Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GCPWORKS|Theory|Resampling">Resampling</a><hr>
<H5>Sin(x)/x 8pt and 16pt</H5>
8pt determines the grey level from the weighted average of the 64 closest
pixels to the specified input coordinates and assigns the value to the
output coordinates. 16pt does the same, using the 256 closest pixels. The
image is sharper than that produced by bilinear interpolation,
and it does not have the disjointed appearance produced by nearest
neighbour interpolation.  Because the grey level values are altered by
this method, any image classification processes should be performed
before the interpolation.  Sin(x)/x with an 8 x 8 window requires about 20
to 40 times the computation time required by the nearest neighbour method.
Sin(x)/x with a 16 x 16 window requires 40 to 80 times the computation time 
required by the nearest neighbour method.
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Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GCPWORKS|Theory|Resampling">Resampling</a><br>
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