Mapping Function for Concentration
Mapping Function for Concentration
This option is used to specify the function to be used to map between
intensity levels and the associated external field (eg. concentration). The
mapping procedure employs a least squares fit between the intensities
(current or reference) of the reference windows, and their associated
external field value. The function specified is linear in the intially
unknown coefficients. The terms in the mapping are specified one at a time.
Concentration 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