Re: Real world experience w/ GMG and Oris RIPs
Re: Real world experience w/ GMG and Oris RIPs
- Subject: Re: Real world experience w/ GMG and Oris RIPs
- From: Graeme Gill <email@hidden>
- Date: Sun, 28 Nov 2004 23:07:33 +1100
- Organization: Color Technology Solutions Pty. Ltd.
Roger Breton wrote:
Have you ever investigated how much of a spread does interpolation by the
CMM fares compared to building extra nodes into the B2A table? I suspect
there is a point of diminishing return where, beyond a certain number of
nodes, there isn't anything to be gained in actual extra precision in the
results.
I've not really investigated the effects on the forward table in any detail. The
impression I get is that it reduces the "sharp edges" of the (typical) linear
interpolation, but often leads to "bumpier" profiles due to more faithfully
following noise in the measurement samples, or less accurately guessing the device
response between measurement samples. Modifying the interpolation algorithm
may change the nature of this sort of tradeoff (ie. by introducing more of a
filtering effect at higher resolutions.)
Increased resolution in the reverse table often reduces inversion inaccuracy,
particularly at the very edges of the gamut. The main limitation seems to
be profile size and processing time.
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden