Fig 1.  Port Athur, Dalian,  Liaoning       Mar 23, 1966
Fig 3.   Imperial Palace, Beijing     Sep 21, 1966
Shenyang, Liaoning Province       Aug 20, 1968
Shenyang, Liaoning Province       Aug 20, 1968
Fig 4.  Beihai Park, Beijing       Sep 21, 1966
Fig 2.  Port Athur, Dalian,  Liaoning       Mar 23, 1966
        With the help of the technology, TopView finishes lots of tests about the different time and regions, and then KH parameter mode parameters is established. Using OrthoMap-a remote sensing image processing professional software, we complete the correction of the KH, KFA, and other historical images more efficiently. By testing many images in different times, compared with other traditional software, such as Erdas, Envi, the processing time is reduced by 50%, besides, the accuracy is increased by 40%. And correction precision is within 4 pixels at plain, 8 pixels at mountain area.
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