Hello,
Hi Mauro,
The dE can be calculated from dL*, da* &
db* as it is the square root of the sum of the squares odd L*, da* &
db*. The formula below shows how.
Using
and
, two colors in L*a*b*:
You can also use your own program DeltE:
http://www.adobe.com/cfusion/marketplace/index.cfm?event=marketplace.offering&marketplaceid=1&offeringid=10244
SCNR ;-)
MfG
Thomas Richard