[argyllcms] Re: Profiling between two images
- From: Pascal de Bruijn <pmjdebruijn@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Tue, 24 Feb 2009 17:39:13 +0100
On Thu, Feb 19, 2009 at 11:03 PM, Gerhard Fuernkranz <nospam456@xxxxxx> wrote:
> Pascal de Bruijn wrote:
>> With pretty extreme values in xicc/xmatric.c all my curves are very smooth:
>>
>> #define XSHAPE_BASE 0.001
>> #define XSHAPE_HBASE 0.01
>>
>
> I've no feeling how the particular regularization for the shaper
> functions in xmatrix.c will behave, but at least typical smoothing
> factors for RBFs, splines and other linear models rather follow a
> logarithmic scale, so the range for useful smoothing factors
> (slight...strong smoothing) can indeed span a few powers of 10.
Right.
Fiddling with these defines has worked out pretty well for me.
Gill, is there any chance of making these command-line adjustable for
ArgyllCMS 1.0.4? If only by simple multiplication...
# colprof -s 100
would turn XSHAPE_BASE 0.00001 into 0.001
and XSHAPE_HBASE 0.0001 into 0.01
(for example)
Regards,
Pascal de Bruijn
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