Mapping Function for Pixel Intensities
Mapping Function for Pixel Intensities
This option is used to specify the function to be used to map between
current and reference intensity levels. The mapping procedure employs a
least squares fit between the current intensities of the reference windows,
and their reference intensities. The function specified is linear in the
intially unknown coefficients. The terms in the mapping are specified one
at a time.
Intensity mapping functions are a linear combination of coefficients
and expressions involving the current intensity. One expression must be
specified for each initially unknown coefficient.
Term ##
Expression for this term as a function of P (blank to finish) ?
The string specified here determines the expression for one of the terms
in the mapping function. The letter P should be used to represent the
intensity. The normal DigImage rules for expressions apply (consult
<shift><f1> for details). A blank line indicates all terms have been
specified.
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DigImage User Documentation
Stuart Dalziel,
last page update: 19 February 1996