Co-registration with SNAP

• Start SNAP Desktop
• File --> Open Product... Browse and mark UAS ortho mosiacs. \geodata\uas\clip_ebee_ortho_align.tif is the master image and \geodata\uas\clip_mavic_ortho_align.tif is the slave image. Open or drag and drop marked files from Windows File Explorer into the SNAP Product Explorer tab.
• Mark the slave image clip_mavic_ortho_align.tif in ToC. Raster --> Subset --> Band Subset. Check only band_1.

• Repeat this step for band_2 and band_3 creating separated single bands of the slave image .
• Raster --> Geometric operations --> GeFolki Co-registration.
• Define I/O Parameters and Processing Parameters:

• Click Run.
• Repeat this step for band_2 (subset_1) and band_3 (subset_1). Adjust processing parameters for each band, accordingly.
• Create a stack of all coregistered single bands. Raster --> Geometric operations --> Collocation

• Raster --> Data Conversion --> Convert Datatype
• Check Save as and select GeoTIFF from drop downlist

• Load clip_ebee_ortho_align.tif, clip_mavic_ortho_align.tif and collocate_CONV.tif into QGIS and check the geometric quality of the coregistration.