Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/IHS">IHS</a><hr>
<H3>PARAMETERS</H3>
IHS is controlled by the following global parameters:
<P>
<pre>Name     Prompt                                  Count     Type
FILE     Database File Name                      1-64      Char
DBIC     Database Input Channel List             3         Int
DBOC     Database Output Channel List            3         Int
DBIW     Database Input Window                   0-4       Int
IHSMODEL IHS Model: CYLINDER/HEXCONE             1-8       Char
</pre>
<H4>FILE</H4>
Specifies the name of the PCIDSK image file containing the
Red-Green-Blue input and Intensity-Hue-Saturation output image
channels.
<P>
<PRE>
 EASI&gt;FILE=&quot;filename&quot;
</PRE>
<H4>DBIC</H4>
Specifies the three input image channels to be interpreted as the
Red, Green, and Blue components of a colour image.
<P>
<PRE>
 EASI&gt;DBIC=red,green,blue
</PRE>
<UL>
<LI> Input channels must all be 8-bit, if output channels are 8-bit. 
<LI> Input channels can be any type, if output channels are 32-bit. 
<LI> See the DETAILS section for more information on channel types. 
<LI> Duplicate input channels are allowed. 
<LI> Ranges of channels can be specified with negative values. For
example, {2,-4} is internally expanded to {2,3,4}. 
</UL>
<H4>DBOC</H4>
Specifies the three output image channels to be interpreted as the
Intensity, Hue, and Saturation components of a colour image.
<P>
<PRE>
 EASI&gt;DBOC=intensity,hue,saturation
</PRE>
<UL>
<LI> Output channels can be the same as the input channels. 
<LI> Output channels must be either all 8-bit or all 32-bit. 
<LI> See the DETAILS section for more information on channel types. 
<LI> Duplicate output channels are NOT allowed. 
<LI> Ranges of channels can be specified with negative values. For
example, {2,-4} is internally expanded to {2,3,4}. 
</UL>
<H4>DBIW</H4>
Specifies the rectangular window of image data to be transformed.
<P>
<PRE>
 EASI&gt;DBIW=Xoffset,Yoffset,Xsize,Ysize
 EASI&gt;DBIW=                     | transform entire image
</PRE>
<H4>IHSMODEL</H4>
<PRE>
  Valid Values:   CYLINDER,HEXCONE
  Default:        CYLINDER
</PRE>
Specifies the type of IHS colour model to use.
<P>
<PRE>
 EASI&gt;IHSMODEL=&quot;HEXCONE         | Hexcone model
 EASI&gt;IHSMODEL=                 | defaults to CYLINDER

  CYLINDER -&gt; Cylinder model (original method)
  HEXCONE  -&gt; Hexcone model
</PRE>
See the BACKGROUND and ALGORITHM sections for more information about
these IHS models.
<P>
<hr>
Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/IHS">IHS</a><br>
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