[argyllcms] Re: Profiling between two images
- From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 17 Feb 2009 15:44:42 +0100
On Tue, Feb 17, 2009 at 12:29 PM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
> Pascal de Bruijn wrote:
>>
>> /* Weights in shaper parameters, to minimise unconstrained "wiggles" */
>> #define MXNORDERS 30 /* Maximum shaper harmonic
>> orders to use */
>> #define XSHAPE_MAG 5000.0 /* Overall shaper parameter
>> magnitide */
>> #define XSHAPE_BASE 0.00001 /* 0 & 1 harmonic weight */
>> #define XSHAPE_HBASE 0.0001 /* 2nd and higher additional
>> weight */
>
>> I do wonder how each variable will affect the contraining of the
>> wiggles...
>
> The only way of finding out is to try it and see. Increase
> XSHAPE_BASE and/or XSHAPE_HBASE. Unless you have a very
> small number of sample points though, the accuracy of the profile will
> probably deteriorate...
Some loss in mathematical accuracy is very acceptable...
However, can fiddling with these values also affect the generated matrix? Or
will it solely affect the shaper?
Regards,
Pascal de Bruijn
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