USAGE: enrich [-r radii] [-t transparency] [-w weights] [-b bias] [-c compose] infile outfile
USAGE: enrich [-help or -h]

-r .... radii ............ two radii for sharpening; radii=large,small;
.......................... floats>0; default="60,3"
-t .... transparency ..... two transparency percentages corresponding to the
.......................... radii; 0<float<100; default="40,50"
-w .... weights .......... weights for generating high pass filter from
.......................... image minus the low pass filtered (blurred) image;
.......................... weights=imageval,lowpassval; floats>0;
.......................... default="1,1"
-b .... bias ............. bias value for the two high pass filtered images;
.......................... 0<float<100; default=50
-c .... compose .......... compose methods corresponding to radii;
.......................... default=hardlight,overlay

PURPOSE: To enhance an image by high pass filtering and composition.

DESCRIPTION: ENRICH enhances an image by high pass filtering and composition. The high pass filter is generated by subtracting a low pass filtered (blurred) version of the image from the image at two different filter sizes and then compositing them with the image with specified transparency.

ARGUMENTS:

-r radii ... RADII=LARGE,SMALL. Two required radii for the size of the high pass filters. Values are floats greater than 0. The default="60,3".

-t transparency ... TRANSPARENCY values for two high pass filtered images. Values are floats in the exclusive range of 0 to 100. The default="40,50".

-w weights ... WEIGHTS for generating the high pass filtered images by subtracting the low pass filtered images from the image. The first value is for the image and the second value is for the low pass filtered image. The same values will be used for both high pass filtered images. Values are floats greater than 0. The default="1,1".

-b bias ... BIAS to be used when generating the high pass filtered images. The same value will be used for both high pass filtered images. Values are floats in the exclusive range 0 to 100. The default=50.

-c compose ... COMPOSE methods to use with each high pass filtered image. Any valid IM compose method without arguments is permitted. The default="hardlight,overlay"

Concept provided by Philip Morgan

CAVEAT: No guarantee that this script will work on all platforms, nor that trapping of inconsistent parameters is complete and foolproof. Use At Your Own Risk.