TY - JOUR A1 - Song, G. X. T1 - EXPLORATION OF THE METHOD OF TRACING THE BOUNDARY AND PATTERN OF THE IMPERIAL GARDEN BY FOLLOWING THE TRACES OF HISTORY – TAKING CHANGCHUN GARDEN AS AN EXAMPLE JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - VIII-M-1-2021 SP - 149 EP - 153 Y1 - 2021/08/27 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/VIII-M-1-2021/149/2021/ L1 - https://isprs-annals.copernicus.org/articles/VIII-M-1-2021/149/2021/isprs-annals-VIII-M-1-2021-149-2021.pdf DO - 10.5194/isprs-annals-VIII-M-1-2021-149-2021 ER -