Automatic Mosaicing of Satellite Images Using Global Re-navigation

An automated satellite multi-image registration and mosaicing system based on aut?matic tie-point extra~tion and renavigation has been developed for A VHRR, TM, Viking Orbiter and pre-geocoded Images. ~he. ~eometnc aspects of image to image and image to ground registration form the core of any suc~ w.ork. ~owever a sIgnifIcant amount of preprocessing and some post-processing is n~ede~ to'produce seam.less mosaIC, 1~ partIcular for AVHRR and LANDSATTM. Results for A VHRR multi-scene regIstratIOn m the Rondom~ area of BrazIl.' Ar~ Sea, and LANDSA~-TM SOM of Kuwait are presented. Initial estimates ?f accuracy show ~MS mter-~cene reg1stratIOn of~.4 km (0.36 pIxels) for two resampled AVHRR scenes in Rondoma, 0.5 km (0.45 pIxels) for fIve AVHRR scenes m Aral Se~ an~ 9.5m ~0.33 pixels) for two LANDSAT-TM SOM scenes in Kuwait. Anal~sis of the effect of the scan angle on .t1e-pomt .an~ mterimage registration accuracy are included. A seamless mosaIC of LANDSAT-TM SOM scenes m Kuwalt IS also presented.