TY - JOUR A1 - Niemeyer, F. A1 - Schima, R. A1 - Grenzdörffer, G. T1 - RELATIVE AND ABSOLUTE CALIBRATION OF A MULTIHEAD CAMERA SYSTEM WITH OBLIQUE AND NADIR LOOKING CAMERAS FOR A UAS JO - Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Archives VL - XL-1/W2 SP - 287 EP - 291 Y1 - 2013/08/16 PB - Copernicus Publications SN - 2194-9034 UR - https://isprs-archives.copernicus.org/articles/XL-1-W2/287/2013/ L1 - https://isprs-archives.copernicus.org/articles/XL-1-W2/287/2013/isprsarchives-XL-1-W2-287-2013.pdf DO - 10.5194/isprsarchives-XL-1-W2-287-2013 ER -