This tool is an extension for ENVI 5.x created to compute the heights of objects from their ground shadow.
The Shadow to Height measurement tool was updated (version 1.1) to automatically extract Sun Elevation and Time acquisition information from the metadata file, if available.
-Run the "Shadow to height" tool from the Extension folder under the ENVI toolbox.
- Manually enter the sun elevation or push button "compute sun elevation and azimuth".
- Go in the ENVI bar and click Polyline annotation "\"
- Create the polyline annotation over the image fitting an object shadow on the ground.
(Middle mouse button if you want to pan the image and create more annotations)
- Select one or more polylines and click "Compute height from shadow"
- Check the option "Update Sun Elevation for each [Lat,Lon]" if you want more accuracy computing the sun elevation that considers the [lat, lon] shadow position in the scene.
- The Feature counting tool starts and creates an "H" symbol close to the annotation with the computed Height.
- The Feature counting tool now contains all the shadow heights and let you save and browse all the measurements.
DOWNLOAD :
http://rgho.st/private/7ZZhwsn8W/bf3ae7227b3cde3b1f08b59ea253f590
أكثر...
The Shadow to Height measurement tool was updated (version 1.1) to automatically extract Sun Elevation and Time acquisition information from the metadata file, if available.
-Run the "Shadow to height" tool from the Extension folder under the ENVI toolbox.
- Manually enter the sun elevation or push button "compute sun elevation and azimuth".
- Go in the ENVI bar and click Polyline annotation "\"
- Create the polyline annotation over the image fitting an object shadow on the ground.
(Middle mouse button if you want to pan the image and create more annotations)
- Select one or more polylines and click "Compute height from shadow"
- Check the option "Update Sun Elevation for each [Lat,Lon]" if you want more accuracy computing the sun elevation that considers the [lat, lon] shadow position in the scene.
- The Feature counting tool starts and creates an "H" symbol close to the annotation with the computed Height.
- The Feature counting tool now contains all the shadow heights and let you save and browse all the measurements.
DOWNLOAD :
http://rgho.st/private/7ZZhwsn8W/bf3ae7227b3cde3b1f08b59ea253f590
أكثر...