        -1.20  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20170328_1030010067106300_10300100664F7A00_2m_lsf_seg2_meta.txt 
        4.30        -2.45         1.17  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//W2W3_20180607_103001007C22B000_104001003E467000_2m_lsf_seg1_meta.txt