Delta E 94 as new method to measure color variation
Delta E 94 as new method to measure color variation
- Subject: Delta E 94 as new method to measure color variation
- From: email@hidden
- Date: Tue, 05 Oct 2004 20:34:31 +0000
Can any one through some light on Delta E 94, a method to measure color variation. Presently I use the CIELAB for measuring color variation but of late I have been hearing Delta E 94 as a an ellipse-based equation for computing Delta E values as an alternative to the spherical regions of the CIELAB color space.Can some one in the group help as to its Pros Vs Cons
Rahul K
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> Today's Topics:
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> 1. Re: brightness slider (Martin Orpen)
> 2. Re: brightness slider (Martin Orpen)
> 3. PIA/GATF Color Management Conference (Rich Apollo)
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&!
gt; ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 05 Oct 2004 08:47:48 +0100
> From: Martin Orpen
> Subject: Re: brightness slider
> To: Colorsync Mailing List
> Message-ID:
> Content-Type: text/plain; charset="US-ASCII"
>
> on 4/10/04 7:52 pm, Neil Barstow at email@hidden wrote:
>
> > Hi Martin
> >
> > interesting script, could be very useful
> >
> > I guessed that < bValue > needed to be on the end of the line not on the
> > next line, as compiling failed if it was on the next line
> >
> > however, on my 10.3.5 system [PB1.25 connected to Apple 17 LCD]
> > once the Display's pane is open it returns:
> >
> > <<
> !
> System Events got an error: NSReceiverEvaluationScriptError: 4 &g
t;>
>
> The error is caused by you not having the "Enable access for assistive
> devices" checkbox ticked in System Preferences/Universal Access.
>
> It's one of the problems with UI (User Interface) scripting :-(
>
> I posted a reply with a "safer" script which warns users about this, but it
> exceeded the 12K message limit.
>
> I'll post the script on its own after this message - you'll see why I didn't
> post it the first time as the checks and warnings are 3x longer than the
> original script. The checking routine is from Bill Cheeseman's excellent
> Prefab UI Browser software.
>
> Regards
>
> --
> Martin Orpen
> Idea Digital Imaging Ltd -- The Image Specialists
> http://www.idea-digital.com
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 05 Oct 2004 08:4!
8:14 +0100
> From: Martin Orpen
> Subject: Re: brightness slider
> To: Colorsync Mailing List
> Message-ID:
> Content-Type: text/plain; charset="iso-8859-1"
>
> set bValue to 0.8
>
> tell application "System Preferences"
> activate
> set current pane to pane "com.apple.preference.displays"
> end tell
> tell application "System Events"
> if (system attribute "sysv") 4144 then
> if UI elements enabled then
> tell process "System Preferences"
> tell slider 1 of group 2 of tab group 1 of window 1 to set
> value to bValue
> end tell
> else
> beep
> display dialog "GUI Scripting is not enabled" & return & return
> & "Open System Preferences and check \"Enable access for assistive devices\"
> in the Univers!
al Access preference pane, then run this script again." with
>
icon stop
> if button returned of result is "OK" then
> tell application "System Preferences"
> activate
> set current pane to pane
> "com.apple.preference.universalaccess"
> end tell
> end if
> end if
> else
> beep
> display dialog "This computer can't run this script" & return &
> return & "The script uses Apple's GUI Scripting technology, which requires
> an upgrade to Mac OS X 10.3 \"Panther\" or newer." with icon caution buttons
> {"Quit"} default button "Quit"
> end if
> end tell
>
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> ------------------------------
>
> Message: 3
> Date: Tue, 5 Oct 2004 07:32:47 -0500
> From:!
Rich Apollo
> Subject: PIA/GATF Color Management Conference
> To: "ColorSync Users' List"
> Message-ID:
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> The PIA/GATF Color Management Conference schedule, registration, and
> pricing is now available.
>
> You can get to it here:
>
> http://www.gain.net/conference/brochure/index.cfm?ConferenceID=466
>
> or here
>
> www.colormanagementconference.com
>
> Rich Apollo
> Priority Litho
> 314-344-1144
> email@hidden
>
>
>
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> End of Colorsync-users
Digest, Vol 1, Issue 30
> **********************************************
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