1. Green band extraction and data cleaning (removing -9999):  geo_3_
2. Create CHTC arguments:                                     geo_4_
3. Offset estimation on CHTC:                                 gcp.py/ gcp.sh/ gcp.sub
4. Merge the CHTC results back into one flightline            geo_5_
5. Calculate slope based on the offset                        geo_6_
6. Model the offset and map the new coords for each pixel     geo_7_
7. Image interpolation based on the new coords                geo_8_