Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GCPWORKS|Disk+To+Disk+Registration">Disk To Disk Registration</a><hr>
<H4>Background</H4>
The ``Background'' editable field is used to set the background value
for mosaicking purposes. This is a data value which indicates
invalid or missing data. Pixels of uncorrected image data with this
value will not be registered into the georeferenced image.
Georeferenced image pixels with this value will always be completely
replaced by the registered uncorrected image value if they are
within blend width of the mosaic cut line.<p>
If this value is not set, there is no background value. Many
satellite images are delivered with areas of missing data at the
edges. These areas typically have a value of `0', so a background
value of 0 would avoid treating these areas as real data.
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Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GCPWORKS|Disk+To+Disk+Registration">Disk To Disk Registration</a><br>
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