The co-registration of the SPOT image (31 March 1991, SIC 187) was done as part of the Heard Island AAS2939 project (Lucieer et al.). This SPOT image was co-registered to the IKONOS Jan. 2004 image (metadata ID: SIC_266_267_georectification). All processing was done in ENVI 4.4 (http://www.ittvis.com).
- The previously orthorectified SPOT image (orthos2x24545.tif; Georeferenced SPOT scene number S2H1910331050326, acquired on 31 Mar 1991), was co-registered to the IKONOS 2004 base image (metadata ID: SIC_266_267_georectification). The IKONOS image was resampled to a 20m resolution to match the SPOT image pixel size. - The SPOT image was co-registered to the IKONOS 2004 image using an image-to-image registration method. The image was warped using 22 pts with an RMS Error of 2.31 (based on a first order polynomial), and a triangulation method with nearest neighbour resampling. - The co-registered SPOT image was then subset using the Jan. 2006 Quickbird image, as this was the image it would be compared to during change detection.
A PDF document providing further details is available for download from the URL given below.
Access to the image itself is limited owing to copyright issues. Contact the Australian Antarctic Data Centre for details and further information.