ossimGeoidEgm96 in SARDEMProjection
A ossimGeoidEgm96 is used instead of DEMHandler in SARDEMProjection.
This purpose was to improve performance, only. When a emg96 is provided, results between ossimGeoidEgm96 and DEMHandler are equal (cf : otbSARGeoidProjectionTest)
On HAL (a whole g2019 node), we have :
- S4Reunion (diapOTB.py) : 15min for ossimGeoidEgm96 vs 16min30s for DEMHandler
- IW_IRAN (burst 3-4 with SARMultiSlc_S1IW.py) : 9min30s for ossimGeoidEgm96 vs 16m51.229s
S1IW calls SARDEMProjection for each burst => a higher impact on performance.
Results are equivalent.