Pixel Value

Brief Description

Get the value of a pixel.

Tags

Miscellaneous, Utilities, Coordinates, Raster

Long Description

This application gives the value of a selected pixel. There are three ways to designate a pixel, with its index, its physical coordinate (in the physical space attached to the image), and with geographical coordinate system. Coordinates will be interpreted differently depending on which mode is chosen.

Parameters

• Input Image (in): Input image

• X coordinate (coordx): This will be the X coordinate interpreted depending on the chosen mode

• Y coordinate (coordy): This will be the Y coordinate interpreted depending on the chosen mode

• Coordinate system used to designate the pixel (mode): Different modes can be selected, default mode is Index.

  • Index (index): This mode uses the given coordinates as index to locate the pixel.

  • Image physical space (physical): This mode interprets the given coordinates in the image physical space.

  • EPSG coordinates (epsg): This mode interprets the given coordinates in the specified geographical coordinate system by the EPSG code.

    • EPSG code (mode.epsg.code): This code is used to define a geographical coordinate system. If no system is specified, WGS84 (EPSG : 4326) is used by default.




• Channels (cl): Displayed channels

• Pixel Value (value): Pixel radiometric value

• 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: QB_Toulouse_Ortho_XS.tif

• coordx: 50

• coordy: 100

• cl: Channel1

• Command line to execute:

otbcli_PixelValue -in QB_Toulouse_Ortho_XS.tif -coordx 50 -coordy 100 -cl Channel1