Tool NameDirect Georeferencing of Airborne Photographs
Tool ID4
Library IDpj_georeference
Version1.0
Author(s)O.Conrad (c) 2012

Please cite SAGA whenever you use it for your publications:

doi:10.5194/gmd-8-1991-2015


Description

Direct georeferencing of aerial photographs uses extrinsic (position, altitude) and intrinsic (focal length, physical pixel size) camera parameters. Orthorectification routine supports additional data from a Digital Elevation Model (DEM).

References

Baumker, M. & Heimes, F.J. (2001): New Calibration and Computing Method for Direct Georeferencing of Image and Scanner Data Using the Position and Angular Data of an Hybrid Inertial Navigation System. OEEPE Workshop, Integrated Sensor Orientation, Hannover 2001. PDF


Parameters

NameTypeIdentifierDescriptionConstraints
Input
Unreferenced Gridsgrid list, inputINPUT
Elevationgrid, input, optionalDEM
Target Systemgrid, input, optionalTARGET_TEMPLATEuse this grid's system for output grids
Output
Referenced Gridsgrid list, outputOUTPUT
Extentshapes, output, optionalEXTENT
Options
Defaultfloating point numberDEM_DEFAULTdefault value if no grid has been selectedDefault: 0
Focal Length [mm]floating point numberCFLMinimum: 0.000000
Default: 80
CCD Physical Pixel Size [micron]floating point numberPXSIZEMinimum: 0.000000
Default: 5.2
Xfloating point numberXDefault: 0
Yfloating point numberYDefault: 0
Zfloating point numberZDefault: 1000
Omegafloating point numberOMEGAX axis rotation angle [degree] (roll)Default: 0
Phifloating point numberPHIY axis rotation angle [degree] (pitch)Default: 0
Kappafloating point numberKAPPAZ axis rotation angle [degree] (heading)Default: 0
Offsetfloating point numberKAPPA_OFForigin adjustment angle [degree] for kappa (Z axis, heading)Default: 90
OrientationchoiceORIENTATIONAvailable Choices:
[0] BLUH
[1] PATB
Default: 0
Row OrderchoiceROW_ORDERAvailable Choices:
[0] top down
[1] bottom up
Default: 0
ResamplingchoiceRESAMPLINGAvailable Choices:
[0] Nearest Neighbour
[1] Bilinear
[2] Cubic 1
[3] Cubic 2
Default: 3
Data Typedata typeDATA_TYPEAvailable Choices:
[0] unsigned 1 byte integer
[1] signed 1 byte integer
[2] unsigned 2 byte integer
[3] signed 2 byte integer
[4] unsigned 4 byte integer
[5] signed 4 byte integer
[6] unsigned 8 byte integer
[7] signed 8 byte integer
[8] 4 byte floating point number
[9] 8 byte floating point number
[10] same as original
Default: 10
Target Grid SystemchoiceTARGET_DEFINITIONAvailable Choices:
[0] user defined
[1] grid or grid system
Default: 0
Cellsizefloating point numberTARGET_USER_SIZEMinimum: 0.000000
Default: 1
Westfloating point numberTARGET_USER_XMINDefault: 0
Eastfloating point numberTARGET_USER_XMAXDefault: 100
Southfloating point numberTARGET_USER_YMINDefault: 0
Northfloating point numberTARGET_USER_YMAXDefault: 100
Columnsinteger numberTARGET_USER_COLSNumber of cells in East-West direction.Minimum: 1
Default: 101
Rowsinteger numberTARGET_USER_ROWSNumber of cells in North-South direction.Minimum: 1
Default: 101
RoundingbooleanTARGET_USER_FLATRound bounding coordinates to multiples of cell size. Ignored if cell size has decimal places.Default: 1
FitchoiceTARGET_USER_FITSAvailable Choices:
[0] nodes
[1] cells
Default: 0