Sample Extraction

Brief Description

Extracts samples values from an image.

Tags

Learning

Long Description

The application extracts samples values from animage using positions contained in a vector data file.

Parameters

• InputImage (in): Support image

• Input sampling positions (vec): Vector data file containing samplingpositions. (OGR format)

• Output samples (out): Output vector data file storing samplevalues (OGR format). If not given, the input vector data file is updated

• Output field names (outfield): Choice between naming method for output fields

  • Use a prefix and an incremental counter (prefix): Use a prefix and an incremental counter

    • Output field prefix (outfield.prefix.name): Prefix used to form the field names thatwill contain the extracted values.

  • Use the given name list (list): Use the given name list

    • Output field names (outfield.list.names): Full list of output field names.




• Field Name (field): Name of the field carrying the class name in the input vectors.

• Layer Index (layer): Layer index to read in the input vector file.

• Available RAM (Mb) (ram): Available memory for processing (in MB)

• Load otb application from xml file (inxml): Load otb application from xml file

• Save otb application to xml file (outxml): Save otb application to xml file

Limitations

None

Authors

OTB-Team

See also

Example of use

• Values for GUIs:

• in: support_image.tif

• vec: sample_positions.sqlite

• outfield: prefix

• outfield.prefix.name: band_

• field: label

• out: sample_values.sqlite

• Command line to execute:

otbcli_SampleExtraction -in support_image.tif -vec sample_positions.sqlite -outfield prefix -outfield.prefix.name band_ -field label -out sample_values.sqlite