hi,
Isn't it more natural to think about kriging in the CIE luv or lab color
space
since they are uniform and closer to the munsel color space which is used
in the field. Interpolation in RGB space seems like a bad idea, and
could give wierd results. Also aren't there adbrupt discontinuities in
color betweensoil horizons? is color varying smoothly?
But I think CIE LUV or LAB makes alot more sense.
Nicholas
CH3
|
N Nicholas Lewin-Koh
/ \Dept of Statistics
NC C==OProgram in Ecology and Evolutionary Biology
|| || | Iowa State University
|| || | Ames, IA 50011
CHC N--CH3 http://www.public.iastate.edu/~nlewin
\ / \ /[EMAIL PROTECTED]
NC
| || Currently
CH3 O Graphics Lab
School of Computing
National University of Singapore
The Real Part of Coffee[EMAIL PROTECTED]
On Tue, 24 Apr 2001, WARR Benjamin wrote:
Dear All,
I am interested in kriging colour (soil colour - of course) and was
thinking. Colour is perceived via 3 photoreceptors on the retina, therefore
3 variables are rnecessary and sufficient to represent any colour. Numerical
manipulation of Munsell colour codes does not appear to be in any way
resonable, then there are the CIE and RGB systems. CIE has 3 variables XYZ
and RGB clearly red, green and blue. The RGB system appears the most easily
understood. Each variable can range from 0-255, and the variables are
additive. The question is does anyone have any experience of constraining
the estimates to lie between 0-255, or any ideas about the possible
necessity of co-kriging,
thanks
Benjamin Warr
Research Associate to Prof. Ayres,
Geostatistician, Environmental Scientist.
Postal Address:
Centre for the Management of Environmental Resources (CMER)
INSEAD
Boulevard de Constance,
77305 Fontainebleau Cedex,
France
Tel: 33 (0)1 60 72 4456
Fax: 33 (0)1 60 74 55 64
e-mail: [EMAIL PROTECTED]
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