Friday, December 16, 2022

envi geometric correction


toolbox -> geometric correction -> image registration workflow
select base map and warp map -> auto generate tie points

in evaluation panel open error table and gradient map
table by default is sorted by error. right click on column name to sort by it

zoom in to inspect error

delete high error row to reduce rms error. Close to 1 is good.

start editing -> click target on parking lot -> right click and accept
after auto switched to next image -> click on target location and accept again -> stop edit

new tie point is added manually. enable preview will display real time geo-correction

from warp tab select method -> next -> export -> image is geo-corrected
reference:

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