Processing the InfraTec IR8300 data

The data are in ascii files with a .asc extension. They have 3 sections, the first 2 containing metadata and the 3rd containing the image data.

The procedure to process the data is:

• convert asc to tif files for easier managing / tagging using convert_infratec_to_tif.sh
• tag the images with the navigation information using get_nav_for_infratec_image.py

After this the images are ready to be geocorrected with APL using the photo geocorrection methodology, using photo_geocorrection.py

There is a helper script infratec_quick_run.sh and container process_infratec that can be used to make this a little easier, but loses some functionality of the individual scripts.

Instructions for container method

Build the container if it doesn't already exist (it does!) by using the make_docker.sh script and the -I flag.

Then run it with the following inputs:

COMPULSORY
-i <dir> = input directory of asc files from Infratec instrument
-o <dir> = output directory where tifs and geocorrected imagery goes
-s <file> = SBET file of navigation to tag to images
-c <file> = the config file for the geocorrection

OPTIONAL
-d = delete the intermediate geocorrection files
-r = rotate the Infratec imagery by 180 degrees

process_infratec.sif -i myasc/ -o /tmp/quickouts/ -s sbet_2022230.out -c photo_geocorrection.cfg -d -r