I try to apply coregistration on S-1 calibration products using Cross-Correlation.
I found that this operator failed for some images when the option “Estimate Initial Coarse Offset” is click. This option will result in larger residual and cause coregistration failed.
My question is:
What does the “Estimate Initial Coarse Offset” actually do?
Do I need to enable this option always?
If not, what condition should I enable this option? or it is not necessary to enable this option for coregistration step?