Read image information¶

Detailed description¶

Display information about the input image like: image size, origin, spacing, metadata, projections...

Parameters¶

This section describes in details the parameters available for this application. Table [1] presents a summary of these parameters and the parameters keys to be used in command-line and programming languages. Application key is ReadImageInfo .

Input Image Input image to analyse.

Display the OSSIM keywordlist Output the OSSIM keyword list. It contains metadata information (sensor model, geometry ). Information is stored in keyword list (pairs of key/value).

Write the OSSIM keywordlist to a geom file This option allows extracting the OSSIM keywordlist of the image into a geom file.

Start index X X start index.

Start index Y Y start index.

Size X X size (in pixels).

Size Y Y size (in pixels).

Pixel Size X Pixel size along X (in physical units).

Pixel Size Y Pixel size along Y (in physical units).

Image Origin X Origin along X.

Image Origin Y Origin along Y.

Estimated ground spacing X Estimated ground spacing along X (in meters).

Estimated ground spacing Y Estimated ground spacing along Y (in meters).

Number Of Bands Number of bands.

Sensor id Sensor identifier.

Image id Image identifier.

Acquisition time Acquisition time.

Upper left lattitude Lattitude of the upper left corner.

Upper left longitude Longitude of the upper left corner.

Upper right lattitude Lattitude of the upper right corner.

Upper right longitude Longitude of the upper right corner.

Lower right lattitude Lattitude of the lower right corner.

Lower right longitude Longitude of the lower right corner.

Lower left lattitude Lattitude of the lower left corner.

Lower left longitude Longitude of the lower left corner.

Nearest town Main town near center of image.

Country Country of the image.

Default RGB Display This group of parameters provide information about the default rgb composition.

• Red Band: Red band Number.
• Green Band: Green band Number.
• Blue Band: Blue band Number.

Projection Projection Coordinate System.

Keywordlist Image keyword list.

Ground Control Points information This group of parameters provide information about all GCPs.

• GCPs Number: Number of GCPs.
• GCP Projection: Projection Coordinate System for GCPs.
• GCPs Id: GCPs identifier.
• GCPs Info: GCPs Information.
• GCPs Image Coordinates: GCPs Image coordinates.
• GCPs Geographic Coordinates: GCPs Geographic Coordinates.

Load otb application from xml file Load otb application from xml file.

Save otb application to xml file Save otb application to xml file.

Example¶

To run this example in command-line, use the following:

otbcli_ReadImageInfo -in QB_Toulouse_Ortho_XS.tif

To run this example from Python, use the following code snippet:

#!/usr/bin/python

# Import the otb applications package
import otbApplication

# The following line creates an instance of the ReadImageInfo application
ReadImageInfo = otbApplication.Registry.CreateApplication("ReadImageInfo")

# The following lines set all the application parameters:
ReadImageInfo.SetParameterString("in", "QB_Toulouse_Ortho_XS.tif")

# The following line execute the application
ReadImageInfo.ExecuteAndWriteOutput()