SARCorrelationGrid¶
Computes SAR correlation grid.
Description¶
This application creates a deformation grid based on correlation estimation. The output grid is a VectorImage composed of three values : shift in range, shift in azimut and a correlation rate. The inputs of this application are MultiLooked images (real images).
Parameters¶
Input Master image (real image) -inmaster image Mandatory
Master Image (real image).
Input Slave image (real image) -inslave image Mandatory
Slave Image (real image).
Input DEM directory -indem filename [dtype]
Input DEM directory to help projection.
Output Correlation grid (Vector Image) -out image [dtype] Mandatory
Output Correlation Grid Vector Image (Shift_ran, Shift_azi, Correlation_rate).
MultiLook factor on distance -mlran int Default value: 3
MultiLook factor on distance.
MultiLook factor on azimut -mlazi int Default value: 3
MultiLook factor on azimut.
Size of patch into each dimension for correlation estimation -patchsize int Default value: 20
Size of patch into each dimension for correlation estimation.
Grid step for range dimension (into SLC/SAR geometry) -gridsteprange int Default value: 150
Grid step for range dimension (into SLC/SAR geometry).
Grid step for azimut dimension (into SLC/SAR geometry) -gridstepazimut int Default value: 150
Grid step for azimut dimension (into SLC/SAR geometry).
Subpixel measure -subpixel int Default value: 10
Subpixel measure.
Available RAM (MB) -ram int Default value: 256
Available memory for processing (in MB).
Examples¶
From the command-line:
otbcli_SARCorrelationGrid -indem ./DEMDir -inmaster s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff -inslave s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff -out corGrid.tif
From Python:
import otbApplication
app = otbApplication.Registry.CreateApplication("SARCorrelationGrid")
app.SetParameterString("indem", "./DEMDir")
app.SetParameterString("inmaster", "s1a-s4-slc-vv-20160818t014650-20160818t014715-012648-013db1-002_ML.tiff")
app.SetParameterString("inslave", "s1b-s4-slc-vv-20160929t014610-20160929t014634-002277-003d71-002_ML.tiff")
app.SetParameterString("out", "corGrid.tif")
app.ExecuteAndWriteOutput()
Limitations¶
Only Sentinel 1 products are supported for now.