# px     py   pz   DEMFileName 
# Strip DEM - [px py pz] =Coordinates aligned with the reference DEM (reference in bundle adjustment). 
        6.78        -0.50         2.50  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20110401_1030010009CDA700_103001000A47B400_2m_lsf_seg2_meta.txt 
        1.58        -0.34         3.38  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20110406_103001000A896700_103001000A751700_2m_lsf_seg2_meta.txt 
        2.00        -3.97        -0.45  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//W1W1_20110410_102001001260E300_1020010012E48400_2m_lsf_seg8_meta.txt 
       -1.43        -3.58        -5.74  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//W1W2_20110606_1020010013097800_103001000BA93A00_2m_lsf_seg1_meta.txt 
       -2.01        -1.88        -0.60  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20120603_102001001BC0F500_102001001CE78000_2m_lsf_seg1_meta.txt 
       -0.70         0.34        -2.37  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20121020_103001001CD6EE00_103001001C901700_2m_lsf_seg1_meta.txt 
       -0.96        -2.42         2.72  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//W2W2_20130523_103001002306B700_10300100237A9300_2m_lsf_seg1_meta.txt 
       -0.30        -1.57        -0.82  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20140906_102001003462BC00_10200100341DA900_2m_lsf_seg1_meta.txt 
       -0.58        -1.66         7.48  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20150408_10300100413AF800_103001004042B900_2m_lsf_seg1_meta.txt 
        0.07        -2.03        -1.98  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20150414_102001003B621B00_10200100397A4300_2m_lsf_seg1_meta.txt 
       -0.22        -1.86        -2.83  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20160622_103001005889B000_1030010059600600_2m_lsf_seg1_meta.txt 
       -1.14        -0.90        -1.45  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20170613_104001002D29BC00_104001002D2F2400_2m_lsf_seg1_meta.txt 
        1.61         2.69         2.00  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20170615_103001006B2D8000_103001006A245600_2m_lsf_seg1_meta.txt 
       -2.55         4.24        -1.11  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV01_20170715_102001006470A200_1020010064A28B00_2m_lsf_seg1_meta.txt 
        0.56         0.70        -0.13  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20171014_1030010073C14600_10300100723E9D00_2m_lsf_seg1_meta.txt 
        2.41         3.91         5.80  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180509_103001007FD44D00_103001007DCC3500_2m_lsf_seg1_meta.txt 
       -3.24         1.93        -5.76  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20180701_1030010080A9E700_1030010080D31F00_2m_lsf_seg1_meta.txt 
       -1.75         0.70         2.03  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20180917_10400100418BBF00_10400100434B4B00_2m_lsf_seg1_meta.txt 
       -1.47         1.42        -0.20  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20190616_104001004D1E0A00_104001004EA1A200_2m_lsf_seg2_meta.txt 
       -1.57        -0.00         2.10  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV03_20190708_104001004D502E00_104001004E0F3D00_2m_lsf_seg1_meta.txt 
        2.91         4.79        -4.57  /home/chunlidai/blue/data/ArcticDEMdata/arcticdem_34_alaska_north//WV02_20200706_10300100A754EE00_10300100AA287400_2m_lsf_seg1_meta.txt