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From: Tom Stiller <clusterfux.upmon@gmail.com>
Newsgroups: comp.sys.mac.system
Subject: Re: Any quick, easy way to compare two images?
Date: 23 Jan 2014 21:11:52 GMT
Organization: Old Men With Beards
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References: <lbrnpr$q5o$1@dont-email.me> <230120141424174937%nospam@nospam.invalid> <lbrvrh$7ua$1@dont-email.me>
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On 2014-01-23, Don Bruder <dakidd@sonic.net> wrote:
> In article <230120141424174937%nospam@nospam.invalid>,
>  nospam <nospam@nospam.invalid> wrote:
>
> If I have to look at the pixels, I expect something as simple as ANDing
> them together and calling it "new" if I get back a not-the-same value
> from the operation should do the trick.
>
I'd use XOR and look for a non-zero result to indicate "new".