TY - JOUR A1 - Meng, X. T1 - FIELD GROUND TRUTHING DATA COLLECTOR – A MOBILE TOOLKIT FOR IMAGE ANALYSIS AND PROCESSING JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - I-4 SP - 157 EP - 162 Y1 - 2012/07/20 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/I-4/157/2012/ L1 - https://isprs-annals.copernicus.org/articles/I-4/157/2012/isprsannals-I-4-157-2012.pdf DO - 10.5194/isprsannals-I-4-157-2012 ER -