Re: Colorsync-users Digest, Vol 9, Issue 8
Re: Colorsync-users Digest, Vol 9, Issue 8
- Subject: Re: Colorsync-users Digest, Vol 9, Issue 8
- From: Jeff Cunningham <email@hidden>
- Date: Wed, 18 Jan 2012 08:08:24 -0500
Excel spreadsheet and code snippets available here:
http://www.cis.rit.edu/mcsl/online/cie.php
Jeff
On Jan 17, 2012, at 3:03 PM, email@hidden wrote:
> Date: Tue, 17 Jan 2012 18:50:00 +0000
> From: Martin Orpen <email@hidden>
> Subject: Re: DeltaE Calculator
> To: "'colorsync-users?lists.apple.com' List"
> <email@hidden>
> Message-ID: <email@hidden>
> Content-Type: text/plain; charset=us-ascii
>
> On 17 Jan 2012, at 18:25, A Sanna wrote:
>
>> Is there a calculator or utility out there that could generate the DeltaE between two entered Lab values?
>
>
> Applescript? Something along the lines of:
>
> set {L1, a1, b1} to {47.79, 73.73, -2.93}
> set {L2, a2, b2} to {48.41, 75.54, -3.88}
>
> set dE to (((L2 - L1) ^ 2) + ((a2 - a1) ^ 2) + ((b2 - b1) ^ 2)) ^ 0.5
> set dE to (dE * 100 as integer) / 100
>
> --> 2.14
>
>
> It'd only take a couple of minutes to add an interface in Xcode -- although using a spreadsheet app might be even easier.
>
> --
> Martin Orpen
> Idea Digital Imaging Ltd
>
> ------------------------------
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